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Channel balance problem (Read 5928 times)
rock4016
Verified Member
Posts: 23
Channel balance problem
03/28/07 at 17:20:51
I purchased a used select knowing that it had a weak channel. The right channel is weak and distorts at moderate volume when using the front RCA inputs.
When using the rear inputs the problem disapears. What should I check first? input cathode resistors?
Thanks in advance!
Joel
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Select #145 (completely rebuilt)
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rayd
Seasoned Member
Posts: 166
Re: Channel balance problem
Reply #1 -
03/28/07 at 22:50:42
Hi Joel, I hope I'm not insulting your intelligence, but did you try different driver tubes and perhaps also flipping the byass switch to see if there was any change in signal strength?
- Ray
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Decware SE84CS Zen Select, vintage Philips CD880 w/CDM-1 MK2 transport & TDA1541A S1 DAC, Parker 95's, Promitheus Audio TVC Reference 1, Blue Jeans Cables, NOS Tubes, HAL-Os
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rock4016
Verified Member
Posts: 23
Re: Channel balance problem
Reply #2 -
03/29/07 at 14:21:02
Yes I tried different driver tubes same problem.
The bypass switch helped some but the problem is still there (to a lesser degree).
I don't believe you could insult my intelligence, since you are offering to help. 8-)
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Select #145 (completely rebuilt)
DIY SPUD 6CL6
DIY EL34 SE
DIY "Red Light District" EL84 PP amp
Scott Nixon UFO USB Dac
Dual 721TT Grado Red
Pass Labs Pearl Phono Stage
DIY 76 Linestage
Hathorne Audio 15" PSI Open baffle speakers, with 15" Augies
Sansui
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Rob
Senior Member
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Posts: 72
Re: Channel balance problem
Reply #3 -
04/15/07 at 13:46:29
I just discovered a problem on one of my Selects with one of the front input sockets being loose. It was causing a hum and decreased volume.
Check to make sure both inputs are both firmly seated.
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(2) SE84C-Selects
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selmerdave
Ex Member
Re: Channel balance problem
Reply #4 -
04/15/07 at 16:48:54
Also check the solders at the front RCA's to make sure they are good. If you are getting good balance with the rear RCA's the problem must be somewhere between the front RCA's and the point where they connect to the pins of the input tube.
Dave
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