System Description - PMC IB1S-AIII User Manual

System Description

III
The IB1S-A
activated reference monitor features a very high-quality passive crossover coupled
with PMC's own cutting edge 400W, Class-D amplification module built-in to the rear of the
cabinet. This bespoke module is a development of the amplifiers used in PMC's active monitor
and subwoofer products, and is designed for maximum fidelity, ultra-low distortion, and high
damping that results in near-instantaneous stop/start control over the entire driver complement.
A precision, hand built, 24dB per octave crossover network employs 31 carefully
specified and orientated components to divide the amplifier's output signal
into three separate frequency bands for the individual drivers. This ensures
each drive unit is working within its optimal range, both in frequency and
dispersion, making for a highly natural, neutral balance.
When a sub-woofer is required to provide the .1/LFE channel within an
IB-based multi-channel monitoring system, then twotwo sub2 active subwoofer
makes the perfect partner. This model employs an identical 10-inch long-throw low-frequency
carbon fibre and Nomex™ piston driver providing identical characteristics.