Mukhalled Posted December 24, 2004 Report Share Posted December 24, 2004 HiHow can I add bass-boost to this amp:http://www.electronics-lab.com/projects/audio/006/index.html :) Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted December 25, 2004 Report Share Posted December 25, 2004 You know I wondering if you could run the speaker at just a single polarity. Of course your not getting the full throw. I think one should try the amplifier I posted under Projects titled the simplest car audio amplifier. This will give more power. Quote Link to comment Share on other sites More sharing options...
Mukhalled Posted December 25, 2004 Author Report Share Posted December 25, 2004 sorry I don't understand what you mean! ??? Quote Link to comment Share on other sites More sharing options...
audioguru Posted December 25, 2004 Report Share Posted December 25, 2004 Hi Mukhalled,That amp has built-in feedback so you can't change it to give bass-boost. You must add a boost circuit to its input.Over the years I built 2 audio amps with bass-boost that I use at the beach. They both use a 2nd-order Sallen and Key high-pass filter at the input of each amp that were over-damped to give bass-boost at their cutoff frequency, then a rapid cutoff of lower frequencies the speakers couldn't produce which would have caused wasted power. They sound pretty good with small speakers (which I also souped-up). ;DI souped-up my clock radio with a very improved but not expensive 3" speaker and made an amp with up to 20dB (10 times the voltage) bass-boost. I fed an attenuated bass-boosted signal to the lowest terminal on its volume control for maximum boost at low levels. Then I fed a flat signal to a tap on its volume control so louder volume didn't cause overload due to boost. Turning up the volume gradually reduces the boost.Visitors wonder, "Where's the sub-woofer?".It sounds awesome for a little clock radio. ;D Quote Link to comment Share on other sites More sharing options...
Mukhalled Posted December 25, 2004 Author Report Share Posted December 25, 2004 Thank you so much Audioguru ;D Quote Link to comment Share on other sites More sharing options...
Mukhalled Posted December 25, 2004 Author Report Share Posted December 25, 2004 Do you have a suitable bass-boost curcuit to add it to the amp? :) Quote Link to comment Share on other sites More sharing options...
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