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Topics - illprincipe

#1
Amplifier Discussion / simple limiter for chip amp
January 20, 2015, 03:35:43 PM
hi,

i'm thinking of building a hybrid amp, (tube preamp and lm386 poweramp), and whilst reading up on solid state / hybrid topology, one thing that often came up was a limiter to prevent the ss poweramp from clipping, which makes sense to me. The only circuit I found that was actually used in guitar amps was the VOX limiter (http://smg.photobucket.com/user/rickydon/media/voxtmixlmt.gif.html), which I find too complicated to implement for such a simple project.

1) does a limiter actually make sense for a simple lm386 chip amp, or am I overthinking this?

2) could I just use something simple like this: http://www.261.gr/limiters.html ?

3) apparently the STA540 (that is used in the orange microterror) has a built-in limiter - is someone aware of a chip more similar to the lm386 in terms of simplicity, footprint and that is proven and tested as guitar amp?

Does anyone have any other simple ideas? Or is it overkill anyway?