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  »  New  The best audio source EVER!..  Norway to close FM by 2017...  Off Air Audio Forum     34  192521  08-20-2005
  »  New  Where the FM quality comes from?..  Freaking ridicules…...  Off Air Audio Forum     22  128273  11-02-2005
  »  New  Sansui TU-X1 Broadcast monitor...  Replace all audio coupling......  Off Air Audio Forum     46  328239  06-20-2007
  »  New  The high-end audio, as it should be...  My prediction about it in 2020....  Off Air Audio Forum     3  32689  03-15-2008
  »  New  Kenwood L-02T and the hype of FM tuners..  Good reception...inferior Sound...  Off Air Audio Forum     2  48674  04-25-2008
  »  New  Rohde & Schwarz EU-6201 Tuner..  The Schwarz runs from crystal oscillator!...  Off Air Audio Forum     34  248720  05-07-2008
  »  New  How many Bits needed for FM, the Accuphase T1000 dilemm..  The Spider in the Bromeliad...  Off Air Audio Forum     6  47927  03-11-2009
10-08-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 21
Post ID: 11927
Reply to: 7054
The new BW Broadcast tuner.
fiogf49gjkf0d

A visitor sent me information that British company BW Broadcast 

http://www.bwbroadcast.com

…released this month a new tuner.

http://www.broadcastequipmentguide.com/BW-Broadcast_09_03_09.php

http://www.goodsoundclub.com/PDF/RX1.pdf

Hey, European folks, can you sniff out what it and perhaps to try it? Will this thigh thing to have a digital output?

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
10-09-2009 Post does not mapped to Knowledge Tree
mjloudspeaker
Posts 40
Joined on 08-07-2009

Post #: 22
Post ID: 11935
Reply to: 11927
High end club for $50.00 bucks possibility! What is wrong with this?
fiogf49gjkf0d
 Romy the Cat wrote:

A visitor sent me information that British company BW Broadcast 

http://www.bwbroadcast.com

…released this month a new tuner.

http://www.broadcastequipmentguide.com/BW-Broadcast_09_03_09.php

http://www.goodsoundclub.com/PDF/RX1.pdf

Hey, European folks, can you sniff out what it and perhaps to try it? Will this thigh thing to have a digital output?

The Cat

Hi Romy this is from their site. 

  • Adjustments are provided for over 50 parameters, including audio bandwidth, IF bandwidth, de-emphasis, stereo, HF and ultrasonic noise blending, and blending attack/release times. All adjustments, plus factory presets and user-stored settings, can be accessed via Ethernet and serial connections.

    “We love listening to analogue FM,” said BW’s president Scott Incz, but we could not find an FM tuner to match the performance of our transmitters. So we designed it! The great looking OLED and Cap-touch front panel interface of the models includes comprehensive metering plus a headphone jack.”

    For retransmission applications, the RBRX1 version adds DSP-enhanced MPX output that reconstructs a clean, peak-level and bandwidth limited waveform, eliminating worries about studio-transmitter link overshoots. RDS PI code checking prevents translators and repeaters from being hijacked or jammed.

    Plan B silence detection technology automatically switches from to either of the analogue and AES/EBU digital inputs, or to the built-in flash memory to keep broadcasting in the event of reception loss.

Reminds me of communication receivers in my day, completely obsolete now and even 20 years ago, except for the romantic and nostalgic fan.

I say I can do better for $50 dollars with this device, tested by me, and it will wake you up in the morning with built in alarm capabilities.

High end is where you find it! 

I have 2 of these now, seriously! Maybe not for you Romy, but I like simple things now. because I had high end tuners that died, I am not in love with this any longer, prefer asian girl with big bosom and friendly personality.

I LIKE DEGEN RADIO. 1.8 inch jack into class d amp capability. wow.

degenradio.jpeg

06-02-2010 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 23
Post ID: 13679
Reply to: 7054
New Bel Canto Design FM1 Tuner
fiogf49gjkf0d

From: http://www.belcantodesign.com/pdfs/bc_ces10_source_web.pdf

24-bit/48kHz Digital Outputs • Patented Digital IF Analog Tuner Front End

A tuner’s delight! The FM1 features patented analog FM receiver architecture, delivering superior RF performance and rejecting interference with digital IF processing. The FM1 includes advanced seek algorithms, adjustable soft mute, stereo blend, auto-calibrated digital tuning, and FM stereo processing. Digital processing allows precise pilot rejection, selectivity, and unmatched audio quality. The advanced digital IF section operates at 24-bits and 48Ks/s data rate. Run the digital output into your favorite Bel Canto DAC or choose the FM1’s analog outputs derived from our High Dynamic Range Bel Canto DAC architecture.

The FM1 also incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS) for station identification and performance information displayed on the 8-digit alphanumeric display. The FM1 delivers unprecedented functionality and performance in a compact, easy to use package. It’s a perfect system companion for a Bel Canto DAC Control Center or preamp-based system.

Features :

Internal DAC with 122dB dynamic range
24-bit/48kHz digital output
High dynamic range 24/192 DAC analog section
RDS/RBDS Function
8-digit alphanumeric green LED display
10 station preselects and Remote control
Green, eco-friendly, low-heat, low noise, low power consumption

Also, information is available at:

http://www.belcantodesign.com.au/index.php/sources/fm1

I do not see any”unprecedented functionality” in this description. Apparently the marketing idiot who wrote it was… an idiot, which would not be difficult to guess. The digital IF section that runs at 48K - interesting… I guess then have digital stereo decoder as well.

The tuner outputs 24-bit/48kHz, that is better then foolish 16-bit/48kHz from Accuphase.

I am not a bit fun of Bel Canto Company but who knows – might be they did a good tuner, you never know. I really would like to have more information about the front end, the sensitivity numbers, IF window and so on but I presume it would be too much to ask.

Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
07-12-2010 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 24
Post ID: 13977
Reply to: 11927
Our DSP FM Tuners
fiogf49gjkf0d
 Romy the Cat wrote:

A visitor sent me information that British company BW Broadcast 

http://www.bwbroadcast.com

…released this month a new tuner.

http://www.broadcastequipmentguide.com/BW-Broadcast_09_03_09.php

http://www.goodsoundclub.com/PDF/RX1.pdf

Hey, European folks, can you sniff out what it and perhaps to try it? Will this thigh thing to have a digital output?

The Cat


Hi Romy,

I know your original post is a little old but wanted to reply to your question.  Yes, the tuner has digital (AES/EBU) and analogue outputs.  Please PM me your address if you would like me to post you a copy of our latest corporate brochure - this extends to any forum members.

The receiver is currently in beta testing - out with customers around the world for final field tests.  Things are going well and it's turning out to be a very exiting product for us.

I'll take the chance to add the RBRX1 adds loads of cool features like an RDS encoder, PI code checking, full scheduling and silence detection for those wanting to use it as a fully featured re-broadcast receiver.

If anyone has any technical questions please feel free to ask here or email me personally at dave@bwbroadcast.com.

Thanks,
Dave
07-15-2010 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 25
Post ID: 13994
Reply to: 13977
Where/when?
fiogf49gjkf0d
Thanks, Dave

What kind front-end your tuner has? Any further information about the tuner further topology? Availability? Price? Any information about the A/D processor you have in it?  The most important, where/when is possible to see it in the field to get idea about it sensitivity, selectivity and sound?

Rgs, Romy


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
07-16-2010 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 26
Post ID: 13999
Reply to: 13994
More Info
fiogf49gjkf0d
Thanks, Dave

What kind front-end your tuner has?Romy, probably best I point you to a datasheet as it contains more information than I could fit in my reply Big Smile
http://www.nxp.com/documents/data_sheet/TEF6730A.pdf

Any further information about the tuner further topology?
The output of the TEF6730 is fed into A/D converter circuitry.  From there all filtering and demodulation is performed in DSP.  This allows us to statically and dynamically control the RF and audio performance that makes this tuner so versatile.

Availability?
Would you be interested in a beta model?  Stock is very limited so I can't promise anything at this stage but let me know and I'll see what I can do.  Please also provide me with your contact details and I will get in touch when they are available for general sale shortly.

Price?
As mentioned there are two versions of our new tuner, the RX1 and RBRX1:
 
RX1 - USD $1345 (List Price)

Unprecedented RF and audio performance as well as access to typically hidden RF and audio settings makes this a very capable receiver.  With adjustment of over 50 parameters (including audio and IF bandwidths, de-emphasis and blending for stereo, HF and ultrasonic noise) the tuner can be perfectly adjusted for optimum listening experience.

RBRX1 - USD $1995 (List Price)
Adding to the extensive features list of the RX1 the RBRX1 has MPX regeneration, PI code checking and silence detection to ensure the rebroadcast of an FM transmission.  The built in RDS generator and scheduling capability turn a high performance receiver into a very versatile rebroadcasting tool.

Any information about the A/D processor you have in it?

Please can you elaborate on this question to allow me to better answer it?

The most important, where/when is possible to see it in the field to get idea about it sensitivity, selectivity and sound?
Our receivers come into their own when faced with less-than-ideal reception.  This was core to their design as a good re-broadcast receiver has to be great at receiving weak signals when faced with high power transmissions in close proximity.  All of the parameters available allow you to tune the receiver very finely for best reception - or an auto mode works out the best settings if the user is less technically inclined.  We are exhibiting at IBC Amsterdam this September and will have units on display, and we will also be at NAB 2011 in Las Vegas but that is not until next April.

Let me know where you are and I'll get more information for you.

Please let me know if you have any more questions Smile

Kind Regards,
Dave
07-17-2010 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 27
Post ID: 14005
Reply to: 13999
2010 vs. 1970?
fiogf49gjkf0d
Thanks, David.

I consulted with my technical recourses and they do not know the chip you use in the front end. It is very hard to predict how this solution will work in a real live. I presume that a discreet analog front end is more powerful then this "on-board digital frequency synthesizer” but it need to be aligned and… it was 40 years back. Who knows - might be those chips are able to do something good, perhaps not in sensitively department I am sure that you compare your tuner with better along tuners. About the A/D processor, I was wondering what chip you use and at what sapling rate you do you DSP processing?

About Beta. I do not know. I do not need another tuner - do not collect then but use them. I have two tuners that I use -a few times per week recording of live broadcasts.  I might get another tuner but ONLY if it would hammer my current tuners: reception-wise of sound-wise. I use Sansui TU-1X with modified output stage for attendance use and Rohde & Schwarz EU-6201 broadcast relay with wide-band output into Rohde & Schwarz modified multiplex decoder.  They both are purely analog SS machines with no DSP of any kind. If you tuner will push any of them further sonically then it might be interesting.  Reception-wise it is always there is a room for improvement.  Whatever it might be I would prefer to get a wide at least 450K band of IM and do not gain noise ratio by losing side band. It might be interesting what re- broadcast relay of 2010 will be able to do with broadcast relay of 1970 (Rohde & Schwarz). If you would like to make this experiment then we could arrange something… I am in Boston, US’ New England.

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
08-04-2010 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 28
Post ID: 14180
Reply to: 14005
Info On Its Way
fiogf49gjkf0d
Hi Romy,

I have just returned to the office after a summer holiday and seen your reply.

I'll have answers to your questions shortly.

Regards,
Dave
08-05-2010 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 29
Post ID: 14185
Reply to: 14180
Test Unit?
fiogf49gjkf0d
Hi Romy,

The development team like to be a little secretive when it comes to the nitty gritty of the design of the tuner.  A lot of it is proprietary and follows from extensive R'nD time and cost.

I think these best way to test it's performance is for you to try one in person against your other tuners.

I will send you an email about this.
Kind Regards,
Dave
10-25-2010 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 30
Post ID: 14781
Reply to: 7054
The new Accuphase T1100
fiogf49gjkf0d

A reader of my site sent me interesting information. It looks like Accuphase came up with a new model: T1100.

http://www.accuphase.com/cat/t-1100_e.pdf

In this new model more functionality went to DSP, but the most important the output become not 16 bit as in T1000 but 24 bit. I guess the Accuphase people read my site and felt shamed for the fact that the previous T1000 output 16 bit.

http://www.romythecat.com/Forums/ShowPost.aspx?postID=9988#9988

Now, there are two questions about the new Accuphase tuner.

The first one: Why the former model with similar DSP multiplexer output 16 bit? The possessing is done at 192K and the ¼ of the output, the 48K, is perfectly understandable. With bit resolution it is more complicated. The initial depth is 24 bit and there is a LOT of DSP on board of T1100. The DSP eats bits depth, you want it or not but it is. This is a reasoned why some DSP gear run internal 32 bit. So, would it be possible that the former Accuphase T1000 run 24 bit and output the honest 16 bit left from DSP processing nut the new unit juts adds  extra 8 bogus bits over the 16 bit signs to keel the people like me, who want to see 24 bit,  to be “happy”? I do not think anybody will answer the question until a user with brain and true interest would test it.

The second question: how the hell the US person who has an interest in this tuner can approach it. I have contacted an Accuphase dealer that I know and he told me that it is not problem to get it. But the problem is not to get it but to be able to learn if it worth to get it. The definition of “worth” for me is to learn how the reception specifics and sonic character of this new tuner (on digital and analog outputs) relates to the identical performing aspects of the best analog tuners that I already have. No one would tell it besides me, so I need to hear the thing before I buy.

Some of the Accuphase T1100 functionally are impressive but absolutely irrelevant to my need. The 6 ranges of IF bandwidth is a joke, I am sure I would need just 500Hz and I would like it to have the best reception without narrowing the IF bandwidth. The tuner has 60dB of stereo separation. This is phenomenal number but it is done by stages crosstalk cancelation circuits, or by active back-phase insertion. BTW, Sansui has 55db of separation and Rohde & Schwarz I personally measured 65dB   (all on analog level!!!). Still the numbers have little relevance as they are crosstalk WAY higher than any FM station able to output. The relevance is HOW the sound was affected while those numbers were archived. I am not saying that Accuphase crosstalk cancelation is bad idea. It might be anything – from absolutely perfect performance to a complete distraction of Sound. Unfortunately no one will tell it.

The dealers obviously would not know how anything about new Accuphase sounds nether in relative terms to other tuners nor in absolute terms of own Sound.  The US Accuphase distributer with whom I spoke last time when I was interested in T1000 model is also very clueless and I do not think he ever used FM. So, what I would like to do is to announce my agreement to perform an act a human kindness toward to Accuphase, sort of commit my audio mitzvah, and agree to examine the T1100’s Sound. If somebody gets me T1100 tuner, along with $20.000K check from Accuphase, then I will return the tuner in approximately 3 months along with a well-written 3000 words of analyses about the Accuphase T1100 performance, accompanied with my permission to Accuphase to use my analyses in a whole, non-edited format, at their digression.

Rgs, Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
12-03-2010 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 31
Post ID: 15053
Reply to: 14185
The RBRX1 tuners are in US.
fiogf49gjkf0d

 Dave_at_BW_Broadcast wrote:
The development team like to be a little secretive when it comes to the nitty gritty of the design of the tuner.  A lot of it is proprietary and follows from extensive R'nD time and cost.

I think these best way to test it's performance is for you to try one in person against your other tuners.


The folks from BW Broadcast just sent me an email informing that the RBRX1 receivers are available in US via their distributer. 

SCMS Inc, Doug Tharp
Phone:    +1 (866) 673 9267
E-mail: dougt@scmsinc.com
Website: www.scmsinc.com

It looks like BW Broadcast does fine, they shoe up at a few shows, pick up some sales reps. They send me in a past a feedback from some rebroadcasting station that used RBRX1 and liked it. Good for them….

 They threaten me to send me a test unit to assess sonic and reception qualities of the RBRX1. It never materialized. Apparently they gained sales momentum faster then they lost interests about the Sound of this tuner. Well, it is what it is.

Whatever it worse, if somebody are interested then the RBRX1 tuner is available in US at the link above.

The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
03-07-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 32
Post ID: 15711
Reply to: 14781
Some comment about Accuphase T-1100
fiogf49gjkf0d

A site reader sent me last nigh a link to a Yahoo newsgroup where a guy posted at feedback about Accuphase T-1100

http://tech.groups.yahoo.com/group/FMtuners/message/66682

Here is the  content of the newsgroup post:

David "Anonymous" responds

Paul - It worked! David "A"'s reply is below. -Eric

"Hi Eric,

It was nice to hear that people still enjoy/value some of my thoughts about
tuners. It was an interesting voyage from 2 tuners to 67 and back down to a
more manageable 5 that I plan to die with ;-)

I did crawl out from under my "tuner retirement" rock to look at,
listen to and enjoy what I believe is the new king of tuners. Here are my
thoughts...

I am just back from 2011 CES in Las Vegas. Some great new
components have been unveiled or further improved. It is possible to build a
system that was unimaginable just a few years ago. From speakers like the
breathtaking MBL101Xtreme and 101E/2, to more conventional speakers like the
Magico V3 and V2, there are speakers breaking new ground on the sonic excellence
front independent of your listening preferences. In the area of preamps and
amps, things are perhaps even better with units like the unbelievably complex
Soulution 700/710/720 to the simpler, but no less spectacular, Spectral
DMC-15SS, Spectral DMC30SS, DMA360S2, and DMA260. Exceptional CD players, DACs
and/or music servers from Boulder (1021) MSB (CD IV and DACs), Resolution
(Cantata) and others keep the digital arena very interesting. Turntables,
Cartridges and other components have been joined by truly superb new components.
So as I asked during my last voyage out of "the tuner retirement village", where
does that leave the FM Stereo enthusiast? As I said before, HDFM, Internet/4G
radio, Sirius and XM are all still challenges to traditional FM Stereo.
Personally, I hope that FM Stereo fights a long fight and eventually finds a
resurgence much akin to what happened with vinyl as many rediscovered what a
great record could sound like on a top drawer turntable and tonearm with a MC
cartridge.

I have helped to build systems for myself, and others, that resolve
differences that I could not appreciate a couple of years ago. While components
like those listed above are impressive, so too are advancements in affordable
headphone-based audio for those with more modest budgets. Plug your favorite
tuner (or CD player) into a Schiit Asgard headphone amp (yes that really is
their name, they are really nice people who design great gear, but have a sense
of humor that is refreshing in the audio business) and select the 250 ohm Beyer
DT-880 Pro version headphone or the AKG K701 (if you are more of a midrange
junky) and be prepared to hear things that you didn't used to be able to hear at
any sane price. If you use the web to buy the phones and the amp, they will set
you back about $500 plus shipping, and I defy someone to find better sound for
the money. I did the only rational thing, I bought several of each!

So while prowling the Las Vegas Convention Center (The Zoo for show
veterans), the Venetian, and assorted other venues, what news for the dedicated
FM Stereo fan? Well, thankfully in spite of Pioneer, Kenwood, and many other
once great brands nearly or completely disappearing from the audio scene,
Accuphase is back with a new super tuner (the T-1100) for the bleeding edge of
FM Stereo. Accuphase may have read my review of the T-1000 because a
significant part of the improvement comes in the IF department. However, the
already amazing performance of the stereo decoder was also improved and not just
by a little. Try 60+ dB separation from 20 Hz to 15 kHz and nearly 80 dB at its
maximum. I am quite certain that this is substantially better than most
stations and better than any tuner that I have ever seen or measured! In fact,
it is nearly a 20 dB improvement at the top end and sounds that way on great
stations.

I find that the new T-1100 tuner is more attractive (at least to my
sensibilities) by placing the display on top and controls underneath making it
appear more balanced. It still has the massive champagne-gold colored, aluminum
faceplate and spectacular Accuphase build quality. Is it worth the substantial
increase in price? Well it depends on you, the stations that you have access
to, and the depth of your wallet for audio toys. Given the shift in the value
of the dollar to the yen, the performance, and the quality of construction, the
$6,500 price that I was told about at CES does not seem totally out of line.
However, one must realize that we are way, and I mean WAY, up the diminishing
returns curve here! We are talking about an assault by some excellent engineers
at the limits of what is possible in an FM Stereo tuner. A quick look at the
guts shows more than a few design, parts and layout changes. Power supplies
have been improved, more DSP wizardry is obvious, and every technical
specification of the prior T-1000 was maintained and some improved dramatically.
I did not have time to analyze the circuit in detail. Such an effort may have
been frustrating if I tried because of the amount of processing going on inside
the TI and AD DSPs and other VLSI devices.

So for you hard core RF guys, is this the "end all" tuner for
downtown multipath or extreme fringe areas? Well I am not sure is the honest
answer. Since I only had the tuner in two locations with two antennas, all I
can say that selectivity is definitely improved with six Finite Impulse
Response, DSP implemented, Digital IF Filter, bandwidths of 50 kHz, 75, 100,
150, 250 and 500 kHz. It performed flawlessly in both locations and with both
antennas that I was able to use it with. So unlike the T-1000 where even in my
location I could see that the old RF greats still had an edge for tough
reception problems, they didn't have the same edge against the T-1100. Will
this hold true for downtown NYC, or 200 miles from a station with a huge array
antenna on a rotor? Well one answer is I hope so, but perhaps someone in one
or both of those types of locations can report in and let us know.

For the sound quality junkies, this tuner further adds to
Accuphase's considerable reputation by once again pushing back the limits of
what I thought was possible. They maintained both single-ended and balanced
analog outputs, added a nice polarity switch capability for the balanced
outputs, and thankfully maintained the ability to output the digital stream into
a reference-grade external DAC. I continue to believe that reference-grade
outboard DACs are still the way to go rather than using the internal DACs. The
sound, which was spooky clear before in the T-1000, had even more authority on
the bottom and in terms of dynamics, while maintaining the delicacy and imaging
that so astounded me in the T-1000. The separation appeared to me to further
improve sound staging compared with the T-1000. Meanwhile, the noise floor
appears to be even quieter. I would guess that this is likely as a result of
being able to balance audio and RF performance in the IF and further abating
stereo decoder artifacts. The T-1100 is simply in every audio parameter the
best sounding tuner that I have heard by a large margin. Listening to a great
station, on headphones, at significant volume, the quieting of this tuner when
there is no content is really pretty amazing. Using a good headphone set-up
also reveals important sonic cues that are not always apparent in speaker/room
based systems even if the system is really exceptional. This tuner also has
better attack and decay of notes and proper harmonic structure than any other
than I have heard. You think a Kenwood or a Sansui can do violins? Then you
better listen to this tuner! If the violins don't sound spooky real, then it is
probably a bad recording and/or playback system at the station. If you have a
really great classical station, then you are in for a treat. The sound quality
is what one friend described as "otherworldly". What's more, given the parts
and the amount of work being done with Digital Signal Processing, I imagine that
this tuner will hold its performance longer than many, if not all, of the old
greats.

So for those who already own the T-1000, should they sell their
tuner and trade up or just outright buy a T-1100? Well again that depends on
you, your wallet, and the stations/reception situation that you are in. If you
have the money, love FM Stereo, and have enough great stations within reception
range to make the investment worthwhile, my answer would be an overwhelming
ABSOLUTELY! However, at this price range, while not unreasonable given currency
fluctuations as I said above, the user is within reason to expect the best tuner
ever made for their situation. If you live in an extreme fringe or deep urban
area, I would recommend borrowing one from a dealer, to determine whether it is
state of the art in your location. I strongly encourage you to do so if you are
REALLY serious about FM. I have already told several friends with deep pockets
and/or large tuner collections that they should tee up, or at least sell part of
their aging collection to get a T-1100. Should people with a stack of L-02T,
TU-X1, CT-7000, et al tuners get one? They must if they want to say that they
have all of the greatest tuners of all time. Going back to the T-109 and the
T-109V, is illustrative of the level of improvement for these last two great
Accuphase tuners. While the T-109 and the T-109V are both excellent tuners,
they pale in comparison to the sound of the T-1100 when listened to into a great
DAC. I know some enthusiasts who have bought a LOT of tuners, Really Large
Collections, and now have an Accuphase T-1100 or T-1000 paired with a Kenwood
L-02T or a TU-X1 and NO other tuners. They are also very happy with what they
hear.

As another listener so poignantly stated, "Imagine if we had this
tuner back in the 1970s when there were so many great stations!"...

Whether you are personally an Accuphase fan or not, tuner
enthusiasts owe this firm a debt of gratitude because they are nearly the only
company left who has displayed any interest in furthering the format. Most of
the so called separate tuners are the same cheap junk put into most current
surround receivers with a separate box and supply. Accuphase has invested some
real time and money here and I wish them success with this tuner.

That's it folks, the old King is dead, long live the new King!

Best regards,
David"

I give to this post a publicity of my site as there is not a lot of told about Accuphase T-1100, in fact with current state of economy and FM generally they would sell one unit per hear in US. At least when I contacted US rep year back and inquired about new at that time Accuphase T-1000 he gave me that volume.

So, the guy looks like got T-1100 and it looks like he likes it. That is a good sign but it is hardly a motivation or reference of any kind for me. The fact the a person elegantly express his opinion about tuner and use right keyword in right places is not necessary that he use right reference points in his judgments. In fact some of his comments made me feel that his reference points are not where I would like them to be. His admiration of Magico loudspeakers and Spectral electronics is kind of conspicuous. His comment that a headphone reveals more important sonic cues then speaker is in indication that he is not familiar with serious loudspeakers. He treats Kenwood L-02T and Sansui TU-X1 as they are tuners of the same sonic caliber. There are a few more things that make me not comfortable. The most important is he is trying “strongly encourage” somebody in something. It turns me off instantaneously as I do not like anything expressed in audio for “sake of others”. Talk about yourself, no one need your recommendation; Morons need it and if you are target Morons then you are target Morons.

Unquestionably the new T-1100 is an interesting tuner. I like the Dave comments about noise but he failed to mention with witch IF. The IF bandwidths in  T-1100  is 50k, 75k, 100k, 150k, 250k and 500k. The noise floor of tuners has to be compared with identical IF bandwidths, if 150k on T-1100 sounds less noisy then 550K on Rohde & Schwarz then it is the way how it shall be. The sonic quality degradation with IF bandwidths narrowing looks like left behind the picture in all those comments.  The presence of digital out is a great feature but do they output a full 24 bit 48K signal? This is not clear and usually companies would not do it. Also, if the internal Accuphase DAC is compromised as Dave implies then what does it say about the rest Accuphase DSP? Something is fishy… The internal DAC is hard-wired to Accuphase, ruining from the same clock, why would it be bad? Anyhow, sure the new T-1100 needs to be heart and I am sure pretty much sure no one will have a chance.

I do not mind to come up with 6K for a tuner that that deliver better results then what I have but I did not see Dave appoint specific sonic problems with the tuners I know and present a description how a new T-1100 address those problems. That would be something that attracts my attention, other it is just internet chatter. If one goes to Macintosh or Day-Sequerra, or Marantz forum then you will see a lot of people who claim that something is best, the actual Sound that they have in this listening room is an indication that they operate light miles away from “the best” that even this tuner can do. I have made a mistake and bought in my past the “best ever” Kenwood L-02T that turner out to be very mediocre sounding and the “best ever” REL President that time out to be hardly usable in comparing. I do not use the FM wisdom of others as my orienteer. I do appreciate David for expressing his views but I did not get any motivation from it.

Romy The Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
06-05-2011 Post does not mapped to Knowledge Tree
mats
Chicago
Posts 76
Joined on 09-18-2005

Post #: 33
Post ID: 16400
Reply to: 15053
RBRX1 impressions
fiogf49gjkf0d
Inspired in part by Romy's  results and excitement with FM, I wanted to try.
Restricted by apartment living, I had difficulties achieving a quiet stereo signal.
I was also concerned about the a/d conversion for digital recording.


Having used the BW Broadcasting RBRX1 tuner for about 6 weeks now ,
I would like to share a few thoughts.  It is a complex device with many settings:
"Adjustments are provided for over 50 parameters, including audio and IF bandwidths,
de-emphasis, and  blending for stereo,HF and ultrasonic noise."


http://www.fm-receiver.com/rbrx1.php?productarea=Manual


I have been able to use it pretty much wide open, with minimal blend, and it is 
seemingly immune to the noise from various digital equipment that surrounds it.
Right away this is a huge victory, since I had yet to achieve a quality low noise signal before.
(Revox, Yamaha and Micro CPU.) 


 As I write this, WFMT is playing The Planets,  Sir 
Andrew Davis conducting the BBC Phil, and it is rather amazing.
Complex passages resolved as I would expect were I using my Goldmund transport.
I prefer the digital out, 24/48 is the maximum currently, and I believe that
my Lavry DA-11 dac is the factor of sonic character.  
It appears that the tuner responds to whatever it is being fed.  
I can find no limitation from the RBRX1.
The ULF  right now is just phenomenal thru my tapped horn.
It is very exciting to listen to.  I can't describe any sound,
except it does have some of that "FM-magic".  


Of course it must be noted that I have not compared the RBRX1 to Super-Sansui's  or alike.  
I will also admit that Romy's best shared samples
are better than what I listened to today.  Perhaps not by that much though.
Hopefully someone will be able to do a direct comparison.
Meanwhile I am delighted, and have a new favorite source.
06-06-2011 Post does not mapped to Knowledge Tree
scooter
Posts 161
Joined on 07-17-2008

Post #: 34
Post ID: 16401
Reply to: 16400
Why the RBRx1 vs Rx1 for home use?
fiogf49gjkf0d
Why the RBRx1 vs Rx1 for home use? What are your complaints about the RBRx1 (e.g. what would you change)?
06-06-2011 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 35
Post ID: 16402
Reply to: 16400
Thanks for the Feedback
fiogf49gjkf0d
Thank you mats for taking the time to post your experiences of the RBRX1.
Please let me know if you ever need any assistance configuring the reciever for optimum reception.  If you signup to our FM reciever user list you will get email notifications of software updates (an interesting one coming soon adding even more features):

Click here to subscribe!

Kind Regards,
Dave
06-06-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 36
Post ID: 16403
Reply to: 16400
The time foe RBRX1 still is coming.
fiogf49gjkf0d

 mats wrote:
Inspired in part by Romy's  results and excitement with FM, I wanted to try.
Restricted by apartment living, I had difficulties achieving a quiet stereo signal.
I was also concerned about the a/d conversion for digital recording.


Having used the BW Broadcasting RBRX1 tuner for about 6 weeks now ,
I would like to share a few thoughts.  It is a complex device with many settings:
"Adjustments are provided for over 50 parameters, including audio and IF bandwidths,
de-emphasis, and  blending for stereo,HF and ultrasonic noise."

http://www.fm-receiver.com/rbrx1.php?productarea=Manual

I have been able to use it pretty much wide open, with minimal blend, and it is
seemingly immune to the noise from various digital equipment that surrounds it.
Right away this is a huge victory, since I had yet to achieve a quality low noise signal before.
(Revox, Yamaha and Micro CPU.)


 As I write this, WFMT is playing The Planets,  Sir
Andrew Davis conducting the BBC Phil, and it is rather amazing.
Complex passages resolved as I would expect were I using my Goldmund transport.
I prefer the digital out, 24/48 is the maximum currently, and I believe that
my Lavry DA-11 dac is the factor of sonic character. 
It appears that the tuner responds to whatever it is being fed. 
I can find no limitation from the RBRX1.
The ULF  right now is just phenomenal thru my tapped horn.
It is very exciting to listen to.  I can't describe any sound,
except it does have some of that "FM-magic". 


Of course it must be noted that I have not compared the RBRX1 to Super-Sansui's  or alike. 
I will also admit that Romy's best shared samples
are better than what I listened to today.  Perhaps not by that much though.
Hopefully someone will be able to do a direct comparison.
Meanwhile I am delighted, and have a new favorite source.

Interesting, mats.

The unit is not “complex device with many settings”. All those settings have own meaning and if you know how a tuner works then there is absolutely nothing menacing in those adjustments. You went for RBRX1? I wonder why? I think RX1 has all set of futures that necessary for people like you and RBRX1 is more for relaying applications. Were you attracted by RBRX1’s ability to be used as a standalone DAC? BTW, how good that DAC when is used from external digital source, your Goldmund transport for instance?

Regarding the tuner. I never had it and I do not know what to expect. David was threading me that I will get one to test but it never materialized. Perhaps you mats will be traveling to Boston and you would bring your RBRX1 in? Then we will be able to see how RBRX1 stands.

There are a few things that I am very interested. They keep talking about the adjustable bandwidth but they never published the bandwidth of the window. I have plenty of good tuners that can do from 100KHz to 650kHz. What I would be interested is to see how RBRX1 will perform again other tuner with good selectivity at the SAME IF bandwidth. It is not difficult to get a good reception by narrowing the IF window. The problem is that with narrowing intermediate frequency we truncate the side band and losing a lot of audio quality, not to saying the stereo quality. With the way how the stations are seeded in US FM dial I think the 500kH is more or less optimal IM bandwidth, at least in Boston where we have each 0.2-04Meg a deferent station.

Another thing is the quality of that digital multiplex decoder. There are no modulations in decoder any more but pure sound. How all of it DSP processing affect sound no one know. At this matter we do not even know how many bits that 48K out has. I hope it has 24 but they do not say…. I would rather to have them to run A/D not 24/192 but 32/352. They then would be able to output 88K and have highest bits that can be eaten by DSP.

Of cause it is all literature and the quality of sound altogether is something that interests me. All those “over 50 parameters” (or better to say some of them) are relevant to set the tuner in optimism receiving condition for a given signal. Then there is the actual quality of sound that tuner is potent to show.  This variable is not known to me so far. I have seen online audiophiles were trying to compare RBRX1 to different tuners and found that MR-78 was more preferable.  That is funny as I do not consider the MR-78 worth any attrition, it is not to mention that audiophiles are generally understand Sound as much as Sarah Palin understand multiplication table….

It would be also interesting to run RBRX1 into external DAC and to see if you will be able to get better result. I do not know what kind digital signal they output. Most like it is Mono right after decoder with 19kH defeated. Anyhow, you can compare it with your Lavvy and get some idea about the quality of RBRX1’s output stage.

Rgs, Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
06-06-2011 Post does not mapped to Knowledge Tree
mats
Chicago
Posts 76
Joined on 09-18-2005

Post #: 37
Post ID: 16404
Reply to: 16401
RBRX1 vs RB1
fiogf49gjkf0d
 scooter wrote:
Why the RBRx1 vs Rx1 for home use? What are your complaints about the RBRx1 (e.g. what would you change)?

Scooter, I have never heard the RX1.  For my purposes it would likely have been perfect.  So, aside from some poorly thought out notions of in home re-broadcasting, and the hope that the RBRX1 may have maximized signal shielding, I have no reasons to have chosen the more expensive unit.  

I do appreciate BW Broadcasting's responsiveness to inquiry, and seeming ongoing interest in optimizing the performance of their product.

Mats
06-06-2011 Post does not mapped to Knowledge Tree
mats
Chicago
Posts 76
Joined on 09-18-2005

Post #: 38
Post ID: 16405
Reply to: 16403
Bandwidth and DACs
fiogf49gjkf0d
 Romy the Cat wrote:


Interesting, mats.

The unit is not “complex device with many settings”. All those settings have own meaning and if you know how a tuner works then there is absolutely nothing menacing in those adjustments. You went for RBRX1? I wonder why? I think RX1 has all set of futures that necessary for people like you and RBRX1 is more for relaying applications. Were you attracted by RBRX1’s ability to be used as a standalone DAC? BTW, how good that DAC when is used from external digital source, your Goldmund transport for instance?

Regarding the tuner. I never had it and I do not know what to expect. David was threading me that I will get one to test but it never materialized. Perhaps you mats will be traveling to Boston and you would bring your RBRX1 in? Then we will be able to see how RBRX1 stands.

There are a few things that I am very interested. They keep talking about the adjustable bandwidth but they never published the bandwidth of the window. I have plenty of good tuners that can do from 100KHz to 650kHz. What I would be interested is to see how RBRX1 will perform again other tuner with good selectivity at the SAME IF bandwidth. It is not difficult to get a good reception by narrowing the IF window. The problem is that with narrowing intermediate frequency we truncate the side band and losing a lot of audio quality, not to saying the stereo quality. With the way how the stations are seeded in US FM dial I think the 500kH is more or less optimal IM bandwidth, at least in Boston where we have each 0.2-04Meg a deferent station.

Another thing is the quality of that digital multiplex decoder. There are no modulations in decoder any more but pure sound. How all of it DSP processing affect sound no one know. At this matter we do not even know how many bits that 48K out has. I hope it has 24 but they do not say…. I would rather to have them to run A/D not 24/192 but 32/352. They then would be able to output 88K and have highest bits that can be eaten by DSP.

Of cause it is all literature and the quality of sound altogether is something that interests me. All those “over 50 parameters” (or better to say some of them) are relevant to set the tuner in optimism receiving condition for a given signal. Then there is the actual quality of sound that tuner is potent to show.  This variable is not known to me so far. I have seen online audiophiles were trying to compare RBRX1 to different tuners and found that MR-78 was more preferable.  That is funny as I do not consider the MR-78 worth any attrition, it is not to mention that audiophiles are generally understand Sound as much as Sarah Palin understand multiplication table….

It would be also interesting to run RBRX1 into external DAC and to see if you will be able to get better result. I do not know what kind digital signal they output. Most like it is Mono right after decoder with 19kH defeated. Anyhow, you can compare it with your Lavvy and get some idea about the quality of RBRX1’s output stage.

Rgs, Romy the Cat



Romy,


At this point I prefer the sound of the outboard DAC, Lavry DA-11.  I imagine your full blown Lavry would be excellent.
I have used the RBRX1 at its currently widest IF setting, which is 157kHz.
Agree with you about wanting the full 88K output.  Perhaps that is in the future.
When it comes to sound, I am still struggling to describe the RBRX1.  Different recordings sound very different.  So far I tend to think of it as a neutral window.  
The RBRX1 is light, and travels well.  Let me know if your local dealer is not responsive.

Mats
06-06-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,544
Joined on 05-28-2004

Post #: 39
Post ID: 16406
Reply to: 16405
You kidding, aren’t’ you? Is it widest?!
fiogf49gjkf0d
 mats wrote:
I have used the RBRX1 at its currently widest IF setting, which is 157kHz.
  
Mats, did you mistype or this tuner does has the widest IF setting of 157kHz? The 157kHz is ridiculously small number. Anything below 250K shall not give you any sonic quality, at least in the tuners I delft before with. Sure, at 157kHz then would have less noise, multipath and any other imaginable FM problems. They also shall not have overall sound too good. They will not get a lot of subcarrier signal with 157kHz of IF.


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
06-06-2011 Post does not mapped to Knowledge Tree
Dave_at_BW_Broadcast
Posts 7
Joined on 07-12-2010

Post #: 40
Post ID: 16407
Reply to: 16406
Clarification to Some Points
fiogf49gjkf0d
Just a couple of quick answers to some questions that have come up:

IF Bandwidth
The possible IF settings are:

27kHz, 36kHz, 45kHz, 53kHz, 62kHz, 71kHz, 79kHz, 88kHz, 97kHz, 105kHz, 114kHz, 123kHz, 131kHz, 140kHz 149kHz, 157kHz.

Please note that these bandwidths are for one side, so the full maximum bandwidth is actually 314kHz.

Digital Output
The digital output is 24bit.

Adjustable RF Parameters
The list of parameters starts on page 16 of the manual, there are too many to post here without making a long list.

http://www.fm-receiver.com/downloads/RBRX1%20Manual.pdf

Please let me know if I can help anyone further.


Kind Regards,
Dave
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