Operating Instructions
A 4173A
PA Amplifier Stereo/Bridgeable 2x550W
This PA Amplifier is an effective solution for demanding commercial audio
applications. This new series dubbed the “Apple” range have been com-
pletely redesigned by Biema to offer vastly improved cooling, efficiency
and circuit protection. This range is designed to function as a stereo or high
power single channel amplifier for use in foreground sound reinforcement
ie: pubs, clubs, cinemas and multi-function venues. The variable speed cool-
ing fan and ‘T’ shaped heatsink tunnel ensure the amplifier
performs well even in demanding conditions.
