Phoenix Gold Phorum

Guys,

i have my LOC w/remote turn on, mounted in the trunk(battery in the trunk also). it works fine, but the one problem i have is if i close the trunk the F.M. stations get weak and full of static . open the trunk and stations come back I replaced the RCA cables and ran them away from the power wire but still no difference. The stations will also come back with the trunk closed if i unplug the RCA's from the amp.

the LOC is grounded to the battery along with the amp. Does this sound like a bad LOC?? I also made sure the antenna is pluged in also on the back glass, and it is the stock radio.

This is the LOC i used.... http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 0406654402

THANKS IN ADVANCE

the only thing I could think of was something that I read recently. Is the trunk lid grounded? Is there a strap somewhere in there that is, or should be connected or needs to be cleaned? I read recently that if the lid, or hood is not properly grounded that it can act as a reflector for signals, but we were talking about am at the time so I am not sure if it applies.

I do not understand how the loc would effect it but I always recomend tapping the loc as close the deck as possible to reduce noise.

ttocs wrote:the only thing I could think of was something that I read recently. Is the trunk lid grounded? Is there a strap somewhere in there that is, or should be connected or needs to be cleaned? I read recently that if the lid, or hood is not properly grounded that it can act as a reflector for signals, but we were talking about am at the time so I am not sure if it applies.

I do not understand how the loc would effect it but I always recomend tapping the loc as close the deck as possible to reduce noise.

Thanks, ill double check everything again. the store were i bought the LOC is sending me another one to make sure thats not the problem. if its not the problem, ill maybe try mounting it in the cabin of the car

What amp are you running?

dedlyjedly wrote:What amp are you running?

I second that. D class amps can nuke certain radio frequencies. Also what kind of car?

VW337 wrote:

dedlyjedly wrote:What amp are you running?

I second that. D class amps can nuke certain radio frequencies. Also what kind of car?

yes, im runnig the v800.1(mono d) in a 2010 camaro.
http://phoenixphorum.com/rsdc102-v1502- ... 12473.html

but it did the same thing when i had the ryval 1502 hooked up. i replaced the LOC box, but its doing the same thing, so its not that.

I understand thats its EMI, so how do i fix this interference?

anyone?

so it is happening with both AB and D class amps and a different LOC.

Re-reading your initial post I feel you may have the wrong leads for the LOC, did you tie in directly to the factory speakers? If so there may be a factory amp generating interference when you add the signal load of the LOC. Try dropping Right and test, then Left and test see if one side vs the other creates the same issue, then swap wire phase and re-test.

VW337 wrote:so it is happening with both AB and D class amps and a different LOC.

Re-reading your initial post I feel you may have the wrong leads for the LOC, did you tie in directly to the factory speakers? If so there may be a factory amp generating interference when you add the signal load of the LOC. Try dropping Right and test, then Left and test see if one side vs the other creates the same issue, then swap wire phase and re-test.

yes, with both amps.

i dont have a factory amp(no boston acu.) just the regular radio. i thought it might have been feedback going to the speaker, so i tryed another LOC, same thing, so i installed a basic LOC and ran a remote wire from the fuse panel and still the same thing, so that blew that theory away. I also tried a ferrite choker in different places, but still the same.

btw - thanks for the suggestions, at this point i guess ill be using the MP3 alot!

Verify your + and - speaker leads, drop the - and feed the + to the center pin of the RCA and ground the shield, be very careful with gain and volume. I have used this method many times with OEM integration and it works 90% of the time as most factory radios use a BTL amp (I believe this is the proper term). Essentailly the - lead is referenced to ground and you can cut the output voltage a bit this way.

Test and see if the radio interference goes away, as I feel it is LOC back-feed somewhere once connected to the amp.

VW337 wrote:Verify your + and - speaker leads, drop the - and feed the + to the center pin of the RCA and ground the shield, be very careful with gain and volume. I have used this method many times with OEM integration and it works 90% of the time as most factory radios use a BTL amp (I believe this is the proper term). Essentailly the - lead is referenced to ground and you can cut the output voltage a bit this way.

Test and see if the radio interference goes away, as I feel it is LOC back-feed somewhere once connected to the amp.

ok, i'll try that, thanks

did the loc have a ground on it, or a seperate brown wire as well as a ground?

ttocs wrote:did the loc have a ground on it, or a seperate brown wire as well as a ground?

the first LOC w/remote turn on had a ground that i ran straight to the battery. the regular LOC i have now has a brown ground wire, but i did not hook it up

You ran a ground all the way to the battery for a LOC?

Try running it to where your amp grounds...

ground the brown wire when all else fails. I have seen it correct engine noise problems, maybe this too.....

Another silly thought, don't the ryval amps have high level inputs? Why are you using an LOC?

stipud wrote:You ran a ground all the way to the battery for a LOC?

Try running it to where your amp grounds...

the battery is in the truck, along with the LOC and amp. they are all grounded straight to the battery, which is only about 2ft from everything

its the factory radio, thats why i used a LOC. No one makes a radio for the 2010 camaro yet