Section 8
System Protection
Because accidents happen, this subwoofer system is
equipped with a protection limiter to prevent the amplifier
from operating in a sustained clipping condition, or at a
level that may cause damage to the woofer due to over-
excursion. Because the subwoofer amplifier has a limiter,
there isn’t a clip light on the amplifier to indicate when it is
in distress. This protection system does allow the woofer
to deliver its rated peak SPL (Sound Pressure Level) of
114 dB without compromise. If a bass drum, or bass gui-
tar doesn’t get any louder when you turn it up, and is
starting to sound squashed or flat, then you are probably
operating into the limiter. If you are finding that you are
operating into the limiter on a regular basis, you need to
consider two or more subwoofers within the system.
The subwoofer is a compact device, which allows the unit
to be easily placed where it can provide optimum per-
formance. As part of the placement process, the perform-
ance can be fine tuned by adjusting the user controls pro-
vided. You only have to do this the first time you set your
system up. Once the balance is set between the sub-
woofer and the main speakers, the installation is complete.
The general rule for placement is between the left and
right channels in a two channel system, or under the cen-
ter channel in a 5.1 or other surround system.
Section 9
Care of the Subwoofer
The subwoofer is finished with a vinyl covering that
resists most liquids, and can be cleaned with a damp
cloth, or a mild cleaner like Windex
TM
. Avoid wetting the
bass unit cone material during any cleaning effort. It
would be preferable that if you try to keep friends and
neighbors from placing beverages on the subwoofer.
Do not place the unit near a heater or forced air outlet, as
this may impair the ability of the internal amplifier to dissi-
pate heat and may harm the finish. The unit requires ade-
quate air volume or space around it to function properly.
No sound comes out
A.
Check that the unit actually powers up, look for the
green LED. If not, check that the AC outlet is live by using
a voltmeter, a circuit tester, or a lamp. If there is no power
at the wall, consult a qualified electrician.
B.
If the AC outlet is live, and the amplifier is still not pow-
ered, double check that the power switch is in the ON
position.
C.
If the unit is still not powered up, unplug the unit.
Remove and test the fuse on the rear control panel with a
continuity tester. If blown, replace with a new fuse of the
same specified value.
D.
If the unit still refuses to power up, contact your dealer
or local Tannoy distributor.
If the unit is powered up and no audio comes out.
A.
Check the Master Level Gain Control, to ensure that it
is in the position you expect it to be.
B.
Make sure there is input signal at one of the LCR or
LFE inputs.
You are only getting signal through the LFE input.
A.
Ensure that you are getting signal to the LCR inputs by
exchanging the LFE input with one of the LCR inputs.
B.
If the Remote By-pass Cable is plugged into the
Remote By-pass jack, make sure the switch is in the Bass
Management position (-).
C.
If the Remote By-pass Cable is plugged in and the
switch is in the (-) Bass Management position and no sig-
nal is coming out of the LCR inputs, disconnect it from the
amplifier panel. If audio passes through, the Remote By-
pass Cable has a fault. If audio does not pass through
after disconnecting the Remote By-pass Cable, contact
your dealer or local Tannoy distributor.
Distorted sound comes out
A.
Is the subwoofer bass the only distorted sound, or are
the main speakers distorted too? Check the signal quality
at the subwoofer input by connecting the signal cables
directly into the main speaker amplifier.
B.
If the sound is still distorted with only the main speak-
ers on, the problem is in the source. If the distortion is
eliminated by connecting around the subwoofer, test the
cables from the subwoofer to the main speaker amplifier.
C.
If the subwoofer is the only distorted sound, determine
if it is distorted at any level setting. If it only happens at
high output levels, then it may be that you are overload-
ing the input to the limiter. If you have eliminated the pos-
sibility of bass distortion in the source material, and con-
firmed that the unit is not being over-driven, contact your
dealer or local Tannoy distributor.
Section 10
Troubleshooting
If you’re reading this, it is because of some unfulfilled
expectation for having sound come out of your new pow-
ered subwoofer. Let’s see if we can go over some of the
easy ways to remedy problems.
