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tehskeo 05-08-2011 08:55 PM

Subwoofer install!
Hey all,

I did a quick search and couldn't find a thread relevant to my question, so here goes:

I have an e36 sedan and I would like to install a subwoofer. I will be running the signal cables from the head unit under the carpet and under the rear seats to the trunk. However, I have no idea how I will fasten the amp and sub in the trunk.

Can I screw the amp into the rear seats? I have no idea what material is behind there. I think I will screw in large velcro straps so that I can remove it all if I need to.

Does anyone with experience have any ideas? How do you normally secure a sub enclosure?


noodles101 05-08-2011 09:06 PM

i used to have a 96 328i with 2 10" subs
is urs the newer gen ones where the rear seats fold down?

and how big is ur sub box. ? 1 sub or 2 sub. ?

bcuz i had the ported 2 10" sub box.. the subs fit perfectly between the shock towers in the trunk . so i didnt have any problem for the sub to move around..

plus subwoofers are usually really heavy and box is carpetted so it usually does not move around at all.

propr'one 05-08-2011 10:14 PM

You can screw it into the rear seats. (drill holes first, some parts of the seats have more backing than others. Dont use screws over 3/4 inch). Mine are just bungee'd in for easy removal. Velcro may work but you'd need a lot of it.

tehskeo 05-10-2011 12:19 AM


Originally Posted by noodles101 (Post 1499906)
is urs the newer gen ones where the rear seats fold down?

No, unfortunately the seats do not fold down. It is a newer gen e36 though... it was made in the 3rd last month of e36 production in 1998! :)

I think that screwing the amp into the rear seat is the best option. As for the sub, I'd like the option of removing it quickly if I have to, so I think I'll try and jury rig a way of securing it. If anyone has done it in an e36, please chime in!

I am not sure on the exact enclosure dimensions as I am getting it from a friend and I have not seen it yet, but it is a single Alpine 12" sub and a Rockford Fosgate 325.1 amp.

noodles101 05-10-2011 02:04 PM

I had my amp and capacitor screwed ontop of my sub box.
So incase I wanna take it out all u gotta
Do is unplug the wires and bam lol

agardo 02-19-2012 11:49 PM

3 Attachment(s)
I've got a sub enclosure box with three 10"ers... Mounted the amp to the enclosure. And then made two bracket supports and drilled them into the floor to prevent the sub from moving..let me go take a pic to show you

ac_2007 04-25-2012 12:01 AM

Sorry if this has been covered, but I distinctly remember a thread on bimmerfest (or was it bimmerforums?) that showed each specific location for the subwoofer rattles and explained how to eliminate them.

I believe the guide was based on an E36 or E46.. anyone know what I'm referring to?

agardo 04-03-2014 05:19 PM

no but quite some rattle comes from the rear license plate and fuel cap door. I placed some chair leg scuff pads around those areas and a lot of the rattle disappeared. You can always check for loose wires (from your install mostly) which sometimes rattle or even in your sub enclosure..

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