{"product_id":"mono-subwoofer-class-d-car-amplifier","title":"Mono Subwoofer Class-D Car Amplifier","description":"The Alpine MRP-M450 is a compact and powerful mono subwoofer Class-D car amplifier designed to deliver robust low-frequency sound. It offers a frequency response ranging from 20Hz to 200Hz with a +\/-3dB tolerance, ensuring deep and accurate bass reproduction. Power output is rated at 250 watts RMS x 1 into a 4-ohm load and impressively doubles to 400 watts RMS x 1 into a 2-ohm load.\n\nThis amplifier is equipped with a variable low-pass filter adjustable from 50-200 Hz with a 24 dB\/octave slope, allowing precise integration with your subwoofer. A tuned Bass EQ provides 0-12 dB of boost at 50 Hz, while a subsonic filter at 24 dB cuts off frequencies below 15 Hz, protecting your subwoofer from damaging infrasonic energy. Internally, it utilizes a MOSFET power supply for efficient operation and STAR Topology to minimize internal noise and prevent ground interference. The unit accepts both speaker- and preamp-level inputs and features gold-plated screw terminals for secure connections.\n\nInstallation requires an 8-gauge power and ground wire kit, which is not included. The amplifier's dimensions are 9-3\/16\"W x 2-3\/8\"H x 9-1\/2\"D, and it weighs 2.8 Kg. It is CEA-2006 compliant, ensuring reliable performance measurements.","brand":"Alpine","offers":[{"title":"Default Title","offer_id":52664223269176,"sku":"MRP-M450","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687547388.jpg?v=1784335437","url":"https:\/\/store.motormia.co\/products\/mono-subwoofer-class-d-car-amplifier","provider":"MOTORMIA","version":"1.0","type":"link"}