8

Problem

Cause

Solution

 

 

 

 

 

 

 

 

The subwoofer is not receiving a

• Recheck the connections between the source and the subwoofer.

 

 

 

signal.

 

No output from the

 

 

 

• With the volume on the subwoofer turned to a low setting, try

subwoofer

(LED

 

plugging the subwoofer directly into a CD player or lightly touching

lights up red).

Subwoofer amplifier is faulty.

the unplugged end of the input cable. If you hear noise from the sub-

 

 

 

woofer, the problem is with your connection to the system. If you

 

 

 

 

hear no noise, try turning the volume on the subwoofer up some more.

 

 

 

 

If you still hear no noise, contact your dealer or call/e-mail technical

 

 

 

 

support for authorization to send the amplifier back for service.

 

 

 

 

 

 

 

 

Connection between subwoofer

• Return the subwoofer to the dealer or contact HSU Research.

No output from the

amplifier and woofer is faulty.

 

 

 

subwoofer

(LED

 

 

turns green).

 

Driver or amplifier is faulty.

• Return the subwoofer to the dealer or contact HSU Research.

 

 

 

 

 

 

 

 

 

 

 

You used speaker level connections

• Correct the polarity of the speaker wires by matching the +/- from

 

 

 

and have mixed up the polarity of

Little or no sound

the wires, thus shorting one channel

the receiver/amplifier to the +/- of the subwoofer’s speaker level input.

of the main amplifier.

 

from

one

main

 

 

speaker..

 

 

 

 

You used speaker level connections

• Connect only to the channel that has a true ground ‘ - ’. If neither

 

 

 

 

 

 

and one or both your main amplifier’s

channel has a true ground ‘ - ’, contact your dealer or e-mail/call

 

 

 

‘ - ’ are not true ground.

technical support.

 

 

 

 

 

 

 

 

 

• Increase the volume of the subwoofer and the subwoofer level or

Bass output

from

Level on subwoofer or receiver’s

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

subwoofer is low.

subwoofer output is too low.

a Radio Shack SPL meter, or built-in tones on your pre-amp/pro-

 

 

 

 

 

 

 

 

cessor. See “Volume Level” in Step 4.

 

 

 

S u b w o o f e r

Noise is being generated by up-

• When you shut down your equipment, turn off the subwoofer first.

thumps when the

system

is

being

stream equipment.

When powering up, turn on the subwoofer last.

turned on and off.

 

 

 

 

 

 

 

Repair

If your unit needs service, please re-review the troubleshooting section first.

Contact your dealer or call tech support at 1-800-554-0150 9am to 5pm Pacific time, Monday through Friday.

We will try and respond to emails sent to techsupport@hsuresearch.com within two business days.

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Hsu Research VTF-2 manual Repair, Led
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VTF-2 specifications

The Hsu Research VTF-2 is a high-performance subwoofer that represents the pinnacle of audio engineering excellence in home theater and music playback. Known for its deep bass response and exceptional sound quality, the VTF-2 is designed to deliver an immersive audio experience that can transform any room into a captivating listening environment.

One of the standout features of the VTF-2 is its dual-driver design, which employs a 12-inch polypropylene cone woofer and a pair of high-excursion drivers. This configuration allows the subwoofer to produce powerful low frequencies while maintaining accuracy, ensuring that even the most subtle audio nuances are clearly articulated. The VTF-2 is capable of achieving a frequency response range as low as 20 Hz, making it well-suited for both music and film applications.

The VTF-2 incorporates advanced technologies that contribute to its outstanding performance. One such technology is the variable tuning feature, which allows users to switch between two different tuning options: a sealed and a ported configuration. This versatility enables users to tailor the subwoofer's output to match their specific room acoustics and personal preferences, providing flexibility in setup options.

Additionally, the VTF-2 is built with a robust cabinet construction, utilizing high-quality MDF (medium-density fiberboard) to minimize resonance and enhance sound clarity. The sleek, modern design of the cabinet is both attractive and functional, featuring a front-firing port to optimize placement in various environments without compromising audio quality.

Another notable characteristic of the VTF-2 is its powerful internal amplifier. Designed with efficiency in mind, this amplifier delivers 350 watts of continuous power and peaks up to 700 watts, providing ample headroom for dynamic audio playback. The integration of high-grade components ensures reliability and longevity, making the VTF-2 a worthwhile investment for serious audiophiles.

In summary, the Hsu Research VTF-2 subwoofer combines innovative technologies, such as dual drivers, variable tuning, and a powerful amplifier, within a sturdy and attractive cabinet. These features collectively enable it to produce unparalleled bass performance and precise audio reproduction. Whether used in a home theater or a dedicated music listening room, the VTF-2 is engineered to exceed expectations and create an engaging listening experience.
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