Sub woofer fitting question

pvr · Post by **pvr** » Sat May 25, 2024 6:25 pm

I have the subwoofers which I am going to add to the 6 speaker setup and I think Bigwinn did this as well at some stage if I remember well.

Questions are:

- Does anyone have a link to the mounting screws for the speakers themselves as they didn’t come with the speakers
- I want to join to the cables of the existing rear speakers, do I need to take all the boot apart to get to those or is there an easier way to find them elsewhere? Not fancying too much taking the parcel shelf out.

Thanks chaps

bigwinn · Post by **bigwinn** » Sat May 25, 2024 6:55 pm

A great upgrade even without the amp

I spliced the wires to the upper speakers behind the headrests

From memory it’s easier to go in from the boot instead of taking the plastic trim off behind the seats

Go from the bottom of the boot upward should be ok to leave the shelf in place

Bolts for the speakers 07129904343
The grommets for the bolts to fit in (won’t be there in the car) 07129904343

bigwinn · Post by **bigwinn** » Sat May 25, 2024 6:58 pm

That’s pasted wrong

Wait one

bigwinn · Post by **bigwinn** » Sat May 25, 2024 7:00 pm

Expanding nut 65138387414

bigwinn · Post by **bigwinn** » Sat May 25, 2024 7:03 pm

Screws to hold in place are 07147155310

pvr · Post by **pvr** » Sat May 25, 2024 7:48 pm

Thanks Stuart, that is great. Will lift the carpet instead.

Do you remember the colour of the wires to go into? The new speakers came with some wires attached so will splice into those.

pvr · Post by **pvr** » Sat May 25, 2024 7:49 pm

And thanks for the part numbers, will scour eBay for those

Zedebee · Post by **Zedebee** » Sat May 25, 2024 8:06 pm

Surely the subs won’t work without a separate amp to power them? The 6-speaker head unit doesn’t have enough juice. It’ll do the door speakers just fine, but subs have a different resistance to everything else.

bigwinn · Post by **bigwinn** » Sat May 25, 2024 8:07 pm

Yes bud

99% sure drivers side is blue:blue/brown and passenger is yellow:yellow/brown

You can’t miss them they are entwined together

bigwinn · Post by **bigwinn** » Sat May 25, 2024 8:08 pm

Zedebee wrote: ↑Sat May 25, 2024 8:06 pm Surely the subs won’t work without a separate amp to power them? The 6-speaker head unit doesn’t have enough juice. It’ll do the door speakers just fine, but subs have a different resistance to everything else.

It’s worked good in both cars I’ve done

Distorts a little if it’s turned up to 11 but for my listening pleasure it’s suffice

Zedebee · Post by **Zedebee** » Sat May 25, 2024 8:12 pm

Good to know. Since I've had a Z4 with the 10 speaker (non-DSP) set up, I had resolved never to buy one with the basic system again. Maybe that’s not such an impediment.

bigwinn · Post by **bigwinn** » Sat May 25, 2024 8:14 pm

You can just see them in this photo here

I think the blue (drivers side) is blue:blue/violet

But you can see how they are run spiralled together

: IMG_0238.jpeg (97.2 KiB) Viewed 387 times

pvr · Post by **pvr** » Sat May 25, 2024 9:35 pm

Thanks Stuart, that makes it easier to fine. I did spot the blue twisted wires in the loom when I took the cubbies out but they would be very difficult to splice in there so will pull the carpet up at the back to get them from there.

First order the screws though.

Barty · Post by **Barty** » Tue May 28, 2024 10:46 am

Subscribed. Interesting to hear about the results and ease of installation. Got a set kicking about at home that could really do with an installation.

Alternatively, how hard is it to retrofit an aftermarket amp into the system?

pvr · Post by **pvr** » Tue May 28, 2024 10:56 am

Just mind that there are two different sets available, one that will work without an Amp, and one that needs the Amp to work.

From Zedebee's infinite wisdom source:

Part numbers for the non THX subs are: 65126915840 to 6/06, 65134167255 from 6/06 to 04/07, and 65139143269

Z4-forum.com

Z4-forum.com