Hsu Research VTF-2 manual Repair, Led

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.