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DIY Stompboxes => Building your own stompbox => Topic started by: Bucksears on May 28, 2011, 10:49:26 AM

Title: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: Bucksears on May 28, 2011, 10:49:26 AM
Might be moving back to a clean amp/pedals-for-dirt setup and the BSIAB II has been my go-to distortion pedal for the most part. I do find it greatly lacking in bass compared to the CM Plexitone and Dr. Boogey.
Anybody got a fix for it that they are happy with?
Title: Re: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: jrc4558 on June 01, 2011, 01:17:55 PM
bypass the 120ohm resistor with something like 10uF capacitor. Eliminate the treble bleed cap in parallel with 470k resistor. You will loose some gain, but get some bass back.
Title: Re: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: liquids on June 01, 2011, 03:19:52 PM
In the end, after all the mods I've done to the real BSIAB circuit, I've revamped it significantly with really 'small' sounding low end (maximum tightness in notes and chords), and then used controllable active bass boost, and controllable active treble cut.  

I love it; I basically never tinker with distortion circuits anymore, it has the texture I'm aiming for every time I fire up my rig, after about ~15 years of only getting that sound in my mind and never from my gear!
Title: Re: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: euronymous0001 on June 01, 2011, 03:31:21 PM
Quote from: liquids on June 01, 2011, 03:19:52 PM
In the end, after all the mods I've done to the real BSIAB circuit, I've revamped it significantly with really 'small' sounding low end (maximum tightness in notes and chords), and then used controllable active bass boost, and controllable active treble cut.  

I love it; I basically never tinker with distortion circuits anymore, it has the texture I'm aiming for every time I fire up my rig, after about ~15 years of only getting that sound in my mind and never from my gear!

can you please post a schem or what-not to further explain this? thanks  :icon_mrgreen:
Title: Re: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: liquids on June 01, 2011, 03:38:52 PM
Quote from: euronymous0001 on June 01, 2011, 03:31:21 PM
can you please post a schem or what-not to further explain this? thanks  :icon_mrgreen:

No schematic was offered, but I can offer all an equation:

basic circuits + breadboard + listening(curiosity + perseverance) = Circuit/DIY_Fun

Enjoy!   :)
Title: Re: So, how did you increase the bass/low end in YOUR BSIAB II?
Post by: euronymous0001 on June 01, 2011, 03:50:30 PM
Quote from: liquids on June 01, 2011, 03:19:52 PM
and then used controllable active bass boost, and controllable active treble cut.

me think this one is a bax or james tonestack

Quote from: liquids on June 01, 2011, 03:19:52 PM
I've revamped it significantly with really 'small' sounding low end (maximum tightness in notes and chords)

but this is one  ??? ??? ???

change the caps between stages to have lower/lesser bass frequencies?  :icon_redface: