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Monitor Audio IWA-250 subwoofer amplifier

Monitor Audio logo

The IWA-250 amplifier has been designed to deliver optimum controlled bass when used in partnership with the IWS-10 in wall subwoofer and IWB-10 back box.
The Monitor Audio IWA-250 is a slim yet powerful subwoofer amplifier. Delivering up to 250watts into 4 ohms, a single IWA-250 will power single or dual IWS-10 subwoofers to provide higher power levels for larger rooms or to meet customer demands. The IWA-250 can be configured to switch on automatically using input signal sensing, or by using the preferred 12v trigger link from an AVR or system source. The IWA-250 will then automatically be switched on and off with the AVR, TV or system remote control handset.

The IWA-250 utilises a cool running Class D power stage driven by a PWM with integrated DSP. Filtering and functionality are controlled in the software for precise and reliable operation. The IWA-250 offers a choice of single LFE, balanced XLR and stereo RCA inputs. Output connection is made via two sets of push type terminals to provide connection to one or a pair of IWS-10 drivers. The front panel allows access to all control features for easy adjustment when fitted into a rack bay. An EQ switch offers a selection of music, movie and impact presets for the ideal response in-room. There is also an enclosure switch to calibrate the drive characteristics when the IWS-10 is used within or without the IWB-10 back box.
Streaming audio services

Perfect for...

Home cinema
Add dynamic bass to home cinema applications


Use with the Monitor Audio IWS-10 in wall subwoofer and IWB-10 subwoofer back box. Best suited to medium and larger size rooms
Technical specification

Technical specification

Class D amplifier with switch mode power supply
Maximum power output - 250 Watts @ 4 Ohms
Low frequency response - 25Hz - 120Hz
RCA stereo inputs
LFE input
Two sets of spring loaded push terminals for easy installation
Fused IEC mains socket
Trigger input
<0.5 watt standby power consumption
DC short circuit protection, over current and thermal protection
Height x width x depth - 43.7mm x 432mm x 263mm
2 year warranty

Key features

2 year warranty
Rigid high quality steel case
Switch mode power supply
Class D power amplifier
High efficiency design resulting in cool running
DSP control with advanced limiters
Volume control
EQ profile switch
Crossover control
Power LED with fault indication

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