Engine Noise in speakers

[lilwheezy7d5 10+ year member]

well it worked.. thats all i know.

 

[lilwheezy7d5 10+ year member]

well for the most part.. at low volumes i hear a low beeping noise or popping? but its not popping. more of a beep, cant really explain it. But its not there someitmes.. could be the ground for the HU which ill check next, if i dont buy a new headunit.

 

[squeak9798 5,000+ posts]

Grounding the RCA will work aswell....but it's sort of like the ground loop isolator, it's a band-aid rather than a fix to the actual problem.

 

[Harrison486 10+ year member]

I tried wrapping the RCAs with speaker wire and grounding it to the metal casing of the HU and it didnt work //content.invisioncic.com/y282845/emoticons/crying.gif.ec0ebefe590df0251476573bc49e46d8.gif

 

[lilwheezy7d5 10+ year member]

im going to go in one day when i have time and try and reground the HU itself... hopefuly that eliminates the pop. Im in no rush since once i turn it up past 5 i dont hera it.

 

[Vash 10+ year member]

Sorry to jack ur thread but since we have similiar problems... i regrounded my Hu and nope whine still there. What's this grounding the RCA deal? I have a alpine 9811 and using AI-Net to hook up to the alpine H701. DO I ground the rca coming out of the RCA to the amps?

 

[lilwheezy7d5 10+ year member]

the rca int he back of the HU... take a wire and solder it to the connector of the RCA and screw the othe end of the wire to the chassis of the HU.

 

[Harrison486 10+ year member]

Ive tried wrappign some wire around the RCA outs on my HU and then grounding it and it didnt help at all //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[iagrdshaka 5,000+ posts]

Same thing just happened to me. I ended up finding out the HU was the problem....its a Pioneer BTW. //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif I grounded the RCAs a week ago, but Im still hearing the alt whine....anyway im just going to sell it next month anyway. Funny that Pionner has been the only HU that Ive ever had problems with.

 

[Harrison486 10+ year member]

Mines a pioneer too //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

So there really is no solution except new head unit?

 

[Ricky616 10+ year member]

Mines a pioneer too //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif
So there really is no solution except new head unit?

i have a pioneer also but i have no alt whine only had to ground my rca's to get rid of the speaker whine //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[squeak9798 5,000+ posts]

Sorry to jack ur thread but since we have similiar problems... i regrounded my Hu and nope whine still there. What's this grounding the RCA deal? I have a alpine 9811 and using AI-Net to hook up to the alpine H701. DO I ground the rca coming out of the RCA to the amps?

The H701's are NOTORIOUS for having a high noise floor when using the analog inputs, especially the Ai-net connection. So, rather than alt whine, you may simply have a noise floor issue that's inherent to the unit itself.

But, yes, you would ground the RCA's coming out of the H701 to the amps to see if it will eliminate the problem.

The H701, while being a very nice unit (have one myself), does have it's downfalls.....the noise floor is one of them. Luckily for me, I don't presently have the noise floor issue //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Vash 10+ year member]

The H701's are NOTORIOUS for having a high noise floor when using the analog inputs, especially the Ai-net connection. So, rather than alt whine, you may simply have a noise floor issue that's inherent to the unit itself.
But, yes, you would ground the RCA's coming out of the H701 to the amps to see if it will eliminate the problem.

The H701, while being a very nice unit (have one myself), does have it's downfalls.....the noise floor is one of them. Luckily for me, I don't presently have the noise floor issue //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Ok I tried to ground the rca connetion at the amp (from h701 to amp) to the same ground as the HU and the problem is still there. NOT ONLY THAT but now it's 100x louder (the whining) accompanied by crackling noises to. What does that tell us? What else should I try? I don't think its the H701 because before I went full active I had a DLS CA-23 amp to run my components. On that CA-23 amp was a switch to select if i was using High Level (speaker lead) in or Low level (rca input) and one time i had select high level and that very same whining occured. But when i switch it to low level the whining completely vanished. Anyone have any ideas?

 

[Vash 10+ year member]

The H701's are NOTORIOUS for having a high noise floor when using the analog inputs, especially the Ai-net connection. So, rather than alt whine, you may simply have a noise floor issue that's inherent to the unit itself.
But, yes, you would ground the RCA's coming out of the H701 to the amps to see if it will eliminate the problem.

The H701, while being a very nice unit (have one myself), does have it's downfalls.....the noise floor is one of them. Luckily for me, I don't presently have the noise floor issue //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Ok I tried to ground the rca connetion at the amp (from h701 to amp) to the same ground as the HU and the problem is still there. NOT ONLY THAT but now it's 100x louder (the whining) accompanied by crackling noises to. What does that tell us? What else should I try? I don't think its the H701 because before I went full active I had a DLS CA-23 amp to run my components. On that CA-23 amp was a switch to select if i was using High Level (speaker lead) in or Low level (rca input) and one time i had select high level and that very same whining occured. But when i switch it to low level the whining completely vanished. Anyone have any ideas?

EDIT: sorry for double post!

 

[Vash 10+ year member]

Ok this is what i just did. I disconnect AI-net and hooked up a mp3 player to the aux1 in of the h701. The whining was inaudible. hooked up the ai-net for the HU (now HU controls aux1) and the whining is back. Is this to say there's noise in the AI-net interface or is it coming from my HU?