FS4-2W - Footswitch for Pro Gear

FS4-2W 4-voice Footswitch with 2-way Communication

London Power Footswitch for Pro Gear

$360 CDN, approx. $290 US

FS4-2W is London Power's footswitch controller to match our 4-voice preamps.

4-voice controller
direct-random-access voice-to-voice
2-way communication with audio unit
two DIN6 connectors for versatile connection
all-discrete circuitry
through-hole parts for servicability
no computers or software
powered from host preamplifier
tough stainless-steel chassis
16"w x 4"d x 1.5"h (406 x 101 x 38mm), 1.52kg

London Power's SUPER-STANDARD and MINI-MARSHMALLOW each have a two-channel tube tone generator plus an effects loop, providing four voice combinations, as A, B, Ax, Bx. Two front-panel switches on the preamp face access all the combinations of channel and loop on/off, as will two push-on/off footswitches connected via the rear-panel 1/4" TRS jack. When using either of these switching options, there will be times when both switches must be manipulated to get from one voice to another. With FS4-2W connected through the special 6-pin DIN jack, direct random access can be achieved, going from any voice to any other voice using a single switch transaction.

FS4-2W has four footswitch buttons, where each selects a specific voice of the preamplifier AND auto-cancels the previous selection. You can go from one channel with the effects loop 'on' to the other channel with the loop 'off' by hitting just one button.

FS4-2W does soemthing no other remote contoller does: it has two-way communication with the preamplifier. This means you can hit a switch on EITHER the preamp or FS4-2W and the preamp voice will change and so willl the LED status at both the preamp and the FS4-2W. This is something London Power has been doing with its remote controllers since 1990; players working on large stages love it. A further enhancement allows connection of multiple FS4-2Ws as each has two DIN connectors. The player can have a foot controller at stage-left and at stage-right, plus the front-panel controls of the preamplifier, allowing him or her to change the system voice from anywhere on the stage - and all control positions show the correct system status.

Because FS4-2W has two connection points, you can actually connect it to two preamplifiers. This is great in a "stereo" rig where identical preamps or dissimilar ones are used together, but their voices are always switched together, i.e. simultaneously.

All of this capability is achieved using only serviceable through-hole components, discrete circuitry and no computers. These are simple tasks, so why would you need a computer? The technology is time-tested and reliable. The footswitch buttons are very sturdy Switchcraft types that the player can stand on. The housing is 16-gauge stainless steel - again, sturdy enough to stand on.

Photo Gallery - click to enlarge

London Power Footswitch for Pro Gear - rear


About London Power

London Power was founded in 1990 by Kevin O'Connor, after two decades of research into innovative audio amplification techniques. Kevin is an audio designer, author and speaker, known for his proprietary methodology called Power Scaling, and for his eleven books on audio subjects. Whether you seek amps, kits or information, you'll find useful answers here on not just the "how" but the "why" of audio amplifier design. Please enjoy the information on this site, and don't hesitate to contact us with questions.

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PO Box 10012, Thunder Bay, ON P7B 6T6 CANADA