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Old 1st July 2011, 04:09 PM   #31
AndrewT is offline AndrewT  Scotland
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The distortion you have heard is probably clipping of the signal being sent to the speaker.
Either play much quieter or fit a much more efficient speaker.
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Old 1st July 2011, 06:39 PM   #32
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Originally Posted by AndrewT View Post
The distortion you have heard is probably clipping of the signal being sent to the speaker.
Either play much quieter or fit a much more efficient speaker.
That's what I mean....With a gain of 200, it gets louder, but...

The maximum volume of a gain of 20 (which is distortion-free) is about the maximum volume you can get out of a gain of 200 without distorting. So in my opinion...there's no need to set the gain that high, if you are pretty much going to be the same loudness on either side.

I'm waiting on my 3 x 5in speaker from Parts Express with an SPL of 89.6 and 8ohm, which is pretty much idea for LM386N-3...So we'll see then.
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Old 1st July 2011, 07:24 PM   #33
! is offline !  United States
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^ Since you intend it for use with more than one source, have you tested that gain with more than one (all) of the sources in case they have different signal voltage levels?
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Old 1st July 2011, 08:13 PM   #34
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No...unfortunately. I don't have an electric guitar/bass...Just an acoustic...

It's a gift for a friend that has one. It has Fender split humbuckers, I think.
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Old 3rd July 2011, 08:57 AM   #35
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just make it a switchable option... even try difirent size caps...
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Old 3rd July 2011, 07:02 PM   #36
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I don't really have any interest...It will serve it's purpose.
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Old 3rd July 2011, 10:12 PM   #37
johnr66 is offline johnr66  United States
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Test a music player with your amp. You may find it plays plenty loud. The idea is that the amp starts to clip (gets distorted at high levels) before the source signal. If not you may not be utilizing all of the amp's possible power. If not it will need some more gain. You should fine there is enough gain with pins 1 and 8 left open (AndrewT is correct zbout the internal design.)
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Old 3rd July 2011, 10:23 PM   #38
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Originally Posted by johnr66 View Post
Test a music player with your amp. You may find it plays plenty loud. The idea is that the amp starts to clip (gets distorted at high levels) before the source signal. If not you may not be utilizing all of the amp's possible power. If not it will need some more gain. You should fine there is enough gain with pins 1 and 8 left open (AndrewT is correct zbout the internal design.)
Well an update. Got that 3 x 5 speaker in...and wow! It is amazingly efficient...its very much louder. No distortion at all. Hits the lows with no problem...but most importantly its very loud and clean
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