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A 4173A
PA Amplifier Stereo/Bridgeable 2x550W
Operating Instructions
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.
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Summary of Contents for Biema A 4173A
- Page 1 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.
- Page 2 A 4173A PA Amplifier Stereo/Bridgeable 2x550W Front Panel 1. Mains Switch When you first press the switch, a soft start circuit will run to avoid a surge strike. In about 3-4 seconds there will be a click to indicate that the soft start has finished.
- Page 3 A 4173A PA Amplifier Stereo/Bridgeable 2x550W Rear Panel 1. CH-A/CH-B input XLR Standard XLR jack, below is the input method Pin1: signal ground, Pin2: signal+, Pin3: signal- 2. CH-A/CH-B Signal Link Output Standard XLR (male) socket for input signal link, its Pins are parallel connected with the female XLR socket so you can feed the same signal to another amplifier.
- Page 4 A 4173A PA Amplifier Stereo/Bridgeable 2x550W Specifications Power: 2 x 550W 8Ω, 2 x 800W 4Ω Power (bridged): 1600W 8Ω Output Connections: SPEAKON Freq. response: 20Hz - 20kHz ±0.5dB Input sensitivity: 0.77V Input Impedance: 20k Ω/Balanced, 10k Ω/un-balanced S/N Ratio: ≥95dB THD: ≤0.03%...