headphone preamps, suddenly no bass?

[Michael Zacherl]

Hi D.,

    thanks for you attention! ;-)

> If one channel is somehow out of phase, that would cut a lot of the 
> centre sound.

good point! But different connections and sources show the same symptom.

> Unless you have a tool to check caps in-circuit, or can see a damaged 
> one, the 'let's blame the caps' angle could be futile ;) but if the 
> circuit has equalisation...

well ... yeah. No I don't have such a tool, I only could have checked by 
eye (bellied cap etc.).
Honestly, a broken cap is rather the last resort ... I'm running out of 
ideas.

> Only logical way to trace is to feed the amp with a low tone that is 
> being chogged, then scope through the audio signal bits of the circuit 
> until you see a problem then narrow it down. Chav. Unless you are still 
> covered..

I'll check that again.

    Thanks a lot, Michael.


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