Troubleshooting

7

If you think your subwoofer has a problem, please do everything you can to confirm the problem before contacting your dealer or calling for service, including reading through the troubleshooting section. Many times the problem actually is caused by other items in the system or the subwoofer’s interaction with those items. Much of the time, the service department will not be able to reproduce the error.

Problem

Cause

 

Solution

 

 

 

 

 

 

You have an amplifier problem.

•

Disconnect all interconnects from the amplifier. If still

 

 

hums, contact your dealer or call/email technical support.

 

 

 

 

 

 

 

 

 

•

It is possible that some cables have a poor or broken

 

Your speaker wires or interconnects are

 

ground due to poor construction, oxidation, or damage.

Humming or

 

Also, poorly shielded cables can potentially pick up

the cause.

 

noise. Try another interconnect or speaker wire. Also,

buzzing noise

 

 

 

move the signal cable away from AC cables, power

 

 

 

 

 

 

transformers, or other EMI sources.

 

 

 

 

 

 

A light dimmer or other triac based (SRC)

• Use an AC line filter or plug the unit into a different circuit.

 

device is on the same AC circuit.

 

 

 

 

 

 

 

 

 

 

•

If hum goes away when interconnects are disconnected,

 

You have a problem with other equipment.

 

the hum is coming from the rest of your equipment.

 

 

Add them back one piece at a time. The one that causes

 

 

 

 

 

 

the system to hum is the source of the hum.

 

 

 

 

 

 

 

•

The unit is going into STANDBY mode during the quiet

Subwoofer goes into

 

 

passages. Try turning the source signal up. On a Dolby

STANDBY mode

 

 

Digital receiver, turn the SUBWOOFER level up in the

while material is

 

 

SPEAKER SET-UP menu. After you turn the signal up, turn

playing.

The source is not providing enough signal.

 

down the volume knob on the subwoofer to compensate.

 

 

 

 

 

 

•

An alternative is to turn the subwoofer ON/AUTO/OFF

 

 

 

switch to the ON position. It does not use any more

 

 

 

power and does not affect reliability.

 

 

 

 

 

• Check that the power cord is plugged in securely at both

 

AC power is not getting to the amplifier.

 

ends and make sure that the power outlet the subwoofer

 

 

 

is plugged into is working.

No output from the

 

 

 

 

subwoofer (the LED

 

 

 

 

 

 

 

 

does not light up).

 

• Check the fuse. The fuse is located on the amplifier, near

 

 

 

 

 

the power plug. Unplug the power cord and remove the

 

The amplifier’s fuse is blown.

 

fuse holder with a flat head screwdriver. If the fuse is

 

 

blown, the output transistors are probably damaged.

 

 

 

 

 

 

Contact the dealer or call/e-mail technical support for

 

 

 

authorization to send the amplifier back for service.

 

 

 

 

 

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Hsu Research VTF-2 manual Troubleshooting, Problem Cause Solution
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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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