Airspeed FM-50 Owner's Manual - Page 8
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Print PageWe have configured the amp this way to prevent the amp being limited in use if, for example, you've forgotten your footswitch
and you still need to use the amp. Note that if you want to use a crunch sound instead of "boosting the crunch" signal as would
normally be the case, simply set the Boost Gain control at 12:00 and then vary the crunch tone by the crunch control. Even
though the boost channel will still change the tone of the crunch setting as described previously above, you will be able to get a
very close approximation of the crunch channel tone when boost is not enabled. If you don't want to hear a certain effect for
example, you would just turn all the control knobs for that effect or setting fully counter-clockwise, essentially turning the
feature off.
You will also notice that you cannot utilize tow master volumes. In this case, master volume is lit and you would only have use of
one master volume control until you re-connect the footswitch.
4. Connecting your Amplifier and Speaker Cabinet(s)
In order to achieve the truest possible tones, each channel needs its own set of speakers, i.e., a speaker matched for that
particular tone. As is commonly known among guitar amp experts, different speakers are required in order to optimize for
different tones. Why do you think those vintage Marshall® and Fender® amps have different speakers? Speakers are the most
important component in defining your tone!
Airspeed's patent-pending Circuit-to-Speaker® technology allows you to get the truest tone possible. The Airspeed FM-50
provides completely independent CRUNCH channel and CLEAN channel outputs on the head unit. That means that you can
connect two or more 2 x 12 Airspeed cabinets, each with its own set of speakers, that you can alternate between, so that when
you switch channels, you switch speaker sets/cabinets. You're playing the right speakers for the right tone. No other amp
company in the world gives you the ability to do this. It's one of the key features that differentiates Airspeed's amps among the
most discerning guitar professionals worldwide.
Your Airspeed FM-50 amp has four (4) speaker outputs on the rear backplate panel. The two "Switched Channels" outputs, as
described above, allow you to connect one Airspeed cabinet (with one set of speakers) to each of the different channels, clean
and crunch, which automatically output each of those signals to different cabinets when you switch channels (either by the
front panel toggle switch or the footswitch).
The other two outputs, "BOTH CHANNELS/ Parallel Outs", are two distinct outputs, each allowing both channel's signals, clean
and crunch, to output from each output jack (the signal that is output is determined by whether you have your amp set to CLEAN or
CRUNCH). Use one of these outputs (either one is okay, they are both outputting the same signal) if you're using one (1) Airspeed
2 x 12 cabinet. In another example of a scenario, you could connect multiple cabinets to these outputs for more overall speaker
volume (the amp would be pushing more signal into more speakers).
The following examples of configurations are not the only ones possible. You can use your creativity to essentially "daisy chain"
multiple speaker cabinets in any number of ways, given the fact that there are parallel outputs on the amp and on the Airspeed
2 x 12 speaker cabinets.
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Airspeed FM-50 Owner's Manual, Ver 1.4