[andy c]

Hi all, so today i finished installing the alpine hifi retrofit kit, all installed without a problem, and was working perfectly fine,

Untill i went out for a drive, about 5 mins into my drive it decided to just stop working.

Anybody have any idea on why this has happened? Or has experienced this?

[ctuna]

Sounds like something may have come loose
and fuses

[andy c]

i have checked the two fuses, one on the amp itself, and the other on the feed from the battery,

Im not sure about the connections, because both sides of the car went, at the same time, if it would of been one side then i would put it down to a loose connection, but i dont understand how both have gone..

The amp flashes red and green light, randomly between the two, is this normal?

[Technic]

Originally Posted by andy c

i have checked the two fuses, one on the amp itself, and the other on the feed from the battery,

Im not sure about the connections, because both sides of the car went, at the same time, if it would of been one side then i would put it down to a loose connection, but i dont understand how both have gone..

The amp flashes red and green light, randomly between the two, is this normal?

I guess that the amp has an internal problem -a red or just unlit LED when on is never a good thing in any amp.

[fdriller9]

Originally Posted by ctuna

Sounds like something may have come loose
and fuses

What radio do you have?

BMW Business CD radio, SA 662, should have the amp switch set to position 1.

All other options, Business Nav (SA 606), Pro Nav (SA 609), BMW Pro radio (SA 663), should be at position 2.

Switch is located under the amp, I think.

[montr]

Originally Posted by *********

What radio do you have?

BMW Business CD radio, SA 662, should have the amp switch set to position 1.

All other options, Business Nav (SA 606), Pro Nav (SA 609), BMW Pro radio (SA 663), should be at position 2.

Switch is located under the amp, I think.

The switch only control the level to the subwoofer. Position #2 is about 4dB less bass than position #1.

[Imperator]

How is the amp grounded? Did you use the earth post on the body at the RH-side rear wheel well?

How did you splice the connections into the branch audio connector?

[fdriller9]

Originally Posted by montr

The switch only control the level to the subwoofer. Position #2 is about 4dB less bass than position #1.

Wow...I thought that was so much more important than it really was.

Anyway according to this thread, the newest Alpine retrofit kit should be set to position 1 regardless of HU.

EDIT: So I guess I forgot to link to the thread.....it was on a 1-series forum. Can't find it now.

[andy c]

i grounded the amp with the bolt that holds the battery brace into place, on the right hand side wheel well

And with regards to splicing i used the through crimps provided.

today when driving home, i noticed that with a certain song, the front speakers would pick up one specific part of the beat... maybe now thinking it could be the amp? brand new though

[Technic]

Originally Posted by andy c

i grounded the amp with the bolt that holds the battery brace into place, on the right hand side wheel well

And with regards to splicing i used the through crimps provided.

today when driving home, i noticed that with a certain song, the front speakers would pick up one specific part of the beat... maybe now thinking it could be the amp? brand new though

Something is loose, perhaps the ground.

[Imperator]

Try a different place for the ground- not the battery unless you just want to do a quick test.

There's a good bare-metal ground post on the body, just forward of the wheel well behind the rear seat bolster. You'll find a ground distribution junction screwed into that post.

You might also note the Alpine amp will pick up some power/alternator noise with the high-level inputs running parallel to the power wire along the last portion of the wire loom. You can eliminate this with a pair of ferrite chokes-- add one on each side of the harness, somewhat close to the amp but independent of the power wire where the loom begins to split off.

[andy c]

yep your right guys, it was the ground, Thanks for all the help!!!

[andy c]

Ok, so now this little project is finished im thinking of upgrading the rear speakers,

Is it the same procedure as installing the alpine amp? (splice into the cables from the head unit for the rear speakers and run new cables out to the boot?)

Thanks again guys.