{"product_id":"hifonics-zd-2550-1d-compact-mono-class-d-amplifier","title":"Hifonics ZD-2550.1D Compact Mono Class D Amplifier","description":"\u003cp\u003eThe Hifonics ZD-2550.1D is a compact mono Class D mobile amplifier designed for subwoofer-focused car audio systems. It concentrates its output into one channel, making it suited to powering a properly matched subwoofer system rather than a full-range speaker array. Its adjustable low-pass crossover, subsonic filter, and bass controls help tailor bass output to the vehicle and enclosure.\u003c\/p\u003e\u003cp\u003eThis amplifier is intended for listeners building or upgrading a dedicated low-frequency section in a universal-fit vehicle audio system. It offers manufacturer-listed output ratings at 1, 2, and 4 ohms, allowing installers to select a compatible subwoofer wiring configuration. The mono-only layout keeps the setup focused on bass reproduction and simplified subwoofer amplification.\u003c\/p\u003e\u003cp\u003eA PWM MOSFET power supply and Class D topology support high-output operation in a compact chassis. Hifonics also specifies a Simpatico dual-coil pulse-width-modulated power-supply design intended to help maintain voltage through the output devices. The aluminum heat sink is designed to assist with heat dissipation during operation.\u003c\/p\u003e\u003cp\u003eSignal and tuning connections are arranged for practical installation, with nickel-plated RCA inputs and molded, angled power, ground, and speaker terminals. The amplifier accepts speaker-level audio inputs as well as RCA signal input. A built-in bass control and wired bass remote provide convenient adjustment of low-frequency output.\u003c\/p\u003e\u003cp\u003eFor systems without a conventional amplifier remote lead, DC Signal Sense can switch the amplifier on when it detects a signal at the RCA inputs. Illuminated diagnostic indicators monitor overload and speaker-short protection conditions. With its compact item dimensions, the ZD-2550.1D can fit installations where dedicated subwoofer amplification is needed without using a large amplifier footprint.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMono Class D Design:\u003c\/strong\u003e Delivers a single amplified channel for subwoofer-oriented systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2550-Watt Maximum Rating:\u003c\/strong\u003e Manufacturer-listed maximum output is 2550 watts at 1 ohm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Low-Pass Filter:\u003c\/strong\u003e Adjusts the low-pass crossover from 50Hz to 250Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubsonic Filter:\u003c\/strong\u003e Adjustable 15Hz to 40Hz filtering supports enclosure-specific tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Signal Sense:\u003c\/strong\u003e Can turn on from an RCA input signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired Bass Remote:\u003c\/strong\u003e Included remote provides convenient bass-level adjustment.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe ZD-2550.1D uses an aluminum heat sink, a black finish, nickel-plated RCA inputs, and high-temperature impact-resistant connection hardware. Its power, ground, and speaker terminals are housed in a molded, angled terminal arrangement to support organized wiring access. LED diagnostic circuitry provides illuminated indication for overload and speaker-short protection.\u003c\/p\u003e\u003cp\u003eMatch the connected subwoofer load to one of the amplifier's listed 1-, 2-, or 4-ohm output ratings, and use the onboard low-pass, subsonic, gain, and bass-boost adjustments during setup. The amplifier uses 4 AWG 12V and ground terminals, 12 AWG speaker terminals, and an external 125A fuse specification. It can be installed using RCA or speaker-level audio inputs; DC Signal Sense is available when using RCA signal input.\u003c\/p\u003e","brand":"Hifonics","offers":[{"title":"Default Title","offer_id":45631943508038,"sku":"ZD-2550-1D","price":291.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/714T8spZRSL.jpg?v=1784390307","url":"https:\/\/audiowatt.store\/products\/hifonics-zd-2550-1d-compact-mono-class-d-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}