Dan:
Taken from our FAQ page:, and yes the DH Labs Subsonic would be an excellent cable for your needs . . . you might want to make sure it is actually the cable first:
If you have a problem with hum there are generally three possible causes:
1. Ground loops are the most common cause of subwoofer hum. Turn everything off and remove all connections from the sub to the rest of the system. Turn the sub back on. If the hum is still there, it might be a problem with the sub or a bad cable. If the hum is gone, the problem is probably caused by a ground loop elsewhere in the system, or improperly connected household wiring.
2. Poor connections or RCA interconnects can cause hum. If you move the shielded cable that connects the sub to your system and you hear a change in the hum it is likely you have poor shielding or a defective RCA plug. Replace the cable.
3. Amplifier damage is the least likely cause of hum. However, if you have ruled out ground loops or a defective connecting cable, it is possible that there is a problem with the amplifier in your sub. See the following
