|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
141.239.172.61
In Reply to: RE: Excess Line Voltage vs Amplifier Sound posted by sayntjack on January 08, 2017 at 17:57:25
Plugging your amp into a line conditioner that outputs 117v is an easy way around the problem. Just be sure you get a unit that has enough current capacity for your needs.
There are things you can do to the power supply during the rebuild to bring your amps' B+ down. Increasing the size of the resistors in the filter supply or adding a choke if space permits or another choke can reduce the B+ and improve the sound quality of your amp.
Follow Ups:
The issue with excessive line voltage I think is not limited to high B+. Rather, at 124V, saturation of the power transformer core and the accompanying increase in harmonics and waveform distortion are possible issues.
speculation: the forming of a theory or conjecture without firm evidence
A ~10% increase in line voltage is saturating the transformer core? I'd prefer a transformer with more headroom than that.
Filament/heater over-voltage could also be cause of the sonic issues you mention... and will reduce tube life.
Cheers,
91.
"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: