Emile Posted December 26, 2019 Share Posted December 26, 2019 Hi All, Merry Christmas (one day late). Last week you guys fixed my Crown K1 amp ... thanks again Not using my sub much ... have KPT-904's But; tried my subwoofer again (Dayton Audio SA1000 amp with a Parts-Express 15" sub kit - used to sound pretty good). But "nothing when I tried it on Christmas .Suspect it is the feed from my AVR (Onkyo TX-RZ810), but very hard to get to the wiring ... so wanted to make sure the SA1000 amp is working first. OK; when I try the sub amp, it turns on, but get no sound and do not feel any movement in the woofer. So; tried a 2x50W class D amp ... again no sound, but a "hum" when I turn the volume up Therefore a "dumb" question Can I just use a L/R line output from my AVR (actually "zone 2 out, which I use for my 904's)? Have no clue why I could not test it like that, but have not found any references on line for this. Just want to be careful and thought I would ask the experts first Many thanks for your help, Emile 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 26, 2019 Share Posted December 26, 2019 That would work fine. 1 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 26, 2019 Author Share Posted December 26, 2019 6 minutes ago, CECAA850 said: That would work fine Thank you SIR ... thought so, but was trying to be "careful." Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 26, 2019 Share Posted December 26, 2019 - 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 26, 2019 Author Share Posted December 26, 2019 3 minutes ago, Randyh said: did you test your sub , using a multimeter - Yes; 3.9-4.0 ohms ... must be "good." 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 26, 2019 Share Posted December 26, 2019 - 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 26, 2019 Author Share Posted December 26, 2019 OK; sub sounds perfect with the L/R feed. So; either the cable from the AVR ot the AVR itself Rat's nest behind the AVR ... and it is in a cedar rack ... nightmare. OK; will try to pull it out and check direct from AVR to the sub. Thanks, all Quote Link to comment Share on other sites More sharing options...
Emile Posted December 27, 2019 Author Share Posted December 27, 2019 OK; pic of my nightmare ... pic doesn't do it justice many more wires Quote Link to comment Share on other sites More sharing options...
Emile Posted December 27, 2019 Author Share Posted December 27, 2019 OK; it MUST BE the cable Jeez; it's a 50 feet (12 gauge) run in the attic ... then another 20 feet to the sub-amp Hope the "vermints" in the attic did not get to it Quote Link to comment Share on other sites More sharing options...
billybob Posted December 27, 2019 Share Posted December 27, 2019 It's varments, but first I need you to stay calm, and no jumping to conclusions...🦊 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 27, 2019 Author Share Posted December 27, 2019 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted December 27, 2019 Share Posted December 27, 2019 Not sure you have tested those wires in question yet... 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 27, 2019 Author Share Posted December 27, 2019 7 minutes ago, billybob said: Not sure you have tested those wires in question yet... Not yet ... waiting on a "helper" to check continuity Haha; then I'll go up in the attic 1 Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted December 27, 2019 Share Posted December 27, 2019 19 hours ago, Emile said: OK; sub sounds perfect with the L/R feed. So; either the cable from the AVR or the AVR itself Is it possible that the SUB output is turned off at the receiver, either in the speaker settings menu, or in DIRECT mode. Your front panel display should have a tiny icon showing which speaker output channels are active. 1 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 27, 2019 Author Share Posted December 27, 2019 12 minutes ago, Khornukopia said: Is it possible that the SUB output is turned off at the receiver, Thanks! Tested it directly from the AVR also ... was "good." So; pretty sure it is the cabling ... either in the attic or at the cable connections Add-on ... tested the cable "inside" the room ... checks out OK. Next we'll check the wall plate connection Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 27, 2019 Share Posted December 27, 2019 Some plastics are quite tasty for rats and squirrels. We had rats eat up a bunch or Cat5 cable at my last workplace. 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted December 28, 2019 Share Posted December 28, 2019 5 hours ago, Emile said: Thanks! Tested it directly from the AVR also ... was "good." So; pretty sure it is the cabling ... either in the attic or at the cable connections Add-on ... tested the cable "inside" the room ... checks out OK. Next we'll check the wall plate connection Just to make sure we are talking about the same thing what wire are you using? When you mentioned the wall plate,made me wonder... 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 28, 2019 Author Share Posted December 28, 2019 15 hours ago, billybob said: what wire are you using? When you mentioned the wall plate,made me wonder... Have about 40 ft of 12 gauge insulated wire running from my AVR up and through the attic, terminating in a wall plate. Then about 20 ft of "regular" speaker wire (think its 14 gauge) from the wall plate to the subwoofer amp. Haha; lot of wiring to avoid a wire "across the floor" ... sub is 6 ft away from my AVR 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted December 28, 2019 Share Posted December 28, 2019 Yes your other sub is near the AVR. Was working in zone 2 before correct? Voltmeter to sub in zone 2... After you troulbleshoot the wire end to end, you may want to double check other recc's here... diligence. 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted December 28, 2019 Author Share Posted December 28, 2019 45 minutes ago, billybob said: Was working in zone 2 before correct? Thanks. Yes, worked fine. But had not used it for like 6 months. My voltmeter is not sensitive enough to detect AVR sub-out voltage ... but hooked it up "directly" to the sub and works. So; must be the cable. Did a quick visual check and it seemed OK ... but it is buried underneath insulation and Xmas boxes, so I will have to check it more closely 1 Quote Link to comment Share on other sites More sharing options...
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