Whats Happened

lolololol · 05-16-2013, 03:05 AM

As im getting no response in the Audio forum I hope that my UK brothers could help.....................

Dear All

I am having some challenges with my audio setup, which consists of :

JBL MS8
Alpine PDX4.100
L7 Speaker setup incl centre
Earthquakes for the under seats

The processor drives all the speakers in the car, the amp drives the subs.

I am getting no sub bass whatsoever now. Checked the amp and the lights are on and both fuses seem fine.
Should also add I've got 4 gauge from the battery separately fused, which feeds a distribution block which is fused again and this feeds both the amp and processor via 8 gauge. The processor is working and as said the amp lights are on ?

Any ideas people?? Would an amp fail whilst still having the lights on. ? How can I check it ?

Any direction welcomed - cheers

lolololol · 05-16-2013, 07:46 AM

139 views and not one shred of help peeps ??

bmwak · 05-16-2013, 08:18 AM

Have you got the subs running in HP / Stereo mode?

What ohms are the subs and amp?

Where is the amp signal turn on being picked up from?

Did you test the Earthquakes before fitting them, to ensure they output a LP signal / bass tone?

Where are you picking up the headunit signal from?

lolololol · 05-16-2013, 09:57 AM

Hi Mate,

Everything has been running fine for months so its not a new install.

AMP signal turn on is linked to the 'remote line' on the MS8.

The HU signal is coming straight into the processor via 4 channels over speakerwire. I have the amp linked to the MS8 via RCA.

GP87 · 05-17-2013, 07:18 PM

If you want to test your amp with my speakers/subs for the sake of discounting the amp as the cause- it would be a case of swapping a few cables in my boot...

makkan00 · 05-18-2013, 02:44 AM

I guess I have missed this thread.
I have responded to your pm.
Check as I stated.
If you have a multi-meter, worth of checking if you are getting any resistance in the wiring of under seat.
Who fitted it at the first place?

05-16-2013, 03:05 AM	#1
lolololol Colonel 96 Rep 2,204 Posts Drives: M4 F83 Join Date: Mar 2009 Location: The world iTrader: (4)	Whats Happened As im getting no response in the Audio forum I hope that my UK brothers could help..................... Dear All I am having some challenges with my audio setup, which consists of : JBL MS8 Alpine PDX4.100 L7 Speaker setup incl centre Earthquakes for the under seats The processor drives all the speakers in the car, the amp drives the subs. I am getting no sub bass whatsoever now. Checked the amp and the lights are on and both fuses seem fine. Should also add I've got 4 gauge from the battery separately fused, which feeds a distribution block which is fused again and this feeds both the amp and processor via 8 gauge. The processor is working and as said the amp lights are on ? Any ideas people?? Would an amp fail whilst still having the lights on. ? How can I check it ? Any direction welcomed - cheers __________________ Engine Mods: VF HEX Stage 2, ER Charge Pipes, VRSF Catless Downpipes, BMS Intakes and PCW Exhaust Mod Running Gear Mods: HRE Flow Form F01, Yellow Stuff pads. Cosmetic: Performance Grill, Lip Spoiler, Splitters, Side Skirt Extensions, Diffuser and BMS Tips
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05-16-2013, 07:46 AM	#2
lolololol Colonel 96 Rep 2,204 Posts Drives: M4 F83 Join Date: Mar 2009 Location: The world iTrader: (4)	139 views and not one shred of help peeps ?? __________________ Engine Mods: VF HEX Stage 2, ER Charge Pipes, VRSF Catless Downpipes, BMS Intakes and PCW Exhaust Mod Running Gear Mods: HRE Flow Form F01, Yellow Stuff pads. Cosmetic: Performance Grill, Lip Spoiler, Splitters, Side Skirt Extensions, Diffuser and BMS Tips
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05-16-2013, 08:18 AM	#3
bmwak Major 106 Rep 1,235 Posts Drives: 440i M-Sport Gran Coupe Join Date: Sep 2008 Location: London iTrader: (4)	Have you got the subs running in HP / Stereo mode? What ohms are the subs and amp? Where is the amp signal turn on being picked up from? Did you test the Earthquakes before fitting them, to ensure they output a LP signal / bass tone? Where are you picking up the headunit signal from?
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05-16-2013, 09:57 AM	#4
lolololol Colonel 96 Rep 2,204 Posts Drives: M4 F83 Join Date: Mar 2009 Location: The world iTrader: (4)	Hi Mate, Everything has been running fine for months so its not a new install. AMP signal turn on is linked to the 'remote line' on the MS8. The HU signal is coming straight into the processor via 4 channels over speakerwire. I have the amp linked to the MS8 via RCA. __________________ Engine Mods: VF HEX Stage 2, ER Charge Pipes, VRSF Catless Downpipes, BMS Intakes and PCW Exhaust Mod Running Gear Mods: HRE Flow Form F01, Yellow Stuff pads. Cosmetic: Performance Grill, Lip Spoiler, Splitters, Side Skirt Extensions, Diffuser and BMS Tips
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05-17-2013, 07:18 PM	#5
GP87 Private First Class 19 Rep 114 Posts Drives: Current:F82 M4 Previous:F83 M4 Join Date: Jun 2012 Location: London/Cheshire iTrader: (2)	If you want to test your amp with my speakers/subs for the sake of discounting the amp as the cause- it would be a case of swapping a few cables in my boot...
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05-18-2013, 02:44 AM	#6
makkan00 Major General 886 Rep 9,097 Posts Drives: F83 and F36 Join Date: Dec 2011 Location: Essex iTrader: (56)	I guess I have missed this thread. I have responded to your pm. Check as I stated. If you have a multi-meter, worth of checking if you are getting any resistance in the wiring of under seat. Who fitted it at the first place? __________________ F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play
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