TellMeWhy
Active Member
Hi! I recently acquired a very clean SX727, really beautiful and with a nice soft sound. The previous owener had lovingly "restored" it but not really touched or adjusted it technically, reading between the lines.
The SX727 sounds good, but as is so often, one channel is much stronger and clearer (more presence, more bass, more treble, generally a nicer sound) than the other. I've isolated the problem to the preamp by crossing over the pre-out main-in jumpers, checking a signal direct into the main-in, and checking the various inputs (tuner, aux, phono etc).
So the imbalance must be on the preamp board. Does anyone have a similar experience and any suggestions perhaps of which caps or transistors might need to be replaced? How accessible is the preamp board to work on?
All advice gratefully accepted- it's a very lovable receiver so far but missing the imaging created by a balanced and strong L-R field...
The SX727 sounds good, but as is so often, one channel is much stronger and clearer (more presence, more bass, more treble, generally a nicer sound) than the other. I've isolated the problem to the preamp by crossing over the pre-out main-in jumpers, checking a signal direct into the main-in, and checking the various inputs (tuner, aux, phono etc).
So the imbalance must be on the preamp board. Does anyone have a similar experience and any suggestions perhaps of which caps or transistors might need to be replaced? How accessible is the preamp board to work on?
All advice gratefully accepted- it's a very lovable receiver so far but missing the imaging created by a balanced and strong L-R field...