[sdiy] Advice - tubes & B cells

[Oren Leavitt]

Common 9 volt transistor batteries connected in series work great as a compact B cell substitute. 5 for 45 volts, 10 for 90 volts, etc. And C or D size alkaline batteries as needed for the filaments.

Oren

-----Original Message-----
From: Glen <mclilith at charter.net>
Sent: Feb 2, 2004 4:26 PM
To: "Cornutt, David K" <david.k.cornutt at boeing.com>, synth-diy at dropmix.xs4all.nl
Subject: RE: [sdiy] Advice

At 06:05 PM 2/2/04 , Cornutt, David K wrote:

>The other point is, if he's using a laptop and wants
>to be mobile, how practical is it to lug around a
>tube preamp?  A and B batteries being hard to find
>these days... :-)

I've seen tube circuitry that would run from very common batteries. I have
to admit it's one more box to lug around, but he might like the sound well
enough to justify the extra baggage. If he feels a plugin is "good enough"
that's fine with me, but I'd like to encourage him to at least *try* a real
tube circuit.

later,
Glen Berry