| taloyd |
hello,
Just finished my Gainclone, using the PCB's from the BrianGT group buy. Everything went well, everything seems fine, BUT:
With any input other than a portable discman, the amplifier doesn't function properly.
With my passive preamp, the gain is 1 (ie: unity). There is almost no sound unless it's all the way up, in which case there's still not much.
With my CDP with variable out (from my living room system, a CAL CL-15 (really really high-end) there is hideous noise at a very high but consistent level (doesn't change with music). But the amplifier amplifies and music comes out (sounding nice, except for the noise-to-signal ratio).
Advice? Any measurements I can take to find the problem?
thanks,
-tal |
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| Nuuk |
| What value components have you used? |
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| Sherman |
| It sounds like you may have mixed up the resistors. Gain is determined by R2 and R3 (I'm not thinking clearly with zero sleep in 30 hours so double check that :dead: ). If you mix up the values you will get the result you describe. |
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