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Overview
The Keene KLAB20DB is a compact, powerful stereo
amplifier built onto a standard size UK double gang
wall plate. It provides 20W (RMS per channel) of
amplification eliminating the need to make space for a
conventional amplifier. It draws it's own power from an
externally located mains adaptor and can be
controlled by push buttons integrated into the front
panel membrane and also by infra red remote. It can
be switched between four audio sources; an
integrated FM radio, rear line inputs, bluetooth and a
front panel 3.5mm jack input. The amplifier uses class
D digital circuitry for maximum efficiency and
generates very little heat. The amplifier only requires
25mm depth and so may be either flush or surface mounted.
Installation & Connection
Installation should only be carried out by a qualified installer or electrician, as a certain amount of
electrical knowledge is assumed.
Mounting
The 25mm depth will allow installation into standard UK 2-gang boxes, which may be galvanised
metal for installation in solid walls, or plastic drylining (with lugs) or surface mount box or trunking
system.
IMPORTANT - Please Read!!!
The front panel membrane has two tabs that can be flexed outward
to allow access to the panel fixing screws. Once fastened in position
and tested the backing paper can be peeled off and the tabs fixed
down flush to conceal the screws. ONLY perform this operation
once the installation has been tested and found to be satisfactory.
Once stuck down these tabs cannot be removed without damage to
the front panel.
Replacement front panels are available, (part number KLAB20DBFP)
Wiring
In order to make a reliable and safe connection without short circuits it is recommended that the
speaker cables and line input signal cables are prepared and tinned prior to connection, with no
more than ¼" or about 7mm of tinned wire extending out of the insulation.
Power
The amplifier requires a power supply of 12v to 18v DC centre positive and a minimum current of
3500mA. If you are not using the recommended psu please verify that the supply is correct BEFORE
connection. If using the recommended supply we suggest that it is connected in accordance with
current wiring regulations. The amplifier can also be powered from a 12v car battery but NOT di-
rectly from a car battery charger as this would damage the circuitry. Do not install near any heat
sources such as radiators, stoves, or other apparatus that produce heat. The mains connection
should be via a fused and switched mains outlet such as order code SWL1.
Environment
The KLAB20DB is not IP rated for use in a damp environments but if due care is given to positioning
of the amplifier and supply then it can be used in zone 3 installations. Please use a qualified electri-
cian operating to current regulations if you intend to use this unit in a bathroom.
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Summary of Contents for Keene KLAB20DB
- Page 1 Environment The KLAB20DB is not IP rated for use in a damp environments but if due care is given to positioning of the amplifier and supply then it can be used in zone 3 installations. Please use a qualified electri-...
- Page 2 Installation continued.. Connections for Power, Line Input and Loudspeaker Outputs are located on the rear PCB. Right speaker Left speaker connection connection DC input 12-18v Line input 3500mA terminals (as viewed) + Right Pre-amp line - Right Reserved for FM aerial output for use programming - Left...
- Page 3 Operation. Front panel overview Stores the current radio Seeks up to the next station to the current radio signal. location. Switches between Switches between Bluetooth, radio, PCB stored radio stations. line input and jack Mutes the output. Volume up. Volume down. Switches between standby and on.
- Page 4 (above/below mute) will adjust the levels. To exit setup procedures press F2 again. To store the current settings to memory so they will be saved when the KLAB20DB is switched off and on again exit setup mode by pressing F2 and then press F4. Note - setup mode will be exited automatically (without storing) if no key is pressed within four seconds.
- Page 5 Factory Reset - Bluetooth ID - FM Radio presets The factory reset procedure will restore all settings to factory default including any changes that have been made to stored radio stations, balance, treble, bass and loudness. The reset will also affect the Bluetooth ID and the preset FM radio stations.
- Page 6 3.5mm stereo jack to 3.5mm stereo jack front panel input cable 1.2M [KLDE6] Loudspeaker cable 42 strand OFC [KBL31] Additional remote control [KRC1] Old Hall Mills Business Park Little Eaton Derbyshire DE21 5DN Telephone 0870 990 9000 Fax (01332) 830551 http://www.keene.co.uk http://www.syncblaster.com...