Klipsch KSW-150 Powered Subwoofer
The KSW-150 was a powered subwoofer, a bass-reflex design built around a side-firing 10-inch fiber-composite cone driver and a front-firing port. Its amplifier was rated at 150 watts continuous (FTC) with 300 watts of dynamic power on tap. The manual specifies frequency response of 32 Hz to 120 Hz (±3 dB), with a continuously variable crossover from 40 to 120 Hz using a true 24 dB/octave low-pass filter. The crossover could be defeated via a front-panel switch for use with Dolby Pro Logic or AC-3 processors in "subwoofer" mode.
Connectivity was typical for the era: line-level RCA inputs (left/LFE and right), plus speaker-level inputs and outputs with spring-loaded connectors. The speaker-level outputs were high-pass filtered at 100 Hz. A rear-panel phase switch offered 0° or 180° settings. The cabinet came in black laminate and measured roughly 14.25 × 13 × 15.3 inches, weighing in at 40 pounds per the manual.
Period directory listings in HiFI-Stereo (1999, p.173) described it as a bass-reflex design with a down-firing 10-inch driver and a 150-watt amp, noting three line-level inputs and two speaker-level inputs. No production years or original price have been documented, and the archival record is otherwise thin — no period reviews with measured performance, no known-issues notes, and no market context survive.
Known specifications from the manual:
- Amplifier: 150 watts continuous FTC, 300 watts dynamic
- Driver: 10" (25.4 cm) side-firing, fiber-composite cone
- Enclosure: bass reflex, front-firing port
- Frequency response: 32 Hz – 120 Hz (±3 dB)
- Crossover: 40–120 Hz continuously variable, 24 dB/octave low-pass, defeatable
- Inputs: line-level (Left/LFE, Right RCA); speaker-level (spring-loaded)
- Outputs: speaker-level (spring-loaded); high-pass filtered at 100 Hz
- Phase switch: 0° / 180° (rear panel)
- Finish: black laminate
- Dimensions: 14.25" × 13" × 15.3" (H × W × D)
- Weight: 40 lbs (18.1 kg)
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