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07-20-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 1
Post ID: 11141
Reply to: 11141
Yamaha B-2 V-FET amplifier.
fiogf49gjkf0d

This there is continuation of a series of post I have about the Yamaha B-2 in the MiniMe thread:

http://www.GoodSoundClub.com/TreeItem.aspx?PostID=11029

I got today the papers for my B-2 amp.  A quick look at the circuitry and reading the manual did help to solve a few problems with sound that I initially had.  It is an interesting amp and it is fully DC coupled. It does has some distinctive sound not so typical for SS amps. There are some things that I like in this amp and some that I like less. To get the best from this amp it would need to do some minor modifications but I do not decided to go to this route at this point as I do not know year it I would like to keep this amp.

Anyhow, I post the documentation for the amp as I find it is interesting.

Yamaha B-2 User Manual:

http://www.goodsoundclub.com/PDF/YamahaB2_Manual.PDF

Yamaha B-2 Service Manual:

http://www.goodsoundclub.com/PDF/YamahaB2_Service.PDF

Yamaha B-2 Report:

http://www.goodsoundclub.com/PDF/YamahaB2_Report.PDF

Yamaha B-2 Circuitry:

http://www.goodsoundclub.com/PDF/YamahaB2_Circuit.PDF

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
07-21-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 2
Post ID: 11145
Reply to: 11141
Listening the Yamaha B-2 amp.
fiogf49gjkf0d

Yamaha B-2 reportedly was a top-flying amp in end of 70s, during it very brief production period. It has in a way cult reputation, so I’ve bitten it.

I was forced to very mildly and temporary modify it, just running the signal directly the entry of the first stage and was a able to listen it.  The amp is fully DC coupled with no signal cap in path. The output stage is made around the high-biased V-FET transistors.  They are very rare, very expensive and since they have high bias they reportedly make the output stage to operate alike a tube in A1 class.

I do not know how accurate it is but the B-2 does not sound like a regular SS amp, in fact it does not sound as any other SS amp I heard. It is different. It is softer but at same time dynamic and elegant. I do not have a speaker that I might use as some kind of reference and I drive with B-2 my MiniMe. Sine I addressed the meager problems I generally like what I hear. The interesting question would be it this 30 years-old amp consumer is compatible with the contemporary high-end amps. I do not know how to answer this question. I generally do not like the contemporary powerful high-end amps. I might say that I do not like in Yamaha B-2.

There are two major aspects that I feel would disqualify B-from being the “great amp”, at least those that I recognized so far with my MiniMe. First is the imaging. The B-2 has very primitive imaging, I have no idea why. If I keep the amp I might look as the crosstalk and rejections but as is (my amps is virtually new) it has very bad imaging, not bad but there VERY bad. Second is bass. The Yamaha B-2 has different bass then it shall be, there is no more hyena bass that I reported before and what I have is the good Yamaha B-2’s bass. It is deep and extended but it is wrong bass. There is something very abnormal in it. I did not look deeper into it and frankly I do not care as if I keep the amp then I will high-pass my MiniMe me with passive radiators. Still, great amps, if B-2 is willing to be, shall have different bass.

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
07-22-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,146
Joined on 10-12-2006

Post #: 3
Post ID: 11150
Reply to: 11145
SS vs. "Good" SS amps
fiogf49gjkf0d
Well, I know that you know that the B2's imaging capability is the last thing the amp will tell you.  Back when heard the Sony Esprit amps my own expectations about imaging were not very developed.  The bass was from 515s in bins as I recall, and, there again, hard to say how that might translate.

But the tonality and normal range of dynamics (jazz) were very nice at that time, better than anything I had heard before and those amps left quite an impression on me, like the old FET10 phono/pre-amp, to the point that I waited in vain for years for a pair of these amps to turn up at a price I could afford.  At the time I certainly would have taken the Esprit over the ARs, CJ's, etc., for whatever that's worth.

The big problem I have with most SS amps I have heard for many years is, no life, and the sound "implodes", ie, it falls back on itself as it happens

With many more years gone now, I am not sure about SS bass at all...  I think I'd have to re-think my whole approach.

Best regards,
Paul S
07-25-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 4
Post ID: 11182
Reply to: 11145
The B-2, I think I’ll keep it for now.
fiogf49gjkf0d
It is not that I hugely like it, in fat if I know about them what I know now I would probably try something else.  But B-2 does what it does, it has some cone and pros and it is not much different than any other SS amps I would try. Also, I found a way to deal with B-2’s wrong bass – I just patched the MiniMe with passive radiators and it looks as it “cured” the problem – the MiniMe resonance frequency looks like got higher and bass less expended but WAY more proper. Also there is not port noise anymore…

I did not do a lot of modification with B2. I just decreased it gain for a lot (350R-36R divider) – to synchronize the B2-MiniMe gains with Milq-Macondo. I increased the input impedance to near 400R – I do not want the plugged B2 to affect the Melquiades input filters. I also bypassed all amp switchers – was very badly implemented- and deliver the signal from input directly to the first stage.  All modifications are very-very simple… Let live with this beast for now and will see if I will hate it in a few month.

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
11-18-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 5
Post ID: 12305
Reply to: 11141
The powerful SS V-FET shootout?
fiogf49gjkf0d

Last few days listening MiniMe with B-2 my patients was running out. With all more or less OK sound my B-2 had wondering eye about imaging. The amp has a minor fluctuation of gain between the channels and this fluctuation can be addressed by …kicking the map. I was keep hitting the amp with all my stupid force and it become to develop some odd noises – obviously it needed some service.

I kind of felt that I have finished with soldering in my live and I very intentionally do not even keep solder in my home. Couple weeks ago one audio-devil brought solders to me and I felt that I might invest some time to fix up my Yamaha B-2. So, I did. It took 2.5 hour and I re-wired the B-2 with direct paths to input out, replace most of the parts that I felt need/might to be replaced and recalibrated the amp. As the result it become superbly imaging stable, with no noises of any kind and with quite nice sound. The only things that I did not do was to un-mount those V-FET transistor and to put between then and the heat sinks the contemporary much better performing thermo compound, probably I will do it in sometimes feature. Still, I do not get as lot of power from it now, so it might stay as is for now.

I was listening the amp after the face lift and I kind of begin to like it in a new way. In addition it is a very powerful beast – something that did not experience for a while.  What would be interesting sometime is to take my B-2 in a room with more or less capable conceptual speakers that need a lot of power, driven by let say Boulder 2050 , or Halcro MC-70, or Spectral DMA-360,  or Lamm M1.1,  or MBL 9007,  or Mark Levinson 33, or Krell MRA, or Edge NL,  or Gamut S-300,  or Burmester 909, or Jeff Rowland 9T, or Bryston SST or Pass X.5 and to see how that stinky 30 years old 140W V-FET consumer amp will push up against the “industry” leaders. In face if I have the Lamm M1.1 then I would be more then enough to say what is going on. Unfortunately my MiniMe is not the “investigative” speaker but for a sake of general education and I would like to hear Yamaha B-2 on something more conventional.

Anyhow, if you are near New England, have a good acoustic system that you drive with 100-150W of power, has no problem with ego and have an interest how an old V-FET will sound then my B-2 now in a condition to show off what those amps were able to do. It would be interesting to see if we have any progress in powerful SS amplification.  I think we do and I think that Lamm M1.1 in Class A would be more interesting then my B-2 ….but I am so long off from the powerful SS amps that it might be fun to play it again as the “quest star”.

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
11-18-2009 Post does not mapped to Knowledge Tree
coops
London, United Kingdom
Posts 115
Joined on 02-16-2007

Post #: 6
Post ID: 12307
Reply to: 12305
Vfet
fiogf49gjkf0d
I have been listening for the last few weeks to a modern Vfet design by digital do main, the B1-a , 'inspired' I suppose by the earlier Yamaha amp, it too unlike any ss amp I have heard, it isn't at all harsh or strident it has tremendous resolution, really controls the 1601's , and the tone is really marvellous, it has made me think again about solid state.
Keith.
11-18-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 7
Post ID: 12310
Reply to: 12307
The modern V-FET design?
fiogf49gjkf0d
I did not know that there are any modern V-FET designs. As I understand, the V-FET transistors were available in 1970-1980 and were not produced since there. From what I heard that the DIY people who try to do V-FET amps buy old Sony and Yamaha machines and pull the transistors from there. It would be interesting if someone today would make V-FET only not at the consumer mass-marker level as Sony/ Yamaha but at the level of high-end audio paranoia, with more interesting power supply. From a different perspective the B-2 has no single capacitor in signal path and everything is DC-coupled. Perhaps it would worth to put in there the contemporary better Schottky rectifiers, better filtration and to see how it would go. I do not really have too much motivation to do it with MiniMe but what I move to my new larger place and would need much more power for lover bass then something like B-2 will be the things that I consider, unless Adrian will convince me to build a tube bass-DSET around 3CX1500A7/8877 or GS-35B or GU-48 or around the subject of my wet high-power dream: RB300-3CX or 3СХ300А1


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
11-18-2009 Post does not mapped to Knowledge Tree
coops
London, United Kingdom
Posts 115
Joined on 02-16-2007

Post #: 8
Post ID: 12311
Reply to: 12310
New I believe.
fiogf49gjkf0d
This is their website, http://www.digital-do-main.com/ and this is the designation of the vfet they use, 2sk 77B ( I will try and find a photo )is it new?
Keith.
11-18-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 9
Post ID: 12314
Reply to: 12311
Some more B-2 info.
fiogf49gjkf0d

There are some information about that new Japanese amps in the threads below:

http://www.audiocircle.com/index.php?topic=65312.0

http://www.diyaudio.com/forums/solid-state/37247-any-info-manual-about-yamaha-b-2-a.html

It looks as it is some kind of custom production (though I think it is lie) but they went for Yamaha B1 version where plus and minus made on the same polarity transistor. The B2 use commentary pairs, so they are different all together.

I would like to pass some comments about my Yamaha B-2 experience. I cannot comment confidently about sound.  I do not want to drive with it the Macondo line-arrays, so I use it with MiniMe. The MiniMe has very good Focal Utopia TN51 tweeter (I love it a lot) but everything else is not what it need to be. The B-2 is very cool designed amp, small and sexy. The whole mixing-switching board shall be trashed and bypassed. This leaves a lot of space inside right next to the front panel. Those 4 regulators in the front panel need to be trashed and instead then placed multi-turns for adjustment of bias and DC. In the real word it would be very cool to set bias with a respect to the given specific load of the B-2, measuring the lower distortions and at maximum power.

I based my B-2 at 68mA and I will let it to be as it for a while. After all that 30 year the amp does very nice with .000 if DC at output. I t would be more fun if I have better speakers for the B-2

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
11-18-2009 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,146
Joined on 10-12-2006

Post #: 10
Post ID: 12316
Reply to: 12314
Bias?!? DC?!?
fiogf49gjkf0d
Now we're talking!

Romy, I have long nodded in agreement with your observations about the critical nature of "plate loading".  Meanwhile, my own recent experiments have shown that dialing in voltage and current is just as Big a Deal with SS as it is with tubes.  Those who merely accept the "factory settings" are (potentially) missing out.

BTW, the B2 was idesigned from the start as a "cult" amp, with the whole "clean-sheet" design and Bushido/nutso attention to detail that truly set it apart.  Plus, it was Really Expensive!  Talk about your wet dream: this and the Esprit were the stuff of Cult Nerd Fantasies, Back in the Day.

Paul S
11-18-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 11
Post ID: 12317
Reply to: 12316
It is not the Cult Nerd Fantasies, perhaps for 70s…
fiogf49gjkf0d

 Paul S wrote:
my own recent experiments have shown that dialing in voltage and current is just as Big a Deal with SS as it is with tubes.  Those who merely accept the "factory settings" are (potentially) missing out.

It it not as Big Deal with SS as it is with tubes – it has different effect and sonic impact. From a different perspective the B-2 use transistors that have very high voltage on bias, it might make all things different. BTW, there are no “factory settings” as many amps allow you to select idling current. The Lamm M1.1 has on the back a speaker impedance switch. What do you think that switch changes? Of course the output stage current! Many amps has the same feature on one way or another any person who use SS and understand how to get power from SS to a given load do set an optimum current for the given load of their speaker.

 Paul S wrote:
BTW, the B2 was idesigned from the start as a "cult" amp, with the whole "clean-sheet" design and Bushido/nutso attention to detail that truly set it apart.  Plus, it was Really Expensive!  Talk about your wet dream: this and the Esprit were the stuff of Cult Nerd Fantasies, Back in the Day.

I do not know. It looks like a regular amp to me. I do not buy into and not willing to propel the myths. If you say that it was Really Expensive then it was a reasonable to the price amp. It is was Cult Nerd Fantasies amp then it was not good fantasies as there are few things that need to be done differently.

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
11-20-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 12
Post ID: 12330
Reply to: 12305
The Yamaha B-2 and bass.
fiogf49gjkf0d
I was listening recently my revived Yamaha B-2 and was thinking if it has “interesting” in bass. Coincidently this week had great influence by the celebrated contrabassoonist Susan Nigro, so I shut down Macondo and let B-2 with MiniMe to care the job. Well, what can I say? The MiniMe bass is crap and my finial displeasure with B-2 bass is very much derivative from this fact. It kind of disappointing that so much efforts (and money) was wasted to get so mediocre result with MiniMe bass. Anyhow,  I do not see anybody with conventional speakers response to my “B-2 challenge”, so I think I would need, just for test to, try using a section from the Macondo’s array and to drive it from the Yamaha. It might be interesting…

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
12-15-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 13
Post ID: 12484
Reply to: 11141
The non-annoying status.
fiogf49gjkf0d

The greatest thing that happened to my Yamaha B2 amp was the fact that I got rid of my MiniMe ported bass section. The MiniMe is truly nice now and I operate in the highly desirable not annoying status. That all made me to pay more attention to what Yamaha B2 does. 

It had to say what Yamaha B2 does – it sounds in the way how it sounds as I have absolutely no problem with it sound.  It has no annoying SS character and it sound very soft and lash, though the fact the I own the tweeter that B2 driver might have a lot of to do with this fact. I put in the B2’s input a 24 step-attenuator with 250K impedance to fight the huge B2’s gain. All together it turned out to be a nice amp. It has a great protection circuit that does work VERY well and it’s outputs are perfectly shortable – I do not like when they are not.

I did play with Yamaha B2’s bias. The service manual insists 40mA. Still I asked me what would be the right bias for my specific load. My fist sentiment was to get max power to my specific speaker. The amp has much more power then I even need for my room. They I decided to go not for power but for LF character at high volume.  Experimenting with bias I feel that the amp sound more polite with much higher bias. I do not know why – I presume that the amp is running at higher power before it switched to class B – I did not measure it. Still, juts purely by listening I end up with 120mA bias – 3 times higher than it was designed for.

Now my B2 runs quite hot, that is not end of the world for winter. I decided to not risk the B2’s unique V-FET transistors and put the forced cooling in the game. I put atop of B2 two of my favorite Antec 200mm "Big Boy" fans. I am huge fun of the Big Boy fan. It is large 7.8 inch, thin, DC, low spin that at low voltage is absolutely silent with very food air flow. Even at higher spin it has very pleasant LF harmonics. So, I put two of them above each transistor heat sink and powered from a high resolution thermosensor . After the calibration of the thermosensor it begins to work very well. The amp starts and run for 10 munutes with no fans spinning. Then the fans very slowly to pick up rotation and at 65 degree Celsius the funs run at ~200RPM with no sound of any kind. The temperature is stabilized with surprising stability. I took 8R power resistor and drove the amp for a half hour at fill power. The fun spins faster but still far from it max 800RPM speed. Very cool.

Yamaha B2_Fan_1.jpg

Yamaha B2_Fan_2.jpg

Yamaha B2_Fan_3.jpg




"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
12-25-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 14
Post ID: 12547
Reply to: 12484
A good New England SS technical needed.
fiogf49gjkf0d

It is ridicules how pleasant the Yamaha B2 sound when it operates in class A and how much worse it sounds when it switches to class AB. I did not measure the power but with default 40mA it switches to class B very soon. With my current cooling techniques I can run the amp at 120mA where it plays in class A up to the volumes (or a bit less) where I typically listen.  I would like to keep the amp further without switching into class AB but it does not dissipate heat good enough with my cooling. What would be very good is to have a pure class A biased amp on the V-FETs.

I will probably try a different cooling, trying to bias the B2 at 150mA. A bit dangers as it looks like B2 has no thermo-protection. Also one of B2 channels is switching to class AB at 8dB sooner than the second channel driven with the same current. It needed to be adjusted but I do not have too much knowledge about SS. So, I guess I need to find a local technical who would calibrate both of channels to enter class AB at the same time. It shall be very simple to do. Probably to throw in there a thermo-relay would be a good idea, if I intend to drive it too hot. Perhaps I would need to put in there a switch that would drop bias to 50mA, switching it to summer mode….

It is not too hard to do myself but I would like not to. It would be cool to have a local guy around Boston who is accustom with SS amp and who would be motivated to work on my Yamaha B2.

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
04-03-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 15
Post ID: 15924
Reply to: 11141
My bass amp kaput.
fiogf49gjkf0d
That suck, it was two days as my playback shine at full glory and then my bass amps blew up. It has heavy noise from one channel and sounded like it self-arouses like crazy. It turned out the one of PS large caps got burned and stopped to filtrate the output stage rectification. BTW, Yamaha use in this amp super caps for filtration: the Nichicon EX – it very hard to get them nowadays.

Anyhow, I put in there the large caps that I had in my hands but the amp still does not work properly – it runs a lot of distortion.  This is all that I need now – to fight with SS bass amp… Does anybody know any local technician who can fix it?

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
04-03-2011 Post does not mapped to Knowledge Tree
scooter
Posts 161
Joined on 07-17-2008

Post #: 16
Post ID: 15925
Reply to: 15924
Echowars guy to fix vfet gear...
fiogf49gjkf0d
I remember seeing this echowars guy all over the boards with respect to vfet amp work. I don't know his work and don't remember where he is located but might be worth pinging


http://audiokarma.org/forums/showthread.php?t=45419&highlight=b-2    

http://www.diyaudio.com/forums/solid-state/152656-yamaha-b2-p-s.html
04-03-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 17
Post ID: 15926
Reply to: 15925
What to do for now?
fiogf49gjkf0d
Well, one way or another I will fix my B2 amp. I think while I have no bass amp it would be a good idea to try other amps for ULF: powerful tube amps or even class D amps.  I do not have inspiration to dry Class D amps and I have no powerful tube amps, that sucks.  I even though today to finish the Zaratusta II – that would be 200W hybrid in pure class A that will be able to drive absolutely anything (I will have a control over PS voltage, bias and cooling). I just do not want to do the things myself.  It would be so nice-to write to somebody check and then get the things done and working… My specially is to bitch about Sound not to solder capacitors and search for burned out transistors…

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
04-21-2011 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 18
Post ID: 16127
Reply to: 15926
A good Boston technician is found?
fiogf49gjkf0d

Hm, this is interesting. I have fixed one of my B2 power amps. It works very nice but the most important is that it looks like I have found a local technician who actually can do the job.

When I got a problem with my second bough B2 I called to Stereo Surgeons at East Hartford, Connecticut . Kenneth Bernacky is very experienced and very responsible in his work person and I felt very comfort able to send both of my B2 to him. Unfortunately Ken also have highly paranoiac attitude and I asked myself of I want to be exposed to it. I did not want to hear lectures from him hot to live and how bad people around him – I wan fast fixing of my amps. So I was looking other avenues.

A few years back after the event with that retard repair-mad in Waltham who almost killed my R&S tuner I had a very pleasant conversation with a guy from QAudio in Cambridge. I never cared too much about QAudio but it was old QAudio. It looks like QAudio store was bought a guy name Dariusz. He care the same low-hi product line but his is the guy who does reappears himself. It looks like he is in town for a while and before owning QAudio he made rehears for other Boston shops that just collected jobs for him.

Like anybody else in this field he has his own attitude and he begun to explain me that that amp is garbage and need to be thrown to trash. I was taken back as I was not prepared to this move. When I go to doctor I do not anticipate that he would tell me that I need to die.  Also, Dariusz did not strike me as the person with whom I might argue about Sound. However, his attitude toward to repair itself was in my estimation just what the doctor ordered. When I begun to explain to him what was wrong with the amp and what I did with it he with smile informed me that he does not care and I shall pretty much shut up and let the people who know what they do to do their job. With all honesty it was exactly what I was looking for in a technician. I instantly stopped to worry and in a few days I got my B2 in perfectly operational order, wonderfully repaired and serviced, the price was reasonable and the whole thing was great.

Dariusz, swiped it at full power and the amp got perfect symmetrical clip at 153W – what else to expect! If he fix my second B2 and have some extra time in his hand I might commission him to finally assemble the Zarathustra II. I am very enthusiastic as he is looks like know what he does and he is young enough do not behave like a jerk.

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
11-05-2016 Post does not mapped to Knowledge Tree
EchoWars
Posts 1
Joined on 11-05-2016

Post #: 19
Post ID: 22833
Reply to: 16127
Digging up old posts...
fiogf49gjkf0d
Was cruising the web, looking for a pic of the back of a B-2 (for various reasons) and saw a pic of Romy and had to check it out. Hope he is well and healthy.

Mark Twain once said "When a man loves cats, I am his friend and comrade, without further introduction." I second that notion.

You get anything odd happening with the B-2's (provided you still have them, as I can see how old these posts are), by all means, drop me a line. I'd be happy to help if I can.

EW
11-05-2016 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,540
Joined on 05-28-2004

Post #: 20
Post ID: 22834
Reply to: 22833
I do like my B-2
fiogf49gjkf0d
 EchoWars wrote:
Was cruising the web, looking for a pic of the back of a B-2 (for various reasons) and saw a pic of Romy and had to check it out. Hope he is well and healthy.

Mark Twain once said "When a man loves cats, I am his friend and comrade, without further introduction." I second that notion.

You get anything odd happening with the B-2's (provided you still have them, as I can see how old these posts are), by all means, drop me a line. I'd be happy to help if I can.

Ew, yes, the B-2 are fine and I have 2 of them, both are modified (trashed all front end). One I use for my money setup and another I am planning to use for my ULF channel. I need to admit that use of B-2 for ULF itself is questionable and I do not feel that the amp has proper bass (with my woofer towers at least) but in my case I put in front of it a tube EQ that make it slightly better and almost usable. I do like the B-2 amps; they are unexpansive, relatively well performing, reliable and very convenient to use. Putting Fans in them and the rest crap that I did was absolutely not necessary – they are perfectly fine and stable as they are 


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
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