Amp location + aftermarket options

eli371 · 09-27-2020, 03:53 PM

Just wondering if anyone knows where the amp is located? I'm assuming in the trunk somewhere.

Also, anyone know if there's any aftermarket replacement options?
the local dealer list price for oem is $2k+.

DavesZed · 09-29-2020, 03:43 AM

"IF" your Z has an amp then you'll find it by looking in the trunk, look to the bulkhead. If you have the hatch (or the recess if not) it is behind the bulkhead covering to the right side.
https://www.newtis.info/tisv2/a/en/e...i-roa/2bvd9wFK

With your MULF or Combox being on the left side
https://www.newtis.info/tisv2/a/en/e...i-roa/GZLja1dj

accts4mjs · 10-01-2020, 05:09 PM

I just installed an aftermarket amp, component speakers in the front, and an 8" sub in the trunk. If you have any questions I'm happy to answer them. My wife said I should have posted pics and explanations along the way but I didn't think anyone would need them because I saw so little chatter about audio upgrades. Let me know what I can do to help out. It's a lot of work but it's also about 1000x times better than stock

My setup was the Professional Hi-Fi 16 speaker setup with Amp on the right and the MULF on the left side (in the trunk).

eli371 · 10-08-2020, 10:52 PM

Quote:

Originally Posted by accts4mjs

I just installed an aftermarket amp, component speakers in the front, and an 8" sub in the trunk. If you have any questions I'm happy to answer them. My wife said I should have posted pics and explanations along the way but I didn't think anyone would need them because I saw so little chatter about audio upgrades. Let me know what I can do to help out. It's a lot of work but it's also about 1000x times better than stock

My setup was the Professional Hi-Fi 16 speaker setup with Amp on the right and the MULF on the left side (in the trunk).

Did you have to program/code in the amp?
Where did you purchase the amp? Could it be used as a replacement for stock?
Thanks for the help!

accts4mjs · 10-12-2020, 10:38 AM

I bought it off of Amazon. It's the Rockford Fosgate P300X2 Punch 300 Watt 2-Channel amp. I replaced the tweeter, mid-range, and woofer components in the front door and kickpanel. I disconnected the middle speakers and rear speakers and subs (hah! those barely produce sound). I also installed an 8" enclosed powered RF sub in the trunk.

As far as programming goes, because it's a digital input signal (and I don't know of a way to decode that) I had to use the high level outputs from the amp and connect them to my amp and sub.

I also ran a single powered line to the front of the car (one for L, one for R) that went into crossovers for my speakers that I purchased (Hertz speakers). There is only one output line that goes to the door and I had to repurpose an extra line and run a new pin + line to the harness in the door ($4 from a junkyard gave me plenty of pins and lines to run into the harness, that part was pretty easy once I had a plan).

Does that help? What type of system do you have and what year of car?

https://www.amazon.com/gp/product/B00BF6I0RS

09-27-2020, 03:53 PM	#1
eli371 Private 35 Rep 69 Posts Drives: 2022 m240i Join Date: Oct 2017 Location: Canada iTrader: (0)	Amp location + aftermarket options Just wondering if anyone knows where the amp is located? I'm assuming in the trunk somewhere. Also, anyone know if there's any aftermarket replacement options? the local dealer list price for oem is $2k+.
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09-29-2020, 03:43 AM	#2
DavesZed Lieutenant 143 Rep 508 Posts Drives: BMW E89 23i, 2011 Join Date: Nov 2015 Location: Grantham, UK iTrader: (0)	"IF" your Z has an amp then you'll find it by looking in the trunk, look to the bulkhead. If you have the hatch (or the recess if not) it is behind the bulkhead covering to the right side. https://www.newtis.info/tisv2/a/en/e...i-roa/2bvd9wFK With your MULF or Combox being on the left side https://www.newtis.info/tisv2/a/en/e...i-roa/GZLja1dj __________________ Dave 2011, E89 23i, Grey with Red leather.... relatively basic (getting less and less basic with every new retrofit)! My Z4 E89 YouTube channel... https://www.youtube.com/channel/UCtt...0vHFUQnoEvKB2Q
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10-01-2020, 05:09 PM	#3
accts4mjs New Member 0 Rep 7 Posts Drives: 2009 Z4 35i Join Date: Oct 2017 Location: Idaho, USA iTrader: (0) Garage List 2009 BMW Z4 335i [0.00]	I just installed an aftermarket amp, component speakers in the front, and an 8" sub in the trunk. If you have any questions I'm happy to answer them. My wife said I should have posted pics and explanations along the way but I didn't think anyone would need them because I saw so little chatter about audio upgrades. Let me know what I can do to help out. It's a lot of work but it's also about 1000x times better than stock My setup was the Professional Hi-Fi 16 speaker setup with Amp on the right and the MULF on the left side (in the trunk).
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10-12-2020, 10:38 AM	#5
accts4mjs New Member 0 Rep 7 Posts Drives: 2009 Z4 35i Join Date: Oct 2017 Location: Idaho, USA iTrader: (0) Garage List 2009 BMW Z4 335i [0.00]	I bought it off of Amazon. It's the Rockford Fosgate P300X2 Punch 300 Watt 2-Channel amp. I replaced the tweeter, mid-range, and woofer components in the front door and kickpanel. I disconnected the middle speakers and rear speakers and subs (hah! those barely produce sound). I also installed an 8" enclosed powered RF sub in the trunk. As far as programming goes, because it's a digital input signal (and I don't know of a way to decode that) I had to use the high level outputs from the amp and connect them to my amp and sub. I also ran a single powered line to the front of the car (one for L, one for R) that went into crossovers for my speakers that I purchased (Hertz speakers). There is only one output line that goes to the door and I had to repurpose an extra line and run a new pin + line to the harness in the door ($4 from a junkyard gave me plenty of pins and lines to run into the harness, that part was pretty easy once I had a plan). Does that help? What type of system do you have and what year of car? https://www.amazon.com/gp/product/B00BF6I0RS
	Appreciate 0 Quote