AI-generated approximation — not official manufacturer imagery.

ULS-15

Name: Hsu Research ULS-15
Brand: Hsu Research

Hsu Research

ULS Series2008 – 2015

LoudspeakersSubwoofersPowered LoudspeakersDiscontinued

Estimated price (community-sourced)

$700

About the ULS-15

The Hsu Research ULS-15 (original version) is a sealed 15-inch powered subwoofer using a 1000 W short-term BASH amplifier, designed for deep, clean bass in music and home theater systems. It features a 15-inch driver in a sealed enclosure, with a bypassable low-pass crossover adjustable from 30 Hz to 90 Hz at 24 dB/octave, balanced XLR, RCA line-level, and speaker-level inputs, and was among the first subs to offer multi-channel RF wireless connectivity as an option. Hsu's published specs for the original ULS-15 list bass extension to about 15 Hz at -1 dB, emphasizing very low-frequency capability and excellent transient response for both music and movies. The cabinet measures roughly 18" H x 18" W x 19.25" D with a weight around 80 lb, offered in a satin black finish.

Specifications

Key Specifications

Frequency: 20-200 Hz

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