sovka_17 Posted March 18, 2016 Report Share Posted March 18, 2016 So as I turn up the volume about 15 percent or so, the sub stops playing completely, leaving only my door speakers playing. So I check the amp light and its still green, not red. I turned the car off and restarted, the amp turned on, again green light but no sound. What could be the problem? This happened as I was playing the VM Audio ECW120 Encore 12". I thought I fried the sub because I was playing it at 90-95% volume for about 2 minutes, so I got a new SoundQubed HDC3 15" D2 Copper 1500W RMS. Played it at 15% volume and same thing. So I rewired everything all the grounds positives and speaker wires, changed the remote wire and rewired the audio battery all to double check loose wires. All fuses are good too. Still same thing. The amp is a Rockville RXD-M4 its a class D monoblock high power amplifier with 6,000 watts peak output, 3,000 watts RMS output and 1500 watts CEA-2006 rated power. The gain is set to about 75 percent. Is it a fried amp? What could be the problem here? Link to comment Share on other sites More sharing options...
Skullz Posted March 18, 2016 Report Share Posted March 18, 2016 Tough to say unless you have a spare amp to test and see, without known good equipment for testing your kind of in the dark trying to trouble shoot things like this. You can check your voltage and resistance at the amp and see if there is a problem in your wiring. 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted March 18, 2016 Report Share Posted March 18, 2016 Welcome to SMD! Do you have the sub amp playing off of the sub out from the head unit? Maybe try switching to the rear output to see if it still does it. 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
sovka_17 Posted March 18, 2016 Author Report Share Posted March 18, 2016 Ive done all the testing with the multimeter, everything is perfect. Running at 14.9 volts at the amp. I tried a different sub still nothing. Just green light no sound. Im using high to low converter from the back speakers so i thought it was bad, got a new one from the car audio shop, still nothing. I feel like the amp took a dump? although rated at 3000 rms@1ohm. I'll try wiring a different amp see if anything happens. Link to comment Share on other sites More sharing options...
SkarredSierra Posted March 18, 2016 Report Share Posted March 18, 2016 When u do set up the new amp set ur gains correctly with a dd1 or at least a dmm. Link to comment Share on other sites More sharing options...
Tarball Posted March 18, 2016 Report Share Posted March 18, 2016 smell near the amp. see if you get that lovely scent of burnt ozone. cranking at 75% gain you could have clipped the amp to death. CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db Link to comment Share on other sites More sharing options...
3vil Posted March 19, 2016 Report Share Posted March 19, 2016 Kinda sounds like typical Rockville build quality. Link to comment Share on other sites More sharing options...
sovka_17 Posted March 27, 2016 Author Report Share Posted March 27, 2016 So I got a new amp (cab 1600.1) and same thing. So I went for the inputs and for some reason the high to low converter didn't work. Turns out that I hooked them up to my stock subwoofer (Audi S5 B8, 8" sub) which didn't play highs at all. I found that out with the dd-1 when I played the 1kHz track and it did not read any signal but the 40hz worked perfectly. Went to the door speaker and voila I got sound to the sub. Link to comment Share on other sites More sharing options...
RainStryke Posted March 27, 2016 Report Share Posted March 27, 2016 Sounds like a bad ground. Link to comment Share on other sites More sharing options...
Ron36 Posted March 27, 2016 Report Share Posted March 27, 2016 Can u hook your phone to the amp threw rca's bypassing your rca cables and see if u get sound a bad ground would have the amp turning on and off , I'm a dumbass but sounds like bad RCA's 2022 Ford Maverick on 22’s Skar SK1500.1 on 4 Skar VD-8’s Mids Sundown Super tweeters, Skar TX 6.5 components on Skar SKM400.4 LC2 for audio control , XS Power D680 XS Series Extra Battery Link to comment Share on other sites More sharing options...
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