Low Level Rca inputs

Gemcoska · 01-28-2009, 12:49 PM

Probably not till this weekend. Still need to vacuum and finish the trim.

Wes Howell · 02-20-2011, 11:19 PM

How did this turn out, Gemcoska?

Old thread......

Gemcoska · 02-25-2011, 11:26 PM

actually it turned out great... there's pics on here somewhere of it... if thats what you were looking for. Or were you asking about sound quality?

J.Garcia3921 · 05-18-2019, 02:56 PM

Quote:

Originally Posted by Technic

Quote:

Originally Posted by Gemcoska

Hey guys,

I'm adding a sub and need a low level line input to use those JL line connectors for the Class D mono amp I'll be using.

From what I've gathered, the head unit already sends out low level line signals. I couldn't figure out the pin assignments from http://www.fdebrus.be/car/hifi.jpg although this link is from a thread with base audio and I have premium. Is there a low level line signal for just the subs?

There is no line level signal at all in your Premium Sound system, as it is a digital signal output from the iDrive and high level outputs from the OEM amp.

What you can do is tap the OEM amp connector underseat subs outputs pins...

- 6(+) and 16(-) for the right
- 8(+) and 18(-) for the left

... and depending of the sub amp to use, determine if you will need a passive line output converter (LOC) or not.

For example, most JL Audio sub amps accept high level speaker inputs, so you will need to buy only a set of their speaker wire to RCA cables for connection: http://mobile.jlaudio.com/products_c...l.php?cat_id=5

If the amp accept high level inputs with just wires then you do not need any wire to RCA cables, just 16-12 gauge straight wires will do.

For remote wire you could use pin 13 in the back of the iDrive computer if the amp does not support signal sensing.

If the sub amp does not accept any high level inputs then you will need a line output converter, something like this: http://www.myradiostore.com/noise-fi...eis-loc-t.html

I have a line output converter but when I go to the stock amp in my trunk I'm having trouble finding out what wires I need to T tap..

01-28-2009, 12:49 PM	#45
Gemcoska Sleepy Member, wishing I was on the road. 34 Rep 280 Posts Drives: 2008 BMW M3 Join Date: Feb 2008 Location: Redondo Beach, CA iTrader: (0)	Probably not till this weekend. Still need to vacuum and finish the trim. __________________ 2003 Ducati '996 2008 M3: Sparking Graphite, Red Fox Standard, 19s, Premium pkg, Tech pkg, Premium Enhanced Sound, HD Radio, Heated Front Seats.
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02-20-2011, 11:19 PM	#46
Wes Howell www.facebook.com/weshowellcreative 59 Rep 623 Posts Drives: 2015 AW M4 Coupe Project Car Join Date: Feb 2011 Location: Instagram #weshowell iTrader: (1)	How did this turn out, Gemcoska? Old thread......
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02-25-2011, 11:26 PM	#47
Gemcoska Sleepy Member, wishing I was on the road. 34 Rep 280 Posts Drives: 2008 BMW M3 Join Date: Feb 2008 Location: Redondo Beach, CA iTrader: (0)	actually it turned out great... there's pics on here somewhere of it... if thats what you were looking for. Or were you asking about sound quality? __________________ 2003 Ducati '996 2008 M3: Sparking Graphite, Red Fox Standard, 19s, Premium pkg, Tech pkg, Premium Enhanced Sound, HD Radio, Heated Front Seats.
	Appreciate 0 Quote