Bell MXA-1 Multiplex Adaptor outputs tinny sounding audio when hooked up

[vortalexfan]

Originally Posted by old_tv_nut

I found a schematic supposedly identical for the MXA-1, 2, 3, and 4. The only suspicious part to my eye is C2, 2 ufd electrolytic, output coupling for the input amplifier. If this went low in value, it could still pass the mpx carrier, but cut the lows in the sum channel.

Ok thanks I'll let the guy know what you told me and maybe see if he would like for me to check it out for him.