STF-1 Subwoofer

"Sensational sub"
Sensible Sound

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The STF-1 is our most budget sensitive subwoofer to date, but that doesn't mean its a push-over. It has a high-headroom amplifier and accurate driver that exceeded the expectations of even Dr. Hsu. The narrow enclosure hides easily in a corner or behind a couch. This subwoofer represents our biggest bang for the buck. It's the easiest way to own a HSU "true subwoofer."

Industry Reviews

“Sensational sub...31.5 Hz...106dB....easily surpassed the $500 NHT SW10...as well as the $600 Velodyne CT-120...and was superior to a $500 Axiom EP-175...had no trouble eclipsing the performance of the pint-sized, $995 Sunfire True Sub Super Junior...”
Howard Ferstler, Sensible Sound (Sept/Oct 2004)

“Hsu's STF-1 is one impressive little subwoofer. It went plenty low for true home theater action, with meaningful volume all the way down to 25 Hz — a lot more than I expected. It wasn't boomy yet had me running for cover during the scene in The Italian Job when the armored truck blows through the pavement.”
Daniel Kumin, Sound & Vision (Oct 2004)

“The Hsu Research STF-1 is one hell of a $299 subwoofer...the STF-1's robustly deep bass power was impressive, and it was capable of dishing out low-frequency effects like a much larger subwoofer.”
Steve Guttenberg, CNET (April 2004)

“The STF-1 is a total overachiever. It produced louder, cleaner, deeper bass than something this small and inexpensive has any right to.”
Jeff Van Dyne, Home Theater Sound (July 2004)


Black
In-stock:Yes
Regularly:$299.00
MSRP:$375
S/H:$32
$299.00

STF-1 At a Glance

Amplifier power
150 Watts
Bass extension
32 Hz, +/- 2 dB
Woofer size
8 Inches
Crossover

Bypassable 24 dB/Oct, continuously variable 30 - 90 Hz low pass filter

Phase switch
0/180°
Dimensions
19”(h) / 11”(w) / 16”(d)
Ship-weight
35 Lbs
120/240 V Capable
Yes, switchable at the factory with internal jumper
Warranty

7 years on the woofer, 2 years on the electronics



For Owners

Owners Guide

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