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Bass Optimizer

Name: Hsu Research Bass Optimizer
Brand: Hsu Research

Hsu Research

AccessoriesDigital ProcessorsDiscontinued

Estimated price (community-sourced)

About the Bass Optimizer

The Hsu Research Bass Optimizer is a compact line-level equalizer designed specifically for older passive TN series tube subwoofers (not for VTF-TN1). It provides selectable equalization for TN1220HO or 1225HO models, a 12 dB/octave infrasonic filter (15 Hz for EQ1, 22 Hz for EQ2), level control, and stereo/mono bass selection. It enables flat extended bass and protection from infrasonics when using external amplifiers rated at 200W at 4 ohms, paired with low-pass crossover from receiver or preamp. Setup involves feeding subwoofer line-level signal into the optimizer, then to the amplifier. It is no longer necessary for current powered subwoofers.

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