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In Reply to: RE: Input Transformer wiring question posted by rockpassion on July 22, 2014 at 17:08:03
Richard
It doesn't matter but here is the thing...You may be best to bypass the input transformer and a 470k grid resistor to ground on the input 6sl7 and then couple the input with a .1uf capacitor...Sometimes the input transformers rolled off the low end and the high end for the optical sound track applications.
Honest amplification is better than excessive 2nd order distortion anytime.
Follow Ups:
Michael,
Thanks, I have not gotten these amps up and running yet so this will be another modification but it is one I want to do. I am still getting a low level hum. Being a newbie at this and having only constructed amps and preamps from instructions my troubleshooting skills are somewhat limited.
Have you worked on this amp before? I know it is very old but I have seen a number of responses that these are decent sounding amps once the Input Transformer is bypassed.
Your help on this is very much appreciated.
Richard
Richard
Email me a phone number where I can reach you and I can walk you thru any issues.I would love to share some ideas on these amps as I have a pair as well..Check your email and I shot you a phone number as well.
Honest amplification is better than excessive 2nd order distortion anytime.
Michael,
I really appreciate the offer. I did receive your email but did not see a phone number. So here is mine, 714-747-7609 cell phone. My email address is rav6258@aol.com. I am located in So. Cal. and I am not sure where you are, I mention this because of time differences. I will not be home this weekend but am available next week. I am retired to I can be reached anytime. Let me know what your schedule is like so I do not interrupt anything on your end.
Once again, thanks. I would love to get these up and running.
Richard
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