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V
Bozak B 4000, 2 sets of crossovers, N101, N104 w/ original capacitors.
Several options for amplification: Dynaco Stereo 70, Dynaco 120, Pat 4, Hafler 200. Peachtree pre-amp w/tube, amp 200 watts? Carver amps, 1.5T, red diodes, 2 Carvers, w/view meters,

Dahlquist DCM 9 pair, DCM 7 pair, DQ 10. All need to have surrounds replaced.
cheep607
Hey! Do you know the technical specs of the Technics SE A100 VU meter light bulbs? In the manual it appears as XAMS19P. See attached photo:img_3177-2048x1537.jpg
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cheep607
cheep607
Thanks! I just bought from Japan a SE A100 and SU A200. I'm sure you have a lot of history about these two devices. I heard about the CMOS chips on the pre amp and the bulletin service to prevent killing the chips. I would really love you to share this information, thanks!
SVI2004A
SVI2004A
Only FET devices are the 2SK389 differential pair on the voltage amp board… there’s no ICs other than an op amp M5238P on current drive board. Pretty well all the transistors are bipolar.
cheep607
cheep607
Oh ok thanks! in the case of the pre amp, it has the the infamous uPD6364CA chips.
Robert.garb
Hello sir. I am in need of a volume control for my AU-717. I have read that you have a solution or spare parts for sale. Any help would be appreciated
J
Looking for info on speaker batting. Im rebuilding a pair of ESS amt 1b's, the white stuff i pulled out was nearly dust and had to go. I see a few different types and would like to keep it as close to factory spec. Or am I crazy? Should I just pick out one and be done with it??
B
Hi Avionics from Australia wondering if you can help me with the old stk3156 problem my amp is mint or was until it failed bloody STK do you make discrete drop ins for my amp or know where i can source one ive tried every forum between here and Mars any help would be great mate
Cheers Brooxs
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prattacaster
Which STK is it? I make a discrete power module that is compatible with many models?
B
Brooxs
Its STK3156 Yamaha R-2000 I haven't heard of anyone actually making them but if you do would be awesome
avionic
avionic
No, I don't.
1
Hello avionic are you still restoring yamaha components .I have a cr4 pre amplifier needing gone through. Can you help me with this
T
vintage lafayette la-125t stereo amp when powered up sounds good for 30 seconds then right channel starts hissing and as the amp warms the hiss gets louder.
futterman321
Retired
futterman321
futterman321
I'm open to most new ideas and concepts that help in the improvement of music. When concepts are introduced in audio, like quantum physics, in a company's product by people without a science/engineering background, I look away and call them out. Worse are those who use the term snake oil make me cringe, tend to be narrow minded, whine about price, stuck in old theories, you know the type.
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