{"product_id":"stx-audio-stx2000-5d-5-channel-class-d-amplifier","title":"STX Audio STX2000.5D 5-Channel Class D Amplifier","description":"\u003cp\u003eThe STX Audio STX2000.5D is a five-channel Class D car amplifier designed to power a complete speaker-and-subwoofer system from one compact chassis. It provides four full-range channels for front and rear speakers plus a dedicated subwoofer channel. This layout helps simplify a system upgrade when separate amplifiers are not desired.\u003c\/p\u003e\u003cp\u003eAt 4 ohms, the amplifier is rated for 80 watts RMS across each of its four full-range channels and 200 watts RMS for the subwoofer channel. At 2 ohms, it is rated for 130 watts RMS x 4 plus 400 watts RMS for the subwoofer channel. Its 2,000-watt maximum-power rating describes its peak output specification.\u003c\/p\u003e\u003cp\u003eThe STX2000.5D is intended for listeners who want independently amplified door or component speakers along with a subwoofer. Adjustable high-pass filtering helps remove deep bass from the full-range speakers, while the dedicated low-pass filter sends bass-focused frequencies to the subwoofer channel. Separate front, rear, and subwoofer gain controls support level matching within the system.\u003c\/p\u003e\u003cp\u003eIts circuit design uses MOSFET technology along with a double-sided FR-4 circuit board and SMT components. The Class D platform is specified at over 80% efficiency, helping make the amplifier suitable for installations where available space and heat management matter. Thermal protection is specified at 80°C (176°F).\u003c\/p\u003e\u003cp\u003eThe amplifier accepts RCA inputs for front, rear, and subwoofer signal paths, making it appropriate for an aftermarket head unit with preamp outputs. A remote bass-level control is included for adjusting subwoofer output from the listening position. With adjustable crossover controls and five amplified channels, it provides a focused foundation for a conventional full-range-plus-subwoofer car audio system.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive-Channel Layout:\u003c\/strong\u003e Powers four full-range speakers and one subwoofer channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Ohm RMS Output:\u003c\/strong\u003e Delivers 130W x 4 plus 400W subwoofer RMS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable HPF:\u003c\/strong\u003e Helps protect full-range speakers from excessive low bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable LPF:\u003c\/strong\u003e Directs low-frequency content to the subwoofer channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Bass Control:\u003c\/strong\u003e Allows convenient adjustment of subwoofer level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Protection:\u003c\/strong\u003e Protection threshold is specified at 80°C (176°F).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe STX2000.5D uses a compact enclosure measuring approximately 8.6 x 4.8 x 2 inches. Its electronics are built around a double-sided FR-4 PCB with SMT components, and the amplifier includes power and protection status indicators. The chassis should be installed in a dry location with clearance around it for ventilation.\u003c\/p\u003e\u003cp\u003eUse the +12V, ground, and remote-turn-on terminals for vehicle power connections, and connect RCA cables to the separate front, rear, and subwoofer inputs. Connect full-range speakers to channels 1 through 4 and the subwoofer to the dedicated subwoofer output, keeping connected loads at or above the stated 2-ohm minimum. Set gain conservatively, then use the HPF, LPF, and bass-boost controls to suit the speakers and subwoofer in the system.\u003c\/p\u003e","brand":"STX Audio","offers":[{"title":"Default Title","offer_id":45661704749126,"sku":"STX2000-5D","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71UzvxtfI4L.jpg?v=1784448368","url":"https:\/\/audiowatt.store\/products\/stx-audio-stx2000-5d-5-channel-class-d-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}