Stereo Integrity 18 HT Build

The Stereo Integrity HT‑18 is a highly regarded 18‑inch home‑theater subwoofer driver known for delivering deep, powerful, and clean low‑frequency performance at an exceptional value. Designed originally as an affordable high‑displacement driver, the HT‑18 features a 750‑watt RMS power rating, Dual 2‑ohm voice coils, and a recommended sealed enclosure of 4.0 ft³, making it ideal for both dedicated theaters and large‑room bass reinforcement. Its low 23 Hz resonant frequency, generous 25 mm Xmax, and large 1190 cm² cone area allow it to produce substantial low‑end output with smooth response and low distortion. Although now out of production, it remains a favorite in DIY home theater builds due to its impressive performance‑per‑dollar ratio.