Overview
The SPX20 is a six input stereo source selector designed to extend the number of monitor returns available on a mixing console. Equally it can be used to select up to 6 music sources and distribute these to 2 zones with separate level control and on-off switching for each zone. Channel one has an input level control to facilitate on-the-fly adjustment, while the other inputs feature screwdriver level trimmers providing adjustment for +4dBu and -10dBV signal levels and balancing volumes between sources. Additionally channel one features front panel jack sockets in parallel to the rear panel inputs to facilitate direct connection of an instrument. Inputs are selected by momentary action buttons that also allow more than one input to be selected and mixed to the output. Switching from one source to another is CMOS controlled and silent. Two separate outputs with level controls and on-off switching provide a means of selecting and balancing levels between different types of monitors. A front panel headphone output is also provided with separate level control. A master output DIM button provides 20dB of attenuation and a Mono sum switch is provided for connection of mono sources.