Canton SUB 12.2 Owners Manual - Page 35
Problem, Possible cause, Solution - test
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ENG Problem Subwoofer does not turn on Subwoofer does not switch off Subwoofer hums Subwoofer does not respond to remote control Possible cause 1. The power cable is not connected from the socket to the subwoofer 2. The power has not been turned on 3. The switch for automatic switching on is not in the "ON" position or the "AUTO" or "AUTO HIGH" positions 4. The subwoofer is not connected with the amplifier (receiver) through its speaker outlet (High Level) or subwoofer outlet (cinch) cable 5. Defective signal line (cinch) 6. The volume of the amplifier has been set too low 7. With a "Dolby Digital" receiver (amplifier): the receiver is not set for subwoofer operation (operating method "Small" or "ActiveSub = On") 8. The outlet level on the amplifier is set too low for the subwoofer outlet (cinch outlet) 9. The microfuse in the subwoofer has blown (fused) 1. Switch for automatic switching on (Standby) set to "ON" 2. Constant humming at inlet of subwoofer 1. Signal line from amplifier to subwoofer too long 2. Signal line used is not fault-protected or the protection has been damaged (defective) 3. Ground loop (ripple pickup) generated 4. Another piece of equipment on the same circuit has no interference suppression (e. g. fridge) 1. The battery is flat 2. The remote control is not registered on the subwoofer Solution Check connection Switch to "ON" Check switch setting Check connection Test with another cinch cable and change cable if necessary Increase volume level to test Check operating mode Increase the outlet level of the amplifier Get a specialist to change the microfuse Switch to "Auto" or "OFF" Use a shorter signal line from the amplifier to the subwoofer or remove any possible sources of interference (see "Subwoofer hums") Use shorter signal line Change signal line for a fault-protected line A ground loop can be generated when two or more devices connected via a signal line (cinch) are plugged into separate sockets (e. g. amplifier and computer). All devices connected to the amplifier should be plugged into the same multiple socket outlet Switch off possible sources of interference to test; unplug the device concerned to see if the humming noise disappears or connect the source of interference to a different circuit (L1, L2 or L3). (Where necessary take advice from your electrician.) Insert a special "ferrite common mode filter" (available from specialist retailers) between the amplifier and the subwoofer to eliminate the humming. Disconnect and rotate the mains plug to reduce the so-called ripple voltage. (Particularly important if the amplifier is not earthed) Change the battery Turn the subwoofer off, wait for 30 seconds then turn it back on. Activate the remote control and press the "- Phase", "+ Phase" and "Power/Auto" buttons in quick succession. The subwoofer and the remote control are now synchronised 35