The FSR SPC-20, an AC power conditioning and sequencing system, provides in depth surge protection as well as superior RFI suppression. It can be expanded to power any number of additional circuits all connected via a six-wire low voltage line.

The SPC-20 switches the line with solid state devices insuring an extremely long, trouble-free life. There are no mechanical relay contacts to arc or pit and disrupt the systems operation.

This equipment should be used in all sound and video installations that have a system on/off switch. It performs two extremely important functions, insuring that equipment turn on is accomplished rapidly and in the proper order eliminating any possible damage to high power amplifiers and the associated speakers; and it protects all the equipment from harmful transients and surges.

Supervisory feedback circuits are used to provide an indication that AC power is available to every load in the installation. In the event a load fault is detected, the system fault indicator on the front of the unit is illuminated.

This equipment performs the all important task of turning the rack(s) on and then after an adjustable delay, turning the amplifier(s) on. At system turn off the process is reversed — the amp(s) turn off first and then after the same delay the rack(s) turn off. When expanded with the optional SPC-20X expansion units, the system will provide sequential start-up of an unlimited number of additional amp circuits. On power down, the process is reversed - the amps are sequenced down, starting with the furthest expansion stage and ending with the local rack circuit.

The SPC-20 is a 19 inch rack mounted equipment occupying only one rack unit space (1.65”).

On the rear panel, a remote connector allows you to remote the system on/off switch. This switch can be either momentary or maintained. Lamp feed back for this switch is also provided. The 20 amp power cord plugs into branch circuits provided by the electrician.