Print Page - Anyone Try This: Bass Preamp?

Title: Anyone Try This: Bass Preamp?
Post by: Arn C. on June 07, 2004, 12:41:57 PM

Howdy!
Just wondering if anyone has tried building this and how does it sound:

http://univ.uniyar.ac.ru/~geograph/schemes/prea/fendamp.gif

I was wondering if I could use this in the front end of the bass amp I am building from an older ss power amp. I need something clean and easy and that works good.

Thanks!
Arn C.

Title: Anyone Try This: Bass Preamp?
Post by: smoguzbenjamin on June 07, 2004, 01:25:49 PM

Looks like it should do the trick, Arn. It isn't that complicated, so I doubt much could go wrong. What I'd do is breadboard it, then flatten te EQ on my existing amp (be it guitar or bass) and see how it sounds. If it appeals, build it and stick it in front of your power amp :) Should do the job just fine.

Title: Anyone Try This: Bass Preamp?
Post by: Arn C. on June 07, 2004, 01:49:24 PM

Thanks a bunch!!! Yeah, I just wanted something simple that will do the trick!

Peace!
Arn C.

Title: Anyone Try This: Bass Preamp?
Post by: smoguzbenjamin on June 07, 2004, 01:59:23 PM

Cool, hope it works out :)

Title: Anyone Try This: Bass Preamp?
Post by: Peter Snowberg on June 07, 2004, 02:08:22 PM

That looks well worth building and trying, but I would also add that you should check out multiple opamps in that circuit too. :D Be sure to audition an NE5532 in there for the clean end of things.

Take care,
-Peter

Title: Anyone Try This: Bass Preamp?
Post by: Arn C. on June 07, 2004, 02:26:22 PM

Sure will try that out! Thanks Peter!
Peace!
Arn C.

Title: Anyone Try This: Bass Preamp?
Post by: Eric H on June 07, 2004, 02:46:09 PM

That circuit was ripped (no acknowledgement, of course) from Robin Tomtlund's site :
http://hem.passagen.se/robin2/effects.htm

It was designed for mounting inside the bass, but no reason it couldn't be used as you plan. I would definitely raise the voltage-supply, 24v to 30v would add some headroom.

-Eric

Title: Anyone Try This: Bass Preamp?
Post by: smoguzbenjamin on June 07, 2004, 03:14:43 PM

Watch you don't fry the OA by giving it too much juice though.

Title: Anyone Try This: Bass Preamp?
Post by: Arn C. on June 07, 2004, 03:33:07 PM

Thanks Gents! I have an 18vdc supply I will use!
Thanks Again!
Arn C.

Title: Anyone Try This: Bass Preamp?
Post by: moosapotamus on June 07, 2004, 04:22:43 PM

How about a Burr-Brown opamp (i.e. OPA2134?)? I have yet to try any, myself. But, aren't they supposed to be higher performance (more headroom, less distortion) than the generic 5532, TL072 type opamps?

~ Charlie

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DIY Stompboxes => Building your own stompbox => Topic started by: Arn C. on June 07, 2004, 12:41:57 PM