Sequoia_Bass Posted June 18, 2017 Report Share Posted June 18, 2017 I am having signal issues, I have 1 sub wired parelell with 1 amp, there is cancelation between the rca's somehow, when i plug red rca from headunit to amp it is louder then plugging both in, also white rca from headunit gives no signal, but will reduce volume when plugged int with white one. This is first time this has happened to me, i took out my old system and have been building new one and this happened. using same amps, same subs, same settings same grounds and same power wire and everything is same except box. also i tried other rca cables to make sure the ones i am using wernt just shorting out, also my mids and high amps both rca outputs work just fine for them, and when both plugged in it is louder. Does anyone have suggestions? Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted June 18, 2017 Report Share Posted June 18, 2017 You have a problem with the head unit if the white RCA out gives no signal. 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...
Sequoia_Bass Posted June 18, 2017 Author Report Share Posted June 18, 2017 You think it's time to buy new headunit? Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted June 19, 2017 Report Share Posted June 19, 2017 Yes, sounds like the pre amp on that channel went out. 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...
06RTCharger Posted June 19, 2017 Report Share Posted June 19, 2017 Could he check the output with a digital multimeter to see if its toasted? Is that a function u can do with a dmm? Link to comment Share on other sites More sharing options...
reedal Posted June 19, 2017 Report Share Posted June 19, 2017 2 hours ago, 06RTCharger said: Could he check the output with a digital multimeter to see if its toasted? Is that a function u can do with a dmm? As long as the DMM can read AC voltage 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...
06RTCharger Posted June 19, 2017 Report Share Posted June 19, 2017 Cool, that would be a good step to take before tossing out the headunit. OP If u dont have a dmm, its probably a decent investment if u deal with the car audio hobby. I found that the local sears has the best deals on fluke meters. Link to comment Share on other sites More sharing options...
Sequoia_Bass Posted June 19, 2017 Author Report Share Posted June 19, 2017 I do have a DMM, i will check the rca outputs either tonight or tomorrow, and get back to you guys Link to comment Share on other sites More sharing options...
Sequoia_Bass Posted June 27, 2017 Author Report Share Posted June 27, 2017 I'm sorry to get back to you guys so late, i tried measuring the voltages but all of them came under .2 volts, i tried flipping from ac to dc measurming and also tried flipping positive and negative on the rca just incase it was reversed, but all of it failed, but yet my mids and highs are just as loud when i plug it into my amp( gain a tad below halfway) Link to comment Share on other sites More sharing options...
reedal Posted June 27, 2017 Report Share Posted June 27, 2017 Were you using a tone to measure? 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...
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