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http://www.libertyacoustics.com
Follow instructions -
All operating and use instructions should be followed.
Cleaning -
Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for
cleaning.
UNPACKING
The LA-SUB series subwoofer is heavy.
(24 Kgs for LA-SUB10; 28 Kgs for LA-SUB12)
For the sake of your health, ask people to assist
you in lifting and carrying the subwoofer around. Get help from a family member or friend if this product is not installed by a
professional person.
The best way to remove the speaker from the carton is to open the top of the carton, roll it over with the flaps folded out and pull the carton
off, leaving the speaker in its protective polyethylene foam. Pull one foam frame off one at a time and lower the speaker to the floor carefully.
Remove the poly bag and keep it out of the hands of children and babies as it can cause suffocation.
GETTING STARTED
OVERVIEW
The LA-SUB series Subwoofer is an active loudspeaker. In other words, it has a built-in power amplifier to boost the signal level.
Therefore, there is no need for an external power amplifier to drive it. In addition, the LA-SUB series Subwoofer has a
complex filter circuit which boosts sub-sonic frequencies and is adjustable to allow it to be matched to different room sizes, shapes
and user requirements. The rear panel controls provide a range of adjustments for this purpose.
The LA-SUB series subwoofer is designed to extend the low frequency response of both 2 channel and multi- channel systems, which each
demand a very different tonal balance. This is described later, but control adjustment and placement in the listening room is
important, so please read these instructions carefully for best results.
QUALITY
The LA-SUB series subwoofer has a powerful driver unit. Model SUB 1 and SUB 2 are fitted with 8”
(210mm) and 10" (254mm) loudspeaker drivers respectively with enough magnet strength and
voice coil size to handle very high power levels for long periods without distress. Its cone
diaphragm is very stiff to keep distortion and coloration to a minimum. The rubber suspension
surround is quite stiff, which also helps to reduce d i s t o r t i o n and low frequency over-hang.
To further boost the fidelity of the LA-SUB series subwoofer, it has a very stiff cabinet made
with
20mm or 25mm MDF
for the respective models. In short, the LA-SUB series
subwoofer is capable of extending frequency response of a stereo system of any quality or
price.
INSTALLATION AND SETUP
LA-SUB series subwoofers are factory pre-set in mains voltage. Make sure that subwoofer
purchased is of mains voltage appropriate to where you are applying it for us. Power cord
supplied should also be appropriate to local standard applicable for your mains supply socket.
If in doubt, do not proceed until you have contacted your dealer for advice or assistance.
Positioning the subwoofer is important if the best results are to be achieved. Place the subwoofer
where it can be connected easily to the mains power supply and to the output of the receiver or
stereo amplifier used for the rest of your system. Whilst this would normally be close to the
system, be prepared to move it around the room to gain the best results.
The Liberty Acoustics LA-SUB series subwoofer is a ‘down-firing’ speaker that is supported by
four m e t a l s p i k e s t o h o l d i t 50mm above the floor when t he r ings are scre wed
t igh tly wi th the spike s . The overall height of space beneath the cabinet is adjustable to a
maximum of 5mm more by turning the spikes to the desired height, and to make them fixed by the
rings.
The mains supply can be left connected as it has a low current standby condition which is enabled when no signal is present for a short while.
Four pieces of 50mm-high carpet spikes are supplied with the subwoofer. The spikes can be adjusted to level the speaker and dig deep into
carpet to provide mechanical de-coupling of the device into the floor. Metal floor protectors are also supplied to prevent damage to
wooden flooring, if required.
In the case of a multi-channel system (5.1), connect a shielded cable from the sub-sonic (LFE) output of your receiver to the RCA jacks on
the back of the LA-SUB series subwoofer marked line in. You will note that there are two low level input sockets marked L & R, which allow
for a stereo signal from your receiver or amplifier.
The specially designed summing circuitry in the LA-SUB series subwoofer combines the L&R low level input signals internally without
forcing the source signal into mono.
Set all the controls to the middle position and switch on the LA-SUB series subwoofer using the switch marked POWER. A small LED indicator
above the switch will light if everything is OK.
SUBWOOFER CONTROLS
You are now ready to set-up the system using the user guide or instructions from your receiver or DVD player. The sound balance can be
adjusted with the controls on the rear panel of the LA-SUB series subwoofer.