Ohhhh, you guys are gonna laugh at this. Me pwnt myself.

[bikinpunk 10+ year member]

I have had some noise issues since I installed my 3rd amp. All weekend I have been dealing with trying to figure it out. I assumed it had to do something with the introduction of the 3rd amp, but after using muting plugs on all amps, I realized it was the subwoofer connection. I just couldn't narrow it down to the specific point that was causing the noise.

So, I went outside with my DMM in hand. Needed to test the resistance of the RCA shields per the suggestion of someone on DIYMA forum. Grounded one lead, and tested the resistance of one of my RCA's on the subwoofer amp. Notice the amphasis on "one". I had 50ohms and it jumped up to 70 ohms and around. NOT GOOD. I checked the one next to it and had a huge amount, too.

Then I realized something..."hey, I'm checking my pre-out RCAs". Then something else hit me ... I had been pluggin in the RCA's to the pre-out of the subwoofer amp throughout the weekend. I laughed out loud at myself. Went into the garage, came back with some RCA cables, connected them to the processor and the correct set of RCA's on my amp. Turned the car on...noise gone. In the weekend mess I just wasn't paying attention to the RCA plug-in I was using.

lesson: always plug RCA's into the correct input!

//content.invisioncic.com/y282845/emoticons/*******.gif.a649d21efc0d1fd4890a6428166586c1.gif

Click to read more...

 

[regal8r 5,000+ posts]

attention to detail //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

i have a nice story about detail, but it really doesnt work over teh intarwebz. glad you got your shit fixed

 

[bdawson72 5,000+ posts]

i didnt laugh.....but it does ****

 

[bikinpunk 10+ year member]

^ I think it's funny now. I wouldn't have yesterday though. //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

 

[lostdaytomorrow 10+ year member]

haha

 

[bikinpunk 10+ year member]

haha

HEY! Why are you laughing at me!?

//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif

j/k. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[04_edge 10+ year member]

i had the exact same problem with my install this weekend, thought i had bad rca's took them back, installed new ones and it still did it, then i got the idea of switching the rca's into the other terminal on my amp, did it and it stopped.

 

[bikinpunk 10+ year member]

i had the exact same problem with my install this weekend, thought i had bad rca's took them back, installed new ones and it still did it, then i got the idea of switching the rca's into the other terminal on my amp, did it and it stopped.

Did you laugh at yourself after the anger went away?

 

[04_edge 10+ year member]

kind of....i had them installed in the right one, i think its actually something wrong with the input, b/c i put them in the rca set thats used for strapping and i stopped...im about to take pics and vids now, its hella loud. i feel kinda dumb though that i didnt figure that out sooner.

 

[bikinpunk 10+ year member]

i feel kinda dumb though that i didnt figure that out sooner.

I did too.

 

[helotaxi 5,000+ posts]

Try spending hours wiring everything for 3 subs in tight quarters and then turning it on and getting dead silence. No matter what utter silence from the subs. Spend another few hours troubleshooting the amp and HU. Finally it dawns on me that I had wired all 3 DVC subs out of phase with themselves. I was getting total cancellation in the magnetic field of each sub.

 

[Max_Power 10+ year member]

Try spending hours wiring everything for 3 subs in tight quarters and then turning it on and getting dead silence. No matter what utter silence from the subs. Spend another few hours troubleshooting the amp and HU. Finally it dawns on me that I had wired all 3 DVC subs out of phase with themselves. I was getting total cancellation in the magnetic field of each sub.

that sucks X 50,000 - I had a similar problem.... let me set the stage. It was the dead of winter like 10 degrees outside with 40mph winds. I was installing subs in my car. Long story short after about 2hrs I gave up. All they would do is wiggle back and forth, but make no noise. So I got fed up and returned them. A day or so later I looked at the box and found I had one wire switched with the other thus making them out of phase. Learned a good lesson that night, re-check, and then re-check again.