{"product_id":"crunch-gp-3500-1d-3500w-monoblock-car-amplifier","title":"Crunch GP-3500.1D 3500W Monoblock Car Amplifier","description":"\u003cp\u003eThe Crunch GP-3500.1D Ground Pounder is a mono Class D car amplifier designed to power a subwoofer system. It provides a dedicated low-frequency amplification channel for vehicles whose factory or aftermarket audio system needs more bass output. Its compact chassis helps make a dedicated subwoofer upgrade practical in a wide range of vehicle installations.\u003c\/p\u003e\u003cp\u003eThis amplifier is intended for listeners building a mono subwoofer stage rather than powering full-range speakers. Manufacturer-listed output is 875 watts at 4 ohms, 1,750 watts at 2 ohms, and 3,500 watts at 1 ohm. Select a subwoofer or subwoofer wiring configuration that presents a safe final impedance for the amplifier.\u003c\/p\u003e\u003cp\u003eThe GP-3500.1D uses a variable electronic crossover with a 12 dB-per-octave slope to help blend a subwoofer with the rest of the system. Its adjustable low-pass filtering and 10-40 Hz subsonic filter allow the bass range to be tailored to the enclosure and vehicle. A 0-180-degree phase adjustment can assist with system integration when bass response changes at the listening position.\u003c\/p\u003e\u003cp\u003eCrunch equips this model with a high-energy pulse-width-modulated power supply, SPEED-FET MOSFET output devices, and a QTD aluminum heat sink. These elements support the amplifier's Class D architecture while helping manage heat in a compact 11.5-inch-long chassis. Low-noise preamplifier circuitry is used for low-level source signals.\u003c\/p\u003e\u003cp\u003eThe GP-3500.1D can accept RCA low-level inputs or speaker-level inputs, making it suitable for many aftermarket and factory-radio upgrade paths. A wired bass remote is included for convenient bass adjustment from the cabin. It is a focused solution for adding a dedicated subwoofer amplifier to a car audio system.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono Class D Design:\u003c\/strong\u003e Provides one dedicated channel for a subwoofer system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-Ohm Stability:\u003c\/strong\u003e Supports manufacturer-rated operation down to a 1-ohm load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Electronic Crossover:\u003c\/strong\u003e Helps set the subwoofer's operating range within the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Subsonic Filter:\u003c\/strong\u003e Offers 10-40 Hz filtering for enclosure-aware setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRCA And Speaker-Level Inputs:\u003c\/strong\u003e Supports aftermarket radios and many factory-audio integration paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired Bass Remote:\u003c\/strong\u003e Allows convenient bass-level adjustment from the driver's area.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe GP-3500.1D has a black-and-red aluminum QTD heat-sink design with nickel-plated brass connection terminals and screw-down connectors. Its Class D layout, SPEED-FET MOSFET output technology, and pulse-width-modulated power supply are engineered for subwoofer amplification in a relatively compact footprint. LED diagnostics provide visual indication for overload and speaker-short protection.\u003c\/p\u003e\u003cp\u003eMount the amplifier securely in a location with adequate ventilation and do not install it upside down. Use 4 AWG cable at the power and ground terminals, up to 12 AWG speaker wire at the speaker terminals, and the specified 30A x 2 fuse arrangement. Connect by RCA or speaker-level input as appropriate, set the low-pass, subsonic, phase, and bass controls conservatively, and verify that the final subwoofer load is no lower than 1 ohm.\u003c\/p\u003e","brand":"Crunch","offers":[{"title":"Default Title","offer_id":45624269537350,"sku":"GP-3500-1D","price":163.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/617dUPLK40L.jpg?v=1784373258","url":"https:\/\/audiowatt.store\/products\/crunch-gp-3500-1d-3500w-monoblock-car-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}