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Question Regarding Changing Rear Subs
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Question Regarding Changing Rear Subs
Hi All
I have changed all my speakers except the two subs behind the seats (the ones in the rear bulkhead) which I was going to change to the Audison plug and play speakers, my question is, after looking I cant seem see how you access them, the grill on the front doesn't seem to be removable or am I missing something, so is it a case of accessing them through the rear panel in the boot?
If it becomes a large job to do, I might looking at putting a single one in the ski hatch instead.
Many thanks in advance for any help
Russell
I have changed all my speakers except the two subs behind the seats (the ones in the rear bulkhead) which I was going to change to the Audison plug and play speakers, my question is, after looking I cant seem see how you access them, the grill on the front doesn't seem to be removable or am I missing something, so is it a case of accessing them through the rear panel in the boot?
If it becomes a large job to do, I might looking at putting a single one in the ski hatch instead.
Many thanks in advance for any help
Russell
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Question Regarding Changing Rear Subs
The two subs are screwed from the front into captive nuts set in the steel rear bulkhead that are sealed enclosures..
To get to them you have to take the rear carpeted area out or back enough to get your driver/fingers/subs in
To get the carpet to move you need to remove the two rear speakers, the two rear top plastic trims hiding the top seat belt d ring, remove the d rings, the rear buklhead trim, the roll over hoop trim and the top trim covering the rear central speaker, the 4 luggage cinch brackets and the boot fold over cover and the rear boot cover rear plastic trim..
TIS info covers it all..its a big job, bigger than replacing all the other speakers put together,,figure on 2 days..plus lots of prayers trying to prise things apart like the rear roll over covers..
enjoy
To get to them you have to take the rear carpeted area out or back enough to get your driver/fingers/subs in
To get the carpet to move you need to remove the two rear speakers, the two rear top plastic trims hiding the top seat belt d ring, remove the d rings, the rear buklhead trim, the roll over hoop trim and the top trim covering the rear central speaker, the 4 luggage cinch brackets and the boot fold over cover and the rear boot cover rear plastic trim..
TIS info covers it all..its a big job, bigger than replacing all the other speakers put together,,figure on 2 days..plus lots of prayers trying to prise things apart like the rear roll over covers..
enjoy
-
- Newbie
- Posts: 7
- Joined: Thu Nov 14, 2019 7:53 pm
Question Regarding Changing Rear Subs
Hi rusty. What make and model speakers did u buy, and what were the results, also u running standard radio, CD set up. Cheers John
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Question Regarding Changing Rear Subs
Cheers Phondar, I thought it looked like a lot of work, think I might go down plan B then and put a sub in my ski hatch in the centerPbondar wrote: ↑Tue Dec 03, 2019 10:37 pm The two subs are screwed from the front into captive nuts set in the steel rear bulkhead that are sealed enclosures..
To get to them you have to take the rear carpeted area out or back enough to get your driver/fingers/subs in
To get the carpet to move you need to remove the two rear speakers, the two rear top plastic trims hiding the top seat belt d ring, remove the d rings, the rear buklhead trim, the roll over hoop trim and the top trim covering the rear central speaker, the 4 luggage cinch brackets and the boot fold over cover and the rear boot cover rear plastic trim..
TIS info covers it all..its a big job, bigger than replacing all the other speakers put together,,figure on 2 days..plus lots of prayers trying to prise things apart like the rear roll over covers..
enjoy
Russell
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Question Regarding Changing Rear Subs
Hi John
I have replaced all the main speakers with Audison ones, only the subs to sort, I have changed the amp to a Audison Forza 9 channel and running the subs on a Audison mono block,
I am still running the same head unit, we re set the eq with the Forza software
It sounds superb even with the standard subs, as the footwell ones really go down low, very clear, great separation, loud and punchy ,,,I am just waiting for Audison to bring out the updated bit tune software so I can fine tune it
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Question Regarding Changing Rear Subs
The performance from the factory location subs is disappointing so far even with the Audison subwoofers and a 250w rms class d amp driving the pair..so your solution may be better ...RustyZ4 wrote: ↑Sat Dec 14, 2019 10:42 amCheers Phondar, I thought it looked like a lot of work, think I might go down plan B then and put a sub in my ski hatch in the centerPbondar wrote: ↑Tue Dec 03, 2019 10:37 pm The two subs are screwed from the front into captive nuts set in the steel rear bulkhead that are sealed enclosures..
To get to them you have to take the rear carpeted area out or back enough to get your driver/fingers/subs in
To get the carpet to move you need to remove the two rear speakers, the two rear top plastic trims hiding the top seat belt d ring, remove the d rings, the rear buklhead trim, the roll over hoop trim and the top trim covering the rear central speaker, the 4 luggage cinch brackets and the boot fold over cover and the rear boot cover rear plastic trim..
TIS info covers it all..its a big job, bigger than replacing all the other speakers put together,,figure on 2 days..plus lots of prayers trying to prise things apart like the rear roll over covers..
enjoy
Russell
Question Regarding Changing Rear Subs
Eton, a German company makes direct plug n play range as well, fractionally cheaper than the Audison..I’ve used them with good results..RustyZ4 wrote: ↑Sat Dec 14, 2019 10:49 amHi John
I have replaced all the main speakers with Audison ones, only the subs to sort, I have changed the amp to a Audison Forza 9 channel and running the subs on a Audison mono block,
I am still running the same head unit, we re set the eq with the Forza software
It sounds superb even with the standard subs, as the footwell ones really go down low, very clear, great separation, loud and punchy ,,,I am just waiting for Audison to bring out the updated bit tune software so I can fine tune it
Some people have taken oem mini units as a cheaper solution..
The speaker enclosures with the exception of the floor well speakers are identical across many bmw models..so you can try and find better quality versions of the speakers from other bmw ranges...bit hit n miss..
Question Regarding Changing Rear Subs
When you say you used the equaliser do you mean the Audison equaliser not resetting the OE head unit?RustyZ4 wrote: ↑Sat Dec 14, 2019 10:49 amHi John
I have replaced all the main speakers with Audison ones, only the subs to sort, I have changed the amp to a Audison Forza 9 channel and running the subs on a Audison mono block,
I am still running the same head unit, we re set the eq with the Forza software
It sounds superb even with the standard subs, as the footwell ones really go down low, very clear, great separation, loud and punchy ,,,I am just waiting for Audison to bring out the updated bit tune software so I can fine tune it
- RustyZ4
- Lifer
- Posts: 3622
- Joined: Fri Dec 14, 2007 7:23 pm
- Location: Maidstone, Kent
Question Regarding Changing Rear Subs
Yes, didn’t explain that well, we used the Audison software to flatten out the head unit eq through the amp, the head unit was very on the high treble sidePbondar wrote: ↑Sat Dec 14, 2019 1:42 pmWhen you say you used the equaliser do you mean the Audison equaliser not resetting the OE head unit?RustyZ4 wrote: ↑Sat Dec 14, 2019 10:49 amHi John
I have replaced all the main speakers with Audison ones, only the subs to sort, I have changed the amp to a Audison Forza 9 channel and running the subs on a Audison mono block,
I am still running the same head unit, we re set the eq with the Forza software
It sounds superb even with the standard subs, as the footwell ones really go down low, very clear, great separation, loud and punchy ,,,I am just waiting for Audison to bring out the updated bit tune software so I can fine tune it
And yes Eton do have great speakers that plug and play, a friend of mine has fitted them in his 5 series, very good indeed
As for the subwoofers, the oem ones are not great, but where I changed the footwell ones, they really handle bass well, so just using the subs as a background for them at the moment, I am thinking of putting one in the ski hatch and making an enclosure for it to sit in, as that I think will be the easier (and cheaper) option
Russell
Z4 Mineral Grey, 28i MSport Auto, lots of goodies
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Z4 E85 3.0, gone but now with son
Growing Old is Mandatory But Growing Up is Optional
Question Regarding Changing Rear Subs
The woofers in the floor wells seem to respond well to better speakers and amplification...as standard on the normal 676 hi fi they are driven by one channel in series so no real ‘whumph’ to get them going ..
The real subs seem to struggle due to lack of volume / noisy cabin etc..
I’ll play with the equalisation again when the weather gets better..
The real subs seem to struggle due to lack of volume / noisy cabin etc..
I’ll play with the equalisation again when the weather gets better..