Ok, thanks again. When I get my voltmeter, I'll go at it.
Just be careful where you stick your fingers...
Ok, thanks again. When I get my voltmeter, I'll go at it.
Just be careful where you stick your fingers...
Well, I managed to do it, and it all went well. Getting a zero reading was impossible, but I think I got within one.
In any case, the proof is in the pudding, and the RCA tubes are a major improvement, making the bass a little more robust and, importantly,
adding some warmth and smoothness to the upper mids (and highs), so my 009s sound extraordinary with my 007t/ii amp.
It's a superb combo in my book.
Silly question. Can you just swap one tube for another. I mean can you simply remove current russian tube and put RCA tubes WITHOUT doing any other tuning? Thanks
I need to bias my SR007tII as the original tubes on the right channel died. I see in the 007tII, there are TVR3 and TVR4. I can't find a schematic for this amp and am trying to find out what these trimmers are? Is setting the DC balance and DC offset with TVR1 and TVR2 enough?
TVR3 and TVR4 has corresponding test points. I am thinking it is for biasing the tubes but without a schematic, I can't really say. Anyone?
I have a back up copy of that instruction and the images somewhere. Send me a pm if I forgetHi. I am new in this forum because I am searching for detailed Information how to rebias a STAX SRM-007tII after a tube change. There is an old posting and link but it does not work any more. Can anyone help me?
So where do I have to put the probes of the DMM (there are internal test Points on the PCB), which is the related trimpot, which voltage, all zeroed?
Thanks in advance!