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 (vinyl), (On Sale Now)
In-stock:Yes
Regularly:$299.00
MSRP:$375
S/H:$35
$269.00

STF-1 At a Glance

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