{"product_id":"stx-audio-stx1500us-10-inch-amplified-subwoofer","title":"STX Audio STX1500US 10-Inch Amplified Subwoofer","description":"\u003cp\u003eThe STX Audio STX1500US is a compact amplified subwoofer designed to add low-frequency reinforcement without requiring a separate external amplifier or a large subwoofer enclosure. Its integrated 10-inch woofer and built-in amplifier make it a practical option for vehicles with limited available space. The slim 68 mm profile is intended for installations beneath a seat or in shallow cargo-area locations.\u003c\/p\u003e\u003cp\u003eThis model is suited to drivers who want more bass from a factory or aftermarket audio system while keeping the installation footprint compact. It provides both high-level and low-level input sensitivity options, allowing it to work with many OEM speaker-level outputs and aftermarket RCA-equipped receivers. That flexibility can simplify upgrades where changing the head unit is not desired.\u003c\/p\u003e\u003cp\u003eThe STX1500US is specified with a 55 Hz to 20 kHz frequency response, a signal-to-noise ratio above 90 dB, and total harmonic distortion below 0.4%. Its adjustable low-pass filter lets the installer select a crossover point from 50 Hz to 150 Hz. This helps blend the subwoofer with the vehicle's existing speakers rather than allowing bass output to overlap excessively with them.\u003c\/p\u003e\u003cp\u003eFor tuning flexibility, the built-in bass boost control adjusts from 0 to +24 dB. A 20 Hz subsonic filter is also specified to reduce amplification of extremely low frequencies. These controls allow the system to be tailored for the vehicle, source unit, and listener preference.\u003c\/p\u003e\u003cp\u003eThe STX1500US is an all-in-one bass upgrade for space-conscious car audio systems. Its listed 4-ohm woofer, integrated amplification, and selectable input connection methods support use in a range of basic audio-system upgrades. Proper level setting and crossover adjustment are important for balanced integration with full-range speakers.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Amplifier:\u003c\/strong\u003e Combines the subwoofer and amplifier in one compact enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-Inch Woofer:\u003c\/strong\u003e Provides dedicated low-frequency reinforcement in a slim-format design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Low-Pass Filter:\u003c\/strong\u003e Selectable 50 Hz to 150 Hz crossover tuning supports system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Bass Boost:\u003c\/strong\u003e Offers 0 to +24 dB adjustment for bass-output tailoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Input Compatibility:\u003c\/strong\u003e Supports high-level and low-level source connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 Hz Subsonic Filter:\u003c\/strong\u003e Helps limit amplification of extremely low-frequency content.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe STX1500US uses a slim integrated enclosure measuring 345 x 262 x 68 mm. Its compact form factor combines the 10-inch woofer and built-in amplifier in a single assembly, reducing the need to find mounting space for separate components. Specific enclosure and cone materials were not confirmed in the available product information.\u003c\/p\u003e\u003cp\u003eChoose a secure, ventilated mounting location with adequate clearance for the enclosure and wiring, such as an appropriate under-seat or shallow cargo-area space. Connect it using the input type that matches the source unit: high-level input for speaker-level outputs or low-level input for compatible preamp outputs. Set the low-pass filter and bass boost conservatively at first, then fine-tune levels to complement the vehicle's main speakers.\u003c\/p\u003e","brand":"STX Audio","offers":[{"title":"Default Title","offer_id":45663851085894,"sku":"STX1500US","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71ilF4l3iyL.jpg?v=1784449605","url":"https:\/\/audiowatt.store\/products\/stx-audio-stx1500us-10-inch-amplified-subwoofer","provider":"Audio Watt Store","version":"1.0","type":"link"}