Improving IC02/04 audio
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This audio mod works on the 02 and 04AT. It increases the level of audio, as
well as rolling off some of the lows. Sounds much better. It involves the
circuit around Q105.

1.  Replace C119 with a .01uF cap (disc ceramic is fine).
2.  Parallel R131 with a 1uF cap (use a tantalum).
3.  Parallel R132 with a .01uF cap (disc ceramic is fine).


(Downloaded from GB7SYP)