Car Amplifiers  
Additional Views
Contact Us
For Price


* = required fields

Car Amplifiers
Mono Subwoofer Amplifier

Alpine's MRX-M55 X-Power series class-D amplifier incorporates many of Alpine’s PDX advanced digital technologies at an affordable price. This amplifier was specifically engineered to offer the best performance in its class.


* = required fields
Total max power 550 W
RMS power output 350 W
Number of channels 1
Amplifier class D
Load impedance capability 2 ohms
4 ohm output power 350 W
2 ohm output power 550 W
1 ohm output power 400 W
Crossover frequencies 50 - 400 Hz, -24dB/oct.
Frequency response Frequency Response (+0, -3dB: 1W into 4 Ohms) for Subwoofer: 5 -400 Hz; Frequency Response (+0, -1dB: 1W into 4 Ohms) for Subwoofer: 10 -300 Hz;
Total harmonic distortion THD+N (10W into 4 Ohms) for Subwoofer: <0.004 %; THD+N (300W into 4 Ohms) for Subwoofer: <0.04 %;
Additional information Versatile Controls and Adjustments - Their small size and versatile controls allow the X-Power amplifiers to easily be added to either an aftermarket or factory system and can be setup to accommodate a variety of system configurations. With a 4-channel non-fading speaker input connection, hooking up to your factory-installed system is a breeze via speaker-level input. Also, the pre-out is buffered (mono models) to allow for additional amplifiers to be added without the need for splitters, maintaining signal quality and helps simplify installation in big bass systems. Speaking of big bass, all MRX Mono models are also equipped with a subsonic filter, to keep inaudibly low power-wasting noise out of your subwoofer system.
RCA inputs Yes
RCA outputs Yes
Speaker level inputs Yes
Subsonic filter Yes
Cut-off frequency (subsonic filter) 5 - 30 Hz
Width 9.84 inch(es) / 25 cm
Height 2.28 inch(es) / 5.8 cm
Depth 9.06 inch(es) / 23 cm
Warranty 1 year(s)
UPC# 793276011756

Okanogan County's destination for quality appliances and the latest in home entertainment. Located at 18 E Riverside Drive in Omak Washington, Ladoux's Appliance and Electronics is there for you with friendly, knowledgeable staff to help you find the right product to fit your needs. We offer a full line of quality home appliances, commercial appliances and parts to keep you going. Ladoux's has been providing top notch service in Okanogan County for 15 years. We pride ourselves on offering the latest in home entertainment which brings you 4K resolution. We invite you to stop by our showroom for hands on demonstrations of our products.

Also available at Ladoux's: Car audio, pellet grills, mattresses and security systems.

Contact us                          509-826-0880 or email

Hours of Operation             Monday thru Friday 9:00am to 6:00pm       Saturday 10:00am to 4:00pm