No Sound From Tx-8Sub / Tx-10Sub; Boomy, Dull, Out Of Focus Low Frequencies; 50/60 Cycle Hum Coming From The Subwoofer - Crystal Acoustics TX-8SUB Owner's Manual

6.5 No sound from TX-8SUB / TX-10SUB

> Make sure your TX-8SUB / TX-10SUB is plugged into an AC outlet
> Make sure the Subwoofer Y/N option is set to Yes in your receiver or processor's
speaker setup menu
> Make sure the volume control is not set to Minimum
> Make sure your subwoofer interconnect is functioning properly and replace any
defective cables

6.6 Boomy, dull, out of focus low frequencies

> Try moving your subwoofer away from corners or walls in small steps
> The boom results from exciting room resonances
> Small changes in position can make a big difference

6.7 50/60 cycle hum coming from the subwoofer

Your TX-8SUB / TX-10SUB is reproducing ground loop hum from elsewhere in your system
> Make sure interconnect and speaker cables are routed away from AC power cords and
component power supplies to avoid induced hum
> Cross interconnects at 90 degrees to AC power cords and keep them separated by at
least an inch. Also connect the power cord of your TX-8SUB / TX-10SUB and receiver/
processor and multi-channel amplifier to the same AC outlet to keep the grounds
all at the same potential avoiding hum
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