Any Alpine Guru's Out There

[Jandrsn36 10+ year member]

Ok, I know Im a noob on this site but here is my problem. First off my system consist of:

Alpine Iva-D310 headunit

Alpine 6.5 components

Alpine 6x9"s

Alpine MRA-F350 theater amp

Tsunami 1.5 capacitor

Ok, my F350 is currently installed and it sounds great with the headunit. My problem is I upgraded to the MRA-D550 Digital Theater Amp and I get sounds like engine noise but its there when the engine is off also. I sent it back to Apline and they replaced it under warranty. I get the D550 back (brand new) and the noise is still there. I checked my grounds and they are all fine.

My question is, is there a particular way the D550 needs to be installed? Like I Said, if I put the F350 back in it plays fine. I cant seem to figure out where the noise is coming from I also tried changing out the Ai-Net cable with a brand new one and still the noise is there.

Can anyone here help me out before I put a brand new amp on ebay, I am tired of messing with it.

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[bikinpunk 10+ year member]

Try the optical input connection from the d310 to your amp. That should stop the noise dead in it's tracks.

 

[starkfu 10+ year member]

you have to use the optical connection.

As far as the noise, what connections are you putting into the amp and what else do you have hooked up on AINET? Are you using the KCE-510M? Did you flip the norm/EQ switch on your HU?

Personally I would have stuck with the F350, I got rid of the D550 for it.

 

[Jandrsn36 10+ year member]

Try the optical input connection from the d310 to your amp. That should stop the noise dead in it's tracks.

I am running optical straight from the HU to the amp.

 

[Jandrsn36 10+ year member]

you have to use the optical connection.
As far as the noise, what connections are you putting into the amp and what else do you have hooked up on AINET? Are you using the KCE-510M? Did you flip the norm/EQ switch on your HU?

Personally I would have stuck with the F350, I got rid of the D550 for it.

The only thing connected via AINET is the amp and the switch is set to EQ. I am not familiar with the KCE-510M. What is it?

 

[Jandrsn36 10+ year member]

I just read up on the KCE-510M and I dont need that for the sub. Also, its like the noise only comes through a couple of the channels (RR, RF, LF). Is it speaker grounds that can be bad?

 

[Jandrsn36 10+ year member]

Starkfu, why did you get rid of your 550, was it giving you problems?

 

[bikinpunk 10+ year member]

The only thing connected via AINET is the amp and the switch is set to EQ. I am not familiar with the KCE-510M. What is it?

I am running optical straight from the HU to the amp.

So, you're using both digital and ai-net?

 

[Jandrsn36 10+ year member]

Yes that is correct.

 

[bikinpunk 10+ year member]

Why?

I have both running to my processor but am also using the ipod adapter so I have to have ai-net. Just trying to think of what your case needs the direct connection for both? Does ai-net carry radio?

 

[starkfu 10+ year member]

the theater amps require digital connection and AINET, or they don't work.

 

[starkfu 10+ year member]

I got rid of the 550 as the F350 has more capabilities and is the newer model.

 

[Jandrsn36 10+ year member]

the theater amps require digital connection and AINET, or they don't work.

That is correct, you have to have both. AINET runs from the brain to the amp. Optical runs from the HU to the amp. Guess I will just stick with the 350 and put the 550 on ebay.

 

[bikinpunk 10+ year member]

That is correct, you have to have both. AINET runs from the brain to the amp. Optical runs from the HU to the amp. Guess I will just stick with the 350 and put the 550 on ebay.

I know where they run. I have the same h/u. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif