It plays, but it plays really low

G-Bus · 09-09-2010, 06:01 PM

So I installed a JL Audio Amp 500 WATTS RMS to a JL Audio 10" Sub. I used everything that was said in the DYI expect for the signal taping. I used the OEM Wiring thats supposed to go to the Harman Kardon amplifier. I figured it was the same color coded wires and I had signal on them. I hooked everything up. It works, but the sub plays really low. I played with all the settings and nothing works.

What did I do wrong?

kaigoss69 · 09-09-2010, 09:12 PM

What color were the wires you tapped for the input? Are you using an LOC or are you feeding the signal straight into the amp?

fdriller9 · 09-09-2010, 09:20 PM

So you using the output from the headunit? or the amp? Are any filters on? Is your gain adjusted? Are you sure your getting a full signal and not one that is actively crossed-over?

kaigoss69 · 09-09-2010, 09:33 PM

He cannot use the output from the headunit (if it is indeed a HK system) since it is optical. I bet you he tapped one of the high/midrange signals high-passed at 150Hz.

G-Bus · 09-10-2010, 12:32 PM

You know when you take the covers in the trunk, right in the middle of the trunk, there's some wiring there that's useless if you don't have the HK system right?

In the DYI I read, it said to tap onto the Red/Blue wire for signal. I passed it thru the filters and maxed out the gain. Then from the filter, I connected with RCA to the amplifier.

The whole point was that I did not want to tap myself into the wires that were coming out of the OEM amplifier on the left side (way too tight and all twisted together. For some other reason, my plug doesn't want to come out of the amplifier so it's even harder to tap into those. I tought, since the other wires that are there in the middle of the trunk for nothing were good as well especially knowing they have the same color codes.

kaigoss69 · 09-10-2010, 02:44 PM

Wow, I was starting to write a response but I don't know where to start, and I don't know how to help you without insulting you first. The best advice I can give you is to contact forum member Technic and buy his harness. It is a plug-and-play solution and you cannot screw anything up.

G-Bus · 09-10-2010, 02:46 PM

Quote:

Originally Posted by kaigoss69

Wow, I was starting to write a response but I don't know where to start, and I don't know how to help you without insulting you first. The best advice I can give you is to contact forum member Technic and buy his harness. It is a plug-and-play solution and you cannot screw anything up.

Insult me?! Ohh boy thanks! I read the DYI and thats what it said to do. I obviously did not go thru 50 pages of thread to find out if someone made a harness for it. Mind sharing a link or something?!

kaigoss69 · 09-10-2010, 02:57 PM

Just send a PM to Technic and let him know what audio system you have. You'll be glad you did.

G-Bus · 09-10-2010, 03:30 PM

Thanks I just sent him a PM.

VP Electricity · 09-10-2010, 07:27 PM

So your car doesn't have HK audio. Which audio system DO you have?

G-Bus · 09-10-2010, 08:59 PM

Quote:

Originally Posted by VP Electricity

So your car doesn't have HK audio. Which audio system DO you have?

Well I know it's not the HK/Logic 7 system, so which one is it? How many sound systems are there in a '07 335 with iDrive?

Technic · 09-10-2010, 09:35 PM

Quote:

Originally Posted by G-Bus

Well I know it's not the HK/Logic 7 system, so which one is it? How many sound systems are there in a '07 335 with iDrive?

It is Logic7.

G-Bus · 09-11-2010, 08:58 AM

Ok I think there's a misunderstanding. When I say the wiring that goes to the HK amplifier, I have the wires in the car, but the actual HK AMP is not there. I only have the small black amplifier on the left side of the trunk.

Technic · 09-11-2010, 11:56 AM

Quote:

Originally Posted by G-Bus

Ok I think there's a misunderstanding. When I say the wiring that goes to the HK amplifier, I have the wires in the car, but the actual HK AMP is not there. I only have the small black amplifier on the left side of the trunk.

Did not notice that your car is Canadian... eh?

Yes, your system is HiFi.

Check this thread for a better description of which wires you need to tap in your system: http://www.e90post.com/forums/showth...highlight=hifi

09-09-2010, 06:01 PM	#1
G-Bus Lieutenant 58 Rep 450 Posts Drives: F10 Join Date: Jul 2010 Location: Montreal iTrader: (3)	It plays, but it plays really low So I installed a JL Audio Amp 500 WATTS RMS to a JL Audio 10" Sub. I used everything that was said in the DYI expect for the signal taping. I used the OEM Wiring thats supposed to go to the Harman Kardon amplifier. I figured it was the same color coded wires and I had signal on them. I hooked everything up. It works, but the sub plays really low. I played with all the settings and nothing works. What did I do wrong?
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09-09-2010, 09:12 PM	#2
kaigoss69 Brigadier General 303 Rep 3,969 Posts Drives: '08 335i Join Date: Jul 2008 Location: JAX iTrader: (6)	What color were the wires you tapped for the input? Are you using an LOC or are you feeding the signal straight into the amp?
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09-09-2010, 09:20 PM	#3
fdriller9 Banned 263 Rep 7,089 Posts Drives: '06 AW 330xi Join Date: Mar 2009 Location: North Jersey/Philly/NYC iTrader: (4) Garage List 2006 330xi [6.44]	So you using the output from the headunit? or the amp? Are any filters on? Is your gain adjusted? Are you sure your getting a full signal and not one that is actively crossed-over?
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09-09-2010, 09:33 PM	#4
kaigoss69 Brigadier General 303 Rep 3,969 Posts Drives: '08 335i Join Date: Jul 2008 Location: JAX iTrader: (6)	He cannot use the output from the headunit (if it is indeed a HK system) since it is optical. I bet you he tapped one of the high/midrange signals high-passed at 150Hz.
	Appreciate 0 Quote

09-10-2010, 12:32 PM	#5
G-Bus Lieutenant 58 Rep 450 Posts Drives: F10 Join Date: Jul 2010 Location: Montreal iTrader: (3)	You know when you take the covers in the trunk, right in the middle of the trunk, there's some wiring there that's useless if you don't have the HK system right? In the DYI I read, it said to tap onto the Red/Blue wire for signal. I passed it thru the filters and maxed out the gain. Then from the filter, I connected with RCA to the amplifier. The whole point was that I did not want to tap myself into the wires that were coming out of the OEM amplifier on the left side (way too tight and all twisted together. For some other reason, my plug doesn't want to come out of the amplifier so it's even harder to tap into those. I tought, since the other wires that are there in the middle of the trunk for nothing were good as well especially knowing they have the same color codes.
	Appreciate 0 Quote

09-10-2010, 02:44 PM	#6
kaigoss69 Brigadier General 303 Rep 3,969 Posts Drives: '08 335i Join Date: Jul 2008 Location: JAX iTrader: (6)	Wow, I was starting to write a response but I don't know where to start, and I don't know how to help you without insulting you first. The best advice I can give you is to contact forum member Technic and buy his harness. It is a plug-and-play solution and you cannot screw anything up.
	Appreciate 0 Quote

09-10-2010, 02:57 PM	#8
kaigoss69 Brigadier General 303 Rep 3,969 Posts Drives: '08 335i Join Date: Jul 2008 Location: JAX iTrader: (6)	Just send a PM to Technic and let him know what audio system you have. You'll be glad you did.
	Appreciate 0 Quote

09-10-2010, 03:30 PM	#9
G-Bus Lieutenant 58 Rep 450 Posts Drives: F10 Join Date: Jul 2010 Location: Montreal iTrader: (3)	Thanks I just sent him a PM.
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09-10-2010, 07:27 PM	#10
VP Electricity Brigadier General 301 Rep 3,201 Posts Drives: F34 xDrive Join Date: Jan 2008 Location: portland oregon iTrader: (3)	So your car doesn't have HK audio. Which audio system DO you have?
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09-11-2010, 08:58 AM	#13
G-Bus Lieutenant 58 Rep 450 Posts Drives: F10 Join Date: Jul 2010 Location: Montreal iTrader: (3)	Ok I think there's a misunderstanding. When I say the wiring that goes to the HK amplifier, I have the wires in the car, but the actual HK AMP is not there. I only have the small black amplifier on the left side of the trunk.
	Appreciate 0 Quote