SIDE SHOW Posted June 19, 2015 Report Share Posted June 19, 2015 wire two of the 4 ohm speakers together for a 8ohm load on each side and run it as a two channel amp. see if that fixes the fault Link to comment Share on other sites More sharing options...
BigManAC Posted June 19, 2015 Author Report Share Posted June 19, 2015 wire two of the 4 ohm speakers together for a 8ohm load on each side and run it as a two channel amp. see if that fixes the fault Okay I'll give that a shot tomorrow. I'm also gonig to hook up a SQ1200.1 tomorrow and see if I get whine from it. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
BigManAC Posted June 19, 2015 Author Report Share Posted June 19, 2015 I bought the nendo 1100.4 and had noise issues, i never ran an amp this big on mids and highs and never had wine problems. I purchased it from crescendo website,and i sent it back to get checked out. meanwhile i bought a dc 175.4 from sonic , cause it matched the dc9k i was running. Same noise problem was there with the dc amp. I also tried grounding the head unit, got some high fidelity rca"s from dropping hertz. the noise is still there, just thought i would share cause i wasted a lot of time and money buying a new amp, when the problem is obviously somewhere else in my install. Yeah I know what you mean. That why I'm going to wait till I absolutely know it's the amp before I send it back. I have a week off soon so I'm god g to tear everything out again and double check things. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
BigManAC Posted June 19, 2015 Author Report Share Posted June 19, 2015 wire two of the 4 ohm speakers together for a 8ohm load on each side and run it as a two channel amp. see if that fixes the fault I wired the speakers down to 8 ohm and ran it as a two channel and didnt help. Im also used a friends SQ1200.1 and I didnt hear any noise but that might be because the low pass filter only went up to 200hz but idk. Im going to buy a amp I found that is about $150 and see if the noise is gone. If it is then I will have DroppinHZ warranty the amp. If not then Im tearing the car apart again to find what is causing this issue. No matter what I will solve this issue though haha. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
_paralyzed_ Posted June 19, 2015 Report Share Posted June 19, 2015 Just bench test the amp. If it makes the noise on a bench outside the car, then the amp is definitely the problem. Link to comment Share on other sites More sharing options...
BigManAC Posted June 19, 2015 Author Report Share Posted June 19, 2015 Just bench test the amp. If it makes the noise on a bench outside the car, then the amp is definitely the problem. I'll see if I can put a bench test together. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
SIDE SHOW Posted June 23, 2015 Report Share Posted June 23, 2015 Yeah sounds to me like it's an amp issue... make sure when you bench test it that you have all four channels running and use all 4 rca inputs. goodluck Link to comment Share on other sites More sharing options...
BigManAC Posted July 6, 2015 Author Report Share Posted July 6, 2015 Okay so im pretty sure I have figured the source of the noise. I bench tested the amp and it worked perfectly on the bench and when I put it back in the car the noise was back. I hooked up some RCA directly from the HU to the amp without running them under the carpet and no noise. However when I run them back behind the HU the noise comes back. Im am tearing out the center console tomorrow to see if there is a live wire or something behind there that is causing the interference. 2001 Saturn L200-Sony MEX-BT4100PFRONT STAGE:- (4) Crescendo PWX 6- Cadence XA250.2SUB STAGE:-Fi Audio BL 15 (Sealed Off)-Crescendo BC2kELECTRICAL:- Singer 240A alt - XS Power D3400- SkyHigh OFC power/speaker wire- Big 3 with SkyHigh 0gaugeBuild Log: Click HereScores: 146.5db @ 29hz Outlaw Link to comment Share on other sites More sharing options...
reedal Posted July 6, 2015 Report Share Posted July 6, 2015 Same RCA's used when behind the HU and when not under carpet? SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
SIDE SHOW Posted July 6, 2015 Report Share Posted July 6, 2015 do the rca's your using have metal/steel shields? could be just picking up on the pwr wire feeding the headunit itself Link to comment Share on other sites More sharing options...
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