Anybody have a Bass Booster schematic?

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This do not boost...just makes the opposite..attenuates the trebles and mids.

And simple and passive...not exactly what you want...but may be helpfull to someone......maybe.

regards,

Carlos
 

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a capacitor of say 0.01ufd in series with a resistor, one end connected to the output of the amp while the other end connects to the feedback point. as for the value of the series resistor you can try a value eqaul to the feedback resistor, you can increas or decrease as you go along.

this will increase bass at a loss of mid and highs, if this is acceptable to you.

this is the simplest way i can think of.
 
Here's a decent solution that gives you complete control over what your circuit will do:

Download the program called filterPro from download.com. Instead of relying on other people's schematics of filters and such, you can make your own.

Start off by selecting a low pass filter. You can select you upper rolloff frequency (probably 100Hz or less-depending on your application) and the order of rolloff. The higher the order, the steeper the rolloff and the more complicated the circuit. I would recommend just second order for a bass filter. After this, it will show you a schematic based on your specifications. At the output of the schematic is you bass frequency. From here, you need yet another circuit. You will need a gain section. For this, you can use a simple single ended inverted amp. (google it and you can find basic schematics). In place of the resistor that ties to the inverted output, you would place a pot for volume control.

Both of these circuits can use the same op-amp (and on the same chip). I would recommend the LM741 though LM324 or others would suit the application. Just get yourself a 5V steady power supply and you're in business!

If this seems like too much work, let me know and I can supply you with an old schematic I've made.

~Aaron
 
A normal tone control can be used, those Baxandall tone controls

You can fix your treble, or reduce it by 12 to 16 decibels.

And you can increase the bass also.... result will be big bass and some reasonable low mid range....you can include a small capacitor in the input "to eat!" ....to conduct to ground, the mid frequencies....but it will reduce the bass level too.... a little ...but it will do.

Of course can make filters for up and down...high pass, low pass and sophisticate the whole thing...but really...to have more bass, this is enough.

regards,

Carlos
 

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