BSIAB Clone for Bass...?

[railhead]

The bass player in our band really likes the sound of my BSAIB variant, but we need to maintain more bass in the signal.

Using the schematic at GGG for the BSIAB2, C3A is already at 1uF, so it seems like all the bass frequencies are coming in. I also don't see what I could do with the tone stack area to increase bass, either. How would increasing the two .0022 caps at the output impact things?

I guess one angle would be to add a blend to the circuit, but I thought I'd see if you guys had any ideas for making the "stock" BSIAB more like a Bass BSIAB.

Thanks for any tips!

[railhead]

No one has any ideas?

[jacobyjd]

That sounds like a breadboard project to me I'd say breadboard that sucker, then start cap-swapping, and probably fajingle with the tone stack.

[John Lyons]

Paralooper
http://moosapotamus.net/THINGS/paraloop.htm

Add BSIAB in the loop. Tada!

[jacobyjd]

Paralooper
http://moosapotamus.net/THINGS/paraloop.htm

Add BSIAB in the loop. Tada!

That too--good thought

[liquids]

Following the GGG schematic, and off the top of my head...for starters

Make C2 C4 C7 and C12 larger - like 1uF.

Jumper C8 and/or clip out R8.  Or just make R8 really big, like 1M or bigger.

You may like C3(a/B) much bigger, like 2uF, 5uF, or bigger.  In that case, C3b won't make much difference....

Breadboard is your friend here.  The bass content could probably be increased for a bass pedal without it sounding weird. However, since gain/distortion bloats the bass, too much additional bass will make it unpleasant - so it's a balancing act.

Surprised that the BSIAB is not too much gain for you, and a bass especially.

Also, a hearty internet search for schematics, forums, etc, might provide you some other mu-amp projects designed for and/or more friendly to a bass.

If you get creative and work more from scratch/breadboard than just simple compontent value swaps from the original circuit, than a Baxandall EQ (active especially) at the end of a 'tight' distortion circuit like the BSIAB can add a lot of nice bass frequencies, and it can bring it back to sounding 'big' and beyond for bass without being as likely to get mushy or farty like trying to increase bass within and between the gain stages.