Rockbox mail archiveSubject: Re: Any way to reduce Archos stereo mic level?
The solution depends on the cause - if the overload was caused by too high levels going into the JBR, then you may be able to fix the problem electrically, if the problem is an acoustic overload of the microphone, there isn't much you can do about it (you can try an acoustic filter of some sort, like packing the mic with foam rubber, but that will also effect the frequency response).
To tell what the problem is - check the level meters on the JBR display - if they're peaking out during recording, it's possible to set up a potential divider of some sort. Try a dual-gang 10k logarithmic potentiometer, connect the outside tags to the output of the pre-amp, and the "earthy" side and the centre tags to the JBR.
If the level meters weren't peaking out, it's most likely the microphone that's the problem. Quality microphones will work up to very high acoustic levels (say 140 dB) without distorting, but then you pay several hundred dollars for each microphone alone, let alone the pre-amp. My guess is that these mics wouldn't handle much over about 100 dB, if that.
Hope that makes sense.
Page was last modified "Jan 10 2012" The Rockbox Crew