hifigeek1

Responses from hifigeek1

Who has info on R&R caps in ARC D90B amp?
If you are sucking the trace off the board, you are overheating the trace. I just use a standard blue colored solder sucker from OK Industries. 
Do amps have a sweet spot?
Let me add that some speakers sound better at higher volume as well. 
ARC LS15: did they ever use Mundorf MCaps on it ?
Johnsonwu yes I am one of Steve's official repair depots. I've known Steve for a very long time. He is a friend. I also do mods but we never 'competed' for business. We all have our niches. 
ARC LS15: did they ever use Mundorf MCaps on it ?
GNSC is no longer in business. 
Audio Research SP-3A-1 part
I doubt the power supply is at fault as one channel is operating. Try actuating all the push button in the center of the unit, one at a time. You may have some dirty switch contacts, or the selector switches for the same reason. I would be happy t... 
I need help with a Jadis amp
You did not say which speakers you were using... 
Audio Research Reference 5SE reliability
Sequence56 that is normal as you have sufficient clearance above the preamp. 
Bias setting help needed
Did they supply you with a circuit diagram??? 
What should I upgrade
Try finding a used integrated like an ARC, Prima Luna etc. 
ARC LS15: did they ever use Mundorf MCaps on it ?
To my knowledge Audio Research never used Mundorf caps in production. They used Rel,Infini and MIT in older units. Hope that helps. 
ARC LS7 vs LS16/I
For the record, the advantages of using a jfet input are many but the single most important advantage is the decrease in noise. Comparing the SP-16 an all tube preamp and the SP-17 with its jfet input, you will find the SP-17 is almost 10dB quiete... 
Audio Research Reference 5SE reliability
Three inches is not an acceptable clearance above the preamp. Your dealer should have told you this. Heat rises and needs to go somewhere and not get reflected back into the preamp. This can cause premature aging of the parts inside the preamp. Yo... 
Audio Research SP-6C vs. SP-6C-1?
I was not supplied with a C-1 circuit diagram so I am assuming the C-1 and the E are similar. Power supplies are the same. The only differences are as follows: The C uses diodes for current sources, The E uses Fets. The C ver uses (2) opto coupler... 
Audio Research SP-6C vs. SP-6C-1?
I will have to look but I believe the difference was the removal of a regulated stage for reliability issues. If I get a chance I will compare both and let you know. 
Audio Research Vs115
There are no reliability issues with that amp that I am aware of.