{"product_id":"crunch-pz21530-4d-1500w-4-channel-class-d-amplifier","title":"Crunch PZ21530-4D 1500W 4-Channel Class D Amplifier","description":"\u003cp\u003eThe Crunch PZ21530-4D is a four-channel Class D car audio amplifier designed to add external power and tuning flexibility to an aftermarket or factory-based sound system. It can drive front and rear speakers in a conventional four-channel layout, or it can be configured for bridged operation where appropriate. Its compact chassis helps make it practical for vehicle installations where amplifier space is limited.\u003c\/p\u003e\u003cp\u003eThis amplifier is suited to listeners upgrading factory speaker output, adding power to component speakers, or building a mixed speaker-and-subwoofer system. It accepts low-level RCA signals as well as speaker-level input, allowing integration with source units that do not provide RCA preamp outputs. A full-range RCA output can also pass signal to an additional amplifier.\u003c\/p\u003e\u003cp\u003eOutput is rated at 4 x 375 watts at 2 ohms, 4 x 200 watts at 4 ohms, or 2 x 750 watts bridged at 4 ohms. These configuration options allow the amplifier to support a four-speaker system or a combination of speakers and bridged channels. Proper speaker impedance and wiring configuration are important when selecting an operating mode.\u003c\/p\u003e\u003cp\u003eVariable high-pass and low-pass crossovers provide 12 dB-per-octave filtering from 40 to 400 Hz. This lets an installer remove deep bass from smaller speakers or direct lower frequencies to compatible subwoofer channels. Built-in bass control and adjustable input sensitivity further support system-level tuning.\u003c\/p\u003e\u003cp\u003eThe PZ21530-4D uses Crunch SPEED-FET MOSFET output technology, a MOSFET pulse-width-modulation power supply, and QTD quick thermal dispersion heat management. Nickel-plated brass connections and hex set-screw terminals support secure power, ground, and speaker wiring. LED protection diagnostics provide visual status monitoring for overload and speaker-short protection.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Channel Class D Design:\u003c\/strong\u003e Powers a full speaker system or bridged channel pairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1500-Watt Maximum Power:\u003c\/strong\u003e Provides power capacity across four amplifier channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Ohm Stereo Capability:\u003c\/strong\u003e Delivers up to 375 watts per channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Electronic Crossovers:\u003c\/strong\u003e Helps match frequency output to connected speakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRCA And Speaker-Level Inputs:\u003c\/strong\u003e Supports aftermarket and many factory-radio installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Protection Diagnostics:\u003c\/strong\u003e Indicates overload and speaker-short protection status.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe amplifier has a compact black and gray chassis measuring 11.75 by 7 by 3.25 inches. Its design incorporates QTD thermal dispersion, SPEED-FET MOSFET output devices, a MOSFET PWM power supply, and nickel-plated brass connections with hex set-screw terminals. These components are intended to support efficient operation and secure electrical connections.\u003c\/p\u003e\u003cp\u003eMount the amplifier to a solid surface with adequate ventilation and do not mount it upside down. Use 4 AWG power and ground wiring, protect the positive battery cable with the specified external 40-amp fuse within 18 inches of the battery, and use 12 AWG speaker wiring. Set gain and crossover controls after confirming speaker impedance, channel mode, and polarity; professional installation is advisable for complex or bridged systems.\u003c\/p\u003e","brand":"Crunch","offers":[{"title":"Default Title","offer_id":45624269602886,"sku":"PZ21530-4D","price":138.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61sOmUQkvuL.jpg?v=1784373308","url":"https:\/\/audiowatt.store\/products\/crunch-pz21530-4d-1500w-4-channel-class-d-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}