Hi, is it a humming noise ??? check if the connector is plugged in properly,check the earthing, if its a three pin mains plug, if its a two pin, then the CPU SMPShave a proper eathing. let me know
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The Yamaha YST-SW315 subwoofer power amplifier is designed specifically for use with the YST-SW315 subwoofer. It may not be compatible with other subwoofers or audio equipment due to differences in impedance, power requirements, and signal levels.
If you no longer have the YST-SW315 subwoofer, it is not recommended to use the power amplifier for other purposes. It is important to match the amplifier with the appropriate load (speaker) and signal source to avoid damaging the equipment or creating a safety hazard. Using the amplifier for other purposes may also void any warranty or insurance coverage.
Feed it with an RCA cable any other audio device you may have (CD, TV, MP3 player, PC) to prove it can or can not woof. It will respond to any audio, not just LFE or subwoofer audio.
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