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I didn't have proper cabling for the BFD, so I made some up from old parts. The connection from amp to BFD is constructed as per #17 in Rane's system interconnect guide displayed in post #2 of mississippi-xj's BFD hum thread. The connection from BFD to sub is a 1/4" stereo jack to rca plug. I tried it with the sleeve open and then I tried the sleeve shorted to the ring.
The BFD has a very slight hum with no connections that can be heard when you are within a foot or two of it. Not enough to bother me. When connections are made and the sub turned on, the sub hum is definitely noticeable and annoying. Powering on the receiver causes the sub hum to increase to a room filling loud buzzing.
Usually ground loops are investigated first. Rane #17 has the ground lifted at the unbalanced end. I tried the connection to sub with the sleeve open. Both sub and BFD are on cheater plugs and the receiver has 2 prong power plug. Receiver powered on amplifies the buzz considerably.
Any ideas?
The BFD has a very slight hum with no connections that can be heard when you are within a foot or two of it. Not enough to bother me. When connections are made and the sub turned on, the sub hum is definitely noticeable and annoying. Powering on the receiver causes the sub hum to increase to a room filling loud buzzing.
Usually ground loops are investigated first. Rane #17 has the ground lifted at the unbalanced end. I tried the connection to sub with the sleeve open. Both sub and BFD are on cheater plugs and the receiver has 2 prong power plug. Receiver powered on amplifies the buzz considerably.
Any ideas?