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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I heard the 'cole' LCR phono by the hifi supply recently at a friends house and it sounded ok, the Allnic 1500 that I am using at the moment is the best phono I have heard, and the price is extremely reasonable for the design, valve regula...
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Cello HI I have only heard the Cole for a short time, so it wouldn't be fair to compare, also I really can't say to what extent the LCR circuit contributes to the sound of the 1500, the Allnic is very dynamic, has high resolution and makes inst...
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Yes, Roman: the two stages design is having the gain you correctly pointed-out.Sure would have paid - and it was discussed, as well, during pre-building weeks - to go for an higher gain design, BUT I feel more confortable in going ahead to play with ...
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Hello,May I have your comment for my diy LCR phono sound. Thanks.http://www.youtube.com/watch?v=gwO6Uc-oOqg Bee Gees Greatest (3 songs)http://www.youtube.com/watch?v=ZYjRayM78FM We Are The Worldhttp://www.youtube.com/watch?v=W9Jvvockz38 The Beatl...
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I heard the 'cole' LCR phono by the hifi supply recently at a friends house and it sounded ok, the Allnic 1500 that I am using at the moment is the best phono I have heard, and the price is extremely reasonable for the design, valve regula...
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Paul,The gain of my phono stage has the RIAA loss factored in. Without the RIAA loss counted, the gain would be about 66-68 dB. [quote user="Paul S"]I have never used the 417 or 437, but I have heard plenty of whining from folks who do. They often p...
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You are right about the sound of YouTube.I recorded the sound directly from LCR phono through TASCAM DR-100 recorder (24 bit / 96 kHz) and added it into video then uploaded to YouTube....
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...future subjunctive...Romy, I am not sure that the first part of your response actually addresses the first part of what I was talking about. So, I +/- repeat myself:As an extreme example, if I see a claim of "80 dB gain" for a phono stage, it is ...
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Hello Romy,I am no power expert but here are my observations on your situation.Even though a PS Audio and others create a perfect AC sine wave this does not seem to be the answer, even for low draw front end components. It seems that some type of&nbs...
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i do it and i did it, but as a newcomer you have to sort out all the infos...not that easy!
[quote user="Romy the Cat"](This is normal, I have written about it many times. Those large bass drivers have a lot of inductance in Voice Coil, the inductan...
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TTH's ?By the way I've heard several 834's not just one. You are right though, I don't particularly care for what I feel is its rather obvious character.No ET magnetics either, hard to find/hear over here. I think a just handful were sold...
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[quote user="coops"]Romy Hi, Ralph installs every pair of speakers ,I know that it can take a week or more to install and optimise the larger systems. There are plans for amplifcation , he is working closely with Mr Park of Allnic Audio. M...
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Romy Hi, Ralph installs every pair of speakers ,I know that it can take a week or more to install and optimise the larger systems. There are plans for amplifcation , he is working closely with Mr Park of Allnic Audio. Mr Park has some...
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It is not about the LCR phono as a concept – many companies manufacture the RIAA LCR constant impedance networks: Lundahl, Tango, S&B, Da Vinci, A-D, your Allnic looks like dose them as well. The LCR filter is not complex and any manufacturing ho...
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Roman,> Any IC-base RIAA corrector should cost $30, with no expiations.Now now.... My "Analogue Addicts Phono Stage" is Op-Amp based and requires at current OEM bugetary pricing in 1000pc lots of $12.25 each. Add Tinfoil & Polystyrene Capacito...
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Hello,May I have your comment for my diy LCR phono sound. Thanks.http://www.youtube.com/watch?v=gwO6Uc-oOqg Bee Gees Greatest (3 songs)http://www.youtube.com/watch?v=ZYjRayM78FM We Are The Worldhttp://www.youtube.com/watch?v=W9Jvvockz38 The Beatl...
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[quote user="Romy the Cat"]
I never had a lot of trouble with high transconductance tubes. I use the EC8020 a lot. Stefano, you might look into this EC8020. I never seen it but just looked into the datasheet and it looks very interesting tube and i...
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Hi!
Stefano just made me aware about this forum, so I registered. Interesting thread about LCR RIAAs, one of my favorite topics :-)
About the gain of the WE437 phono: Since Stefano wants to use external MC step ups, I designed the phon...
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Thanks for the tube gel sockets/absorbers hinting, Roman... Thomas had to use such a vibes taming mandatorily, being both 801 AND 437A tubes rather microphonic prone...Using his clever design... ZUT! Completely silent... also, unfortunately, he had t...
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Paul, I do not think that “before or after RIAA losses” requirement has any merit as no matter what kind type RIAA filter is being used it always will lose around 20dB. I do not think also that there is a “safest path” or “reasonably affordable”....
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[quote user="Romy the Cat"]
How difficult is it to find 437As good enough for a phonostage? For commercial applications is it a dead tube. WE might produce it again when they stated to redo the tubes but the existence of the Russian 6C45P pretty mu...
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[quote user="rowuk"]How many sources do you currently have? If you are building a phono corrector, make it for 4 volts output. If you have a PC for digital playback, there are good DACs with more than 2V output. That would leave a tuner to pimp - cer...
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...and it is a neat 1.5VRMS with zero attenuation. So with my -6dB it puts out 0.75VRMS, so not quite as bad as I thought. I will have to do some listening to try and determine whether -6dB is needed or if I can get away with less attenuation (zero...
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Hi Romy, I don't doubt for a moment that there are plenty of people 'who know' who will wax lyrical about the benefits of open loop eq in feedback circuits. There are people 'who know' who will tell me that valve amplifiers cannot be as good as trans...
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Hi Guy, [quote user="guy sergeant"]My experience with the 834p stemmed from having one at home for about a year soon after it was launched. I did try different types of ECC83 in it which did change it's balance slightly but not enough to make me like...
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Hello Coops,
Can you explain more why the Allnic 1500 is the best phono you have heard, and why was it superior to the Cole LCR ?
What is the superiority of LCR-RIAA phonostages , besides having excellent RIAA correction curves ? What about the...
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Thanks, Keith and Montepilot.
I did have my 7788-7721 phonostage with LCR filter and I always liked it, pay attention - it was 68dB gains with just two stages and with NO step-up transformer. Allnic Phono is 3 stages with step-up transformer...
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That was the 4 way system designed by John Sheerin using GOTO drivers on my request. The tweeter is GOTO 160 with S3000 horn xover at 5kHz. The high mid is GOTO SG370DX with S600 horn xover at 1kHz-5kHz. The low mid is GOTO 505TT with S150 hor...
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Hi Romy,Just thinking out loud here, but I have been listening to my mono DSET/Macondo for quite a while now and recently changed back to my old acoustic system so that I could poke around in the DSET innards for a little while. The old system (in s...
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[quote user="twogoodears"] Yes Roman... I feel pretty like I entered a sort of "cul de sac", tube-wise... I contacted, few months ago, Western Electric USA and they told me that, at USD 750 ea. they have "plenty" of N.O.S. WE 437A... I've been ab...
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