2012 E70 Logic7 Amplifier substitution

Hodgepodge · 03-31-2019, 06:07 PM

I have a 2012 X5 with the upgraded stereo. It appears that the amp is toast (Rear channels and midrange are really weak). Before I open it all up and look, I did a quick check and the replacement amps for this particular set up are pretty expensive, even used on eBay. (This one is a Lear.) Since it is often pretty hard to test these amps and the problem might be with the head unit, I would love to be able to swap one in from one of my other BMWs, if possible, before forking out any money. I have an '08 E61 and 2 E93s that I can pull amps from to test. Can anyone tell me if the Lear amp in this car and the Harmon Kardon amps in my other BMWs are interchangeable? I do NOT want to go aftermarket so please don't suggest that. An alternative would be to pull the amp and send it off to somebody to test if anyone has a vendor that will test it.

Thanks for your thoughts on this.

smass · 03-31-2019, 07:32 PM

My E90 L7 amp is not the same as my E70 L7 amp. But you can use your E90 head unit to test with your E70.

Hodgepodge · 03-31-2019, 08:56 PM

Smassey321 are you saying I can test my E70 amp by plugging it into the E90 amp location at the trunk? That would be a great way to test.

smass · 03-31-2019, 09:52 PM

Quote:

Originally Posted by Hodgepodge

Smassey321 are you saying I can test my E70 amp by plugging it into the E90 amp location at the trunk? That would be a great way to test.

I am saying you can remove the E90 radio and plug it into the E70 to rule out the head unit.

03-31-2019, 06:07 PM	#1
Hodgepodge Dude with a lot of BMWs 2 Rep 27 Posts Drives: E93(2),E70,E61,2002(2),++ Join Date: Oct 2011 Location: Western PA iTrader: (0) Garage List 2009 BMW 328i E91 [0.00] 1991 BMW M5 [9.75] 1974 BMW 2002 [0.00] 2002 BMW M5 [0.00] 1988 BMW M5 [10.00] 1988 BMW M5 [9.75] 1975 BMW 2002 [0.00] 2012 BMW X5 [0.00] 2008 BMW 328i Conve ... [0.00] 2008 535i Touring [0.00] 2009 335i Convertible [0.00]	2012 E70 Logic7 Amplifier substitution I have a 2012 X5 with the upgraded stereo. It appears that the amp is toast (Rear channels and midrange are really weak). Before I open it all up and look, I did a quick check and the replacement amps for this particular set up are pretty expensive, even used on eBay. (This one is a Lear.) Since it is often pretty hard to test these amps and the problem might be with the head unit, I would love to be able to swap one in from one of my other BMWs, if possible, before forking out any money. I have an '08 E61 and 2 E93s that I can pull amps from to test. Can anyone tell me if the Lear amp in this car and the Harmon Kardon amps in my other BMWs are interchangeable? I do NOT want to go aftermarket so please don't suggest that. An alternative would be to pull the amp and send it off to somebody to test if anyone has a vendor that will test it. Thanks for your thoughts on this. __________________ Current: E70, (2)E93, E91, E61 (2)2002, (2)E28M5, E34M5, E39M5 (11 BMWs total) (2) Alfa spiders, (2) Dodge trucks, Prior: 18 other BMWs
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03-31-2019, 07:32 PM	#2
smass Lieutenant Colonel 398 Rep 1,579 Posts Drives: 06 325i - 10 335i Join Date: Sep 2010 Location: Scottsdale, AZ iTrader: (1) Garage List 2010 E90 335i [0.00] 2016 F15 35i [0.00] 2003 E53 3.0 [0.00] 2006 E90 325i [0.00]	My E90 L7 amp is not the same as my E70 L7 amp. But you can use your E90 head unit to test with your E70.
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03-31-2019, 08:56 PM	#3
Hodgepodge Dude with a lot of BMWs 2 Rep 27 Posts Drives: E93(2),E70,E61,2002(2),++ Join Date: Oct 2011 Location: Western PA iTrader: (0) Garage List 2009 BMW 328i E91 [0.00] 1991 BMW M5 [9.75] 1974 BMW 2002 [0.00] 2002 BMW M5 [0.00] 1988 BMW M5 [10.00] 1988 BMW M5 [9.75] 1975 BMW 2002 [0.00] 2012 BMW X5 [0.00] 2008 BMW 328i Conve ... [0.00] 2008 535i Touring [0.00] 2009 335i Convertible [0.00]	Smassey321 are you saying I can test my E70 amp by plugging it into the E90 amp location at the trunk? That would be a great way to test. __________________ Current: E70, (2)E93, E91, E61 (2)2002, (2)E28M5, E34M5, E39M5 (11 BMWs total) (2) Alfa spiders, (2) Dodge trucks, Prior: 18 other BMWs
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