[sdiy] OT: Bass Guitar Preamp

[Antti Huovilainen]

On Tue, 19 Dec 2006, Tim Daugard wrote:

> I haven't noticed or had complaints about noise with this preamp. I 
> redesigned it to better couple the bass with the preamp matching the 
> impediance of the bass and the new design resulted in more hum. That 
> design is not on my website.

A problem with the current design on the website is that the low input 
impedance will lower the resonance peak of passive pickups and thus reduce 
highs / otherwise affect tone.

Decently wired unit should not be the source of any significant hum or 
noise. I've built a high gain tube guitar amp and it's pretty silent until 
you plug the guitar in (at which point the RF noise from pickups will 
dominate).

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
  -- Lt. Cmdr. Ivanova