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For years, guitarists have been using AB boxes as a means to fulfill their
‘tonal desires’. AB boxes let them transition between two
very different amplifiers to achieve very different tones. As most guitarists
know, dual-amp set-ups are absolutely wonderful. But alas, it is not always
convenient to carry two complete amps to a gig. This led us to look into
speaker cabinet switching as a solution. Interestingly enough, we soon
realized that using the same head and switching the speaker cabinets could
produce all kinds of amazing tones. Best of all Cabbone has emerged into
intuitive tool for the guitarist that is easy to use.
Although the concept of switching speaker cabinets seems pretty simple,
one look inside the Cabbone and you will see that there is a lot more
to making this work than a simple toggle switch. In fact the footswitch
does not switch the signal at all, it sends a toggle command to a programmable
timing chip that in turn, sets the whole switching process into action.
Why not just a simple switch? Well… If it were that simple, there
would be speaker switchers everywhere…
 The Cabbone requires you
to connect one speaker cable from the amplifier head, and connect two
more speaker cables from the Cabbone to each of the two speaker cabinets.
On a big stage, it is both impractical and inefficient to run long speaker
cables to and from a pedal board. This means that we need some type of
remote control.
Amplifiers need to see a
load or else they will self-destruct. This is most critical with tube
amplifiers. When is use, if they do not have a speaker connected to them,
all kinds of problems can develop including blowing the output transformer
and significantly reducing tube lifespan.
Power handling and tone
preservation. Switching the output of a 100W head is serious business!
The power has to be ‘managed’ in such a way as to ensure the
electrical contacts do not arc while ensuring the amp sees a speaker load
even if disaster occurs. And of course messing with the tone is simply
out of the question. With Cabbone… The show ‘will’ go
on and it will sound right! Here’s how we do it:
The Cabbone is absolutely stuffed with components including two high
performance relays. When you hit the Cabbone’s footswitch, it sends
a change command to a programmable timing chip. This in turn sends a command
to each of the relays turning one on and then moments later, turning the
other off. The timed overlap ensures the amp sees a constant load, thus
is protected from damage. Furthermore, in the unlikely event that the
Cabbone’s power is shut off, a default setting we call ‘Safe
Mode’ springs into action that connects the amp to speaker output
No.1, providing your amp with a safety net of sorts. Smart.
Of course the other huge advantage to using a timed relay solution is
that we can introduce a remote control to do the work of the footswitch.
You transition from your open back 2x12” Jensens to your 4-12 Celestions
and you begin to see the possibilities. This gets you thinking….
If I could have separate EQ and gain for each cabinet, this thing would
really rock! So you try to use one foot to switch the Cabbone and your
other foot to switch your amp channel, lose your balance, fall over and
break the neck on your old Gibson SG Junior… Dang! There’s
got to be a better way without having to resort to a complex MIDI set-up…
 Slingshot is an easy to use remote control system
that is based around simple footswitches and guitar cables. Just about
any footswitch or MIDI control device can be connected to the Cabbone
to remotely toggle the Cabbone’s speaker outputs. The Cabbone’s
Slingshot circuit is equipped with both an input and an output. This means
that you can use a footswitch on your pedal board to toggle the Cabbone’s
speaker output and then have the Cabbone send a status change command
to your guitar amp and have it switch channels at the same time. With
a single foot action – two completely different worlds of tone emerge.
Way cool! Click this image to enlarge.
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