aion BETA PREAMP Manual - Page 7

Browse online or download pdf Manual for Music Pedal aion BETA PREAMP. aion BETA PREAMP 12 pages.

Print Page

BUILD NOTES

Series & parallel operation

While the original Beta Lead and Beta Bass amps each had two channels, the channels were identical

with the same internal circuitry and external controls. This would normally only be useful for effectively

switching between two presets, except for the unique feature that the channels could be run in parallel

and blended together.

We are planning to release a full dual-channel Beta at some point, but in the mean time, you can run two

of these single-channel units in parallel using a passive splitter and mixer to get the same sound.

You can also try running two of these units in series, which is a trick mentioned in the owner's manual of

the original amplifier that is accomplished by patching the preamp output of "A" into the input of "B".

Enclosure size

This project was designed for the Hammond 1590BBS enclosure, which has the same height as the

125B or 1590N1. If you don't use the Hammond brand, be careful—not all 1590BBS enclosures are the

same. For example, Love My Switches sells two different types, and the

CNC Pro

version is correct while

the standard one is too short.

The 1590BB2 seems like a close equivalent, but it's about 4mm shorter. It may be possible to fit this

circuit in a 1590BB2, but we have not tested it, so you're on your own!

Another alternative is the 1590C (also available from Tayda and Love My Switches). It's about 10mm

taller than necessary, but if that's all you can find then it will definitely work.

BETA PREAMP