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Specifications

Frequency Response (+/-2 dB) 

(1 Port Open, EQ1, Q=0.7)

Frequency Response (+/-2 dB) 

(2 Ports Open, EQ2, Q=0.7)

Woofer Size 

Amplifier Power

Crossover Frequency Range

Crossover Slope

Crossover Type

Q

Phase

Dimensions (excluding feet/grille)

Ship Weight

Power Outlet Requirement

9

HSU Speaker

System Limited

Warranty

If the speaker system proves to be 
defective in materials or workmanship
within seven years from the date of the
original customer’s purchase, or the
amplifier within two years, we will, at our
option, repair or replace the defective
product. 

*DISCLAIMER

THE WARRANTY STATED HEREIN IS IN LIEU 
OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING MERCHANTABILITY
AND FITNESS FOR PARTICULAR PURPOSE AND
ALL OTHER LIABILITIES AND OBLIGATIONS
OF HSU, ALL OF WHICH ARE EXPRESSLY DIS-
CLAIMED. HSU HAS NOT MADE AND DOES
NOT HEREBY MAKE ANY OTHER REPRESEN-
TATION, WARRANTY OR COVENANT WITH
RESPECT TO THE CONDITION, QUALITY,
DURABILITY, DESIGN, OPERATION, CAPACITY,
FITNESS FOR USE OR SUITABILITY OF THE
SPEAKER SYSTEMS.

Exclusion of
Certain Damages

HSU’s liability for any defective product is
limited to repair or replacement of the prod-
uct at our option. HSU shall not be liable for
incidental or consequential damages of any
kind or character because of product defects.
Some states do not allow limitations on how
long an implied warranty lasts and/or do not
allow the exclusion or limitation of incidental
or consequential damages, so the above limi-
tations and exclusions may not apply.

This Warranty Does
Not Cover:

Damage caused by abuse, accident, mis-
use, negligence, or improper operation.

Products that have been altered or modified.

Any product whose serial number has been
altered, defaced, or removed.

Normal wear and maintenance.

Damages caused by shipping. (All claims
for shipping damage must be made with 
the carrier.)

©2010 HSU Research

Warranty Service

Warranty service must be performed by
Hsu Research or an authorized service 
center.

All warranty repairs must be accompanied
by the original bill of sales. No other 
document is acceptable or is required.
This warranty gives you specific legal rights,
and you may also have other rights which
vary from state to state.

Due to our continual efforts to improve product
quality as new technology and techniques become
available, HSU reserves the right to revise its
Speaker Systems specifications without notice.

15 Hz 

20 Hz 

15 inches

1400 w short-term, 350 w cont.

30-90 Hz, bypassable

24 dB/Oct

low pass only

0.3 - 0.7

0°/180°

25˝(h)/18˝(w)/26˝(d) 

118 lbs

430 Watts

VTF-15H

Summary of Contents for VTF-15H

Page 1: ...und in lesser subwoofers Powerful BASH amplifiers Our custom built amplifiers have ultra high headroom soft clipping subsonic filtering adjustable Q and class A B output stage to provide extremely high fidelity low distortion and high output Flexible room placement The luxurious and smooth non vinyl finishes rounded corners and edges and front firing woofer and ports allow for close placement next...

Page 2: ...particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Unplug this apparatus during lightning storms or when unused for long periods of time 12 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen i...

Page 3: ...hard drives from being erased Rules of thumb for placement Avoid the center of the room In general avoid placing the subwoofer half way between the front and back walls This is where you get a strong null from your room s standing waves You should also avoid sitting in that area No matter how powerful the subwoofer is there will not be much bass around the center of the room Use corner placement S...

Page 4: ...ord This wire is not included with your subwoofer but can be purchased at electronic or home improvement stores Strip 1 2 of insulation from each end of the wire to expose the bare metal If your speaker wire is fraying tightly twist the metal Unscrew the plastic hex nut on the binding post to insert the exposed wire into the hole Tighten the binding posts by hand Run the wires from your system s a...

Page 5: ...er to the left until you hear the subwoofer and L R speakers as separate sources Slowly turn the control back to the right until the sound of all three speakers is well integrated When using tiny front speakers that don t have much bass the 90 Hz setting on the control will probably yield the best results Your subwoofer has a sharp 24 dB octave crossover to remove upper bass and midrange from the ...

Page 6: ...0Hz when using 80Hz crossover 5 Adjust the subwoofer level so that the lower range average equals the upper range average ie if the lower range average is 5dB more than the upper range average then adjust the subwoofer level down by 5dB If your controller allows you to adjust subwoofer channel level use this to adjust the subwoofer level Otherwise simply adjust the subwoofer volume knob instead A ...

Page 7: ...r damage Also poorly shielded cables can potentially pick up noise Try another interconnect or speaker wire Also move the signal cable away from AC cables power transformers or other EMI sources Use an AC line filter or plug the unit into a different circuit If hum goes away when interconnects are disconnected the hum is coming from the rest of your equipment Add them back one piece at a time The ...

Page 8: ...from the receiver amplifier to the of the subwoofer s speaker level input Connect only to the channel that has a true ground If neither channel has a true ground e mail call technical support Increase the volume of the subwoofer and the subwoofer level or LFE level on the receiver or other source It is best to set the level of the subwoofer relative to the other speakers using a test disk and a Ra...

Page 9: ...U shall not be liable for incidental or consequential damages of any kind or character because of product defects Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limi tations and exclusions may not apply This Warranty Does Not Cover Damage caused by abuse accident mis use ...

Page 10: ...10 Notes ...

Page 11: ...11 Notes ...

Page 12: ...12 HSU Research 985 N Shepard St Anaheim CA 92806 1 800 554 0150 HSURESEARCH COM ...

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