Connections

Loudspeaker connectors

The KLAB-B1 speaker connections use screw terminals and can be plugged and unplugged from the board for ease of installation. Each loudspeaker can be rated at 4ohm, 8ohm or 16ohm. Take care to ensure that both the left and right phase connections are the same. For example if you’ve connected the left speaker positive to “+” make sure that the right speaker positive also goes to “+”. In order to make a reliable and safe connection without short circuits it is recommended that the speaker cables are prepared and tinned prior to connection, with no more than 1⁄4” or about 7mm of tinned wire extending out of the insulation. Please note that the amplifier is fully bridged so there is NOT a common ground or return connection. 

Auxiliary input

The 3.5mm jack socket can be used as another audio source for the amplifier. The bluetooth connection always takes priority so bluetooth device must be disconnected and the KLAB in standby (constant red LED) before the line input will be activated. It is monitored on signal level so the amplifer will automatically power up and operate whenever audio is detected. If the signal is disconnected or muted for more than 30 seconds the amplifier will revert to standby.  If the line input is in use and a bluetooth connection is established the amplifier will switch to the bluetooth source. The gain of the aux input can be adjusted independantly of the bluetooth via the KSAS page.

DC input

The amplifier requires a power supply of 12v to 24 DC centre positive and a minimum current of 2000mA. 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 directly 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.