derrick929 Posted December 28, 2001 Share Posted December 28, 2001 Was wondering if anyone knew why I would be getting feedback from my sub after I turn off my receiver. Have the front two speakers wired through the speaker level inputs on the sub and the sub output from receiver going into the sub. Tried it without the sub.output from the reciver disconnected and it still does it. It starts what sound like a humming or fluttering, pretty impressive, shakes the walls and windows. The auto on won't work and the signal is very low if you just connect the sub output from the receiver. The only way to get any volume out of it is to connect the front channel through it. Any ideas? Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 28, 2001 Share Posted December 28, 2001 I don't know what to say, other than turn the sub amp first before the receiver. Hopefully somebody else can understand what's up here. Quote Link to comment Share on other sites More sharing options...
bacevedo Posted December 28, 2001 Share Posted December 28, 2001 I wouldn't be surprised if the RCA inputs are bad. You should have a lot more output from the RCA inputs. I had a KSW 12, and I know 2 people with the KSW 15, and none of them exhibited this behavior. We had them all hooked up through the RCA inputs only. Try to exchange it for a different one and see if you have the same problems. What receiver do you have? Bryan ------------------ "... But Honey - I promise this is the last thing I will have to buy for the Home Theater" Mistubishi VS60603 60" RPTV Denon AVR 3802 Receiver Denon DVM 1800 DVD Changer JVC 3600U SVHS VCR RCA DirecTV Satellite Tuner Klipsch RB5 - Mains Klipsch RC3 - Center Klipsch RCW3 - In-wall Surrounds Velodyne SPL1200 Subwoofer Monster HTS1000 Power Conditioner Acoustic Research Pro Series Interconnects Quote Link to comment Share on other sites More sharing options...
KGeist Posted December 28, 2001 Share Posted December 28, 2001 This question has been covered in the past, so I'm not going to go in much detail here... Your problem is due to the fact that with the electronics "OFF", the main loudspeakers are acting like a microphone and feeding signal (noise) to the speaker level inputs on the subwoofer. This can cause feedback if the subwoofer is located to close to one of the main loudspeakers. There are two solutions. One is to simply position the subwoofer further away from the main speakers. The other is to use the line level inputs on the subwoofer. This takes the subwoofer out of the same signal path as the mains. Kerry Quote Link to comment Share on other sites More sharing options...
derrick929 Posted December 28, 2001 Author Share Posted December 28, 2001 I have a cheap subwoofer patch cord now, I know it is not that great but I don't know how much a better one would help. I have a JVC RXV 9000 VBK receiver powering everything. Would a high dollar sub cable make the auto on and off work properly?? Thanks everyone. Quote Link to comment Share on other sites More sharing options...
Craig6519 Posted December 28, 2001 Share Posted December 28, 2001 Does the JVC have an LFE output on it? I assume it does, why do you have the 30's wired through the sub? The 30's have a lot of bass by themselve's. Try hooking the sub to the LFE and run the 30's by themselve's. Craig Quote Link to comment Share on other sites More sharing options...
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