craig_brux
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Registered: 5th Jan 06
User status: Offline
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right bear with me lol
i have a PIONEER DEH-30MP and whenever the audio lead for the amp (red and white) is plugged in, or the pin even touching the socket, i have a crackling/buzzing from each of my speakers. the noise doesnt change with volume or any audio settings. i have no amp or power leads or anything in my car, and it only happens with the engine running.
i have tried a noise reducer thing plugged into the audio lead, a noise suppressor into the headunit, and an alternator suppressor. its the second headunit too. and 4 sets of leads.
anyone had a similar prob?fixed it? ive ripped my amp out atm but i wanna put it back in, thanks
[Edited on 21-11-2006 by bass_junkies]
[Edited on 28-11-2006 by bass_junkies]
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Bad earth for the headunit itself. Run a new earth for the HU.
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craig_brux
Member
Registered: 5th Jan 06
User status: Offline
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already tried that, fitting the head unit supressor included powering it from a diff source so i wired i tup to the fag lighter but it was the same
and if it was a bad earth would it not do it all the time, because it only does it when the rca leads are touching the output sockets and when the engine is running?
[Edited on 18-11-2006 by bass_junkies]
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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That means the RCA leads are not shielded and are being run too close to power cables and is feeding the alternator noise back through.
You should notice the pitch change when you rev the engine.
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craig_brux
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Registered: 5th Jan 06
User status: Offline
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quote:
Originally posted by Richie
That means the RCA leads are not shielded and are being run too close to power cables and is feeding the alternator noise back through.
You should notice the pitch change when you rev the engine.
quote:
posted on 13th Nov 06 at 07:41 PM
right bear with me lol
i have a PIONEER DEH-30MP and whenever the audio lead for the amp (red and white) is plugged in, or the pin even touching the socket, i have a crackling/buzzing from each of my speakers. the noise doesnt change with volume or any audio settings. i have no amp or power leads or anything in my car, and it only happens with the engine running.
i have tried a noise reducer thing plugged into the audio lead, a noise suppressor into the headunit, and an alternator suppressor. its the second headunit too. and 4 sets of leads.
anyone had a similar prob?fixed it? ive ripped my amp out atm but i wanna put it back in, thanks
i have also used four different sets of rca leads, ive had the power lead running from the battery on the floor around the car to the boot, and the rca leads over the seats, but it didnt change anything.
The only thing i can put it down to is the headunit being wank. as i have never had the sub working without the prob with his headunit, but i had the same setup with a diff headunit (pioneer again, and roughly the same price) with no problems. its the second headunit because the first was faulty (with a different fault) and it was the same with that.
does anybody have this stereo running an amp?do you have any interference?
thanks ppl that have helped so far
[Edited on 21-11-2006 by bass_junkies]
[Edited on 21-11-2006 by bass_junkies]
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craig_brux
Member
Registered: 5th Jan 06
User status: Offline
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ive re-earthed the headunit straight to the battery but that doesnt change a thing! anyone wanna lend me a headunit to see if its that? 
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JayT
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Registered: 26th Jul 06
Location: Stoke On Trent
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il lend you mine mate as long as you know what your doing and dont break it lol!
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craig_brux
Member
Registered: 5th Jan 06
User status: Offline
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give me a ring jay when ur spare and il borrow it. i only need to plug it in lol
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Richie
Member
Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline
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Craig, it could very well be the headunit.
My brother bought a rebranded unit which I fitted into my car.
I have had a Clarion DXZ 858 RMP fitted to my astra sounding perfectly for some time, with a sub and components. No interference and crystal clear sound.
I fitted the rebranded unit, and I had EVERYTHING.
CD motor noise, alternator noise, noise when turning on the fans, indicators the lot.
Fitted my Clarion back, perfectemundo.
Only thing I could see different was the in line regulator block on the +12v feed in the wiring loom on the rebranded unit.
Checked the Pioneer 6400 my mother has and it also has interference, and one of these regulator blocks fitted in the wiring loom.
Does your Pioneer HU have one of these?
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craig_brux
Member
Registered: 5th Jan 06
User status: Offline
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i dont think there is anything on the wire, just the wire from the hu to the connector block in the car, have u got a pic richie?to see what im looking for?
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JayT
Member
Registered: 26th Jul 06
Location: Stoke On Trent
User status: Offline
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you still having problems with it mate if you are, xmas holidays are coming up so will be free then, just give me a bell and al drive down to you and give you a hand!
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