The Bertha is a stand alone guitar cabinet consisting of four ten inch drivers and two twelve inch drivers. A single front panel selector switch allows you to switch between different speaker configurations without moving cables around or switching between speaker jacks. The switch allows for the following speaker configurations to be connected to the main input jack on the back panel:
- two tens, 60s blackface ceramic sound
- the other two tens, british sound
- two twelves
- two tens and two twelves
- the other two tens and two twelves
- All six drivers
The nominal impedance of the Bertha is four ohms.
To say the least, this cabinet offers the most in terms of flexibility. Not only can you set the cabinet for small, medium or large venues by going from two to four to six speakers, you can also get different tones from the cabinet by switching from one set of tens to the other and also combinations with the twelves.
The Bertha is very handy in the studio, where it can replace several stand alone
cabs and is also very much at home in the home recording arena. It is practical
as a gigging cab, as it is not very heavy and the average person can lift it. It is
no heavier or larger than the big Marshall 4x12.