[Mushy007]

I've done some searching on the forum and the internet and have been unable to confirm the speaker ohm value.

Having taken it out, hoping that it would be on it, annoyingly its not. However the process to replace is very easy

Has anybody done this or able to confirm whether it is 2 or 4?

My system is standard, no HK.

[AntF32]

Would like to know as well.

My F48 20D, none HK sounds like a bag of balls, I'm no audiophile but do appreciate good sound. Previous cars had HK or the equivalate and the F48, given it's internal space sounds crap.

Am looking at a couple of options but want to keep it OEM.

[Ridin'Dirty]

Bavsound reports that their replacement sub speakers are 2 ohm. Since they are available separately from their full speaker package, I would assume that they are the same rating as the OEM ones.

[Encanto]

No OEM amp woofers = 4ohms
HiFi woofers = 2ohms
HK woofers = 4ohms

Originally Posted by Mushy007

I've done some searching on the forum and the internet and have been unable to confirm the speaker ohm value.

Having taken it out, hoping that it would be on it, annoyingly its not. However the process to replace is very easy

Has anybody done this or able to confirm whether it is 2 or 4?

My system is standard, no HK.

[Mushy007]

Originally Posted by Encanto

No OEM amp woofers = 4ohms
HiFi woofers = 2ohms
HK woofers = 4ohms

Cheers, Ill be getting the 4's then.

[Mushy007]

Anyone got thoughts on these for the front and rear doors, I have the base stereo and these look a good option?

https://www.eton-gmbh.com/en/product...uct/b-100-x-w/

[Mushy007]

Received my Eton speakers for the front today, fitted them and did a few videos, to show the difference.

Base stereo:-

Left - Eton vs Right BMW:-

Both fronts with Eton units:-

Off to order another set for the rears and the subs

All plug & play.

[Humpus]

Sorry to post in an old thread, but I'm looking to upgrade my speakers as well so this seems very promising!

My car has the Hifi system but I think it sounds pretty bad to be honest. Makes me wonder how awful the standard sound must be ...

I was wondering if Etons would be compatible with my car as the impedance of the subwoofers and possibly the door speakers will be different.

Edit: According to the PDF on their website, it should be fine.

Important to note however:
For the Hifi system (SA676): the optionally available B100 XHP midrange crossovers are NOT required, as appropriate active filtering is already carried out in the original BMW amplifier
For the standard audio system: Please note that an additional BMW B100 XHP high-pass crossover must be installed when operating the midrange speakers on the original wiring harness using the original head unit (without amplifier). This is not included in the package and must always be purchased separately.

Also, as of 09/2020 there is a revision (improved) B100 XHP due to problems (crackling noise at high volume) with the original ones.

You can find all the info on this page.

So it seems like I'm installing some B100 XW's, without the high-pass crossover. If I like the fronts, I'll do the rears too

[mrpingu]

Originally Posted by Encanto

No OEM amp woofers = 4ohms
HiFi woofers = 2ohms
HK woofers = 4ohms

Does anyone have source on this?

Also given your quote in the other topic;

Originally Posted by Encanto

The HiFi(676) OEM amp can be swapped directly with an HK(674) OEM amp -205W vs. 360W. HK(674) is stable at 2ohms (HiFi woofers are 2ohms).

It will improve the sound of HiFi OEM speakers some for the cost, just do not expect a radical improvement. A good upgrade is swapping the OEM amps and replacing the HiFi OEM tweeters with aftermarket/filters, nothing else.

Bimmertech says Mini F56 uses HK system and that is 2ohm if HK system, 4 if base. F56 share subwoofer with F48

he difference between woofers made for cars with an amplifier and without one lies in their impedance. Weaker power sources (like the iDrive head unit compared to the 674 Harman amplifier in the case of MINIs) are not capable of driving lower impedance woofers. That’s why BMW opted to use 4 Ohm woofers in all of its base stereo cars, while Hifi 676 and Harman 674 systems have been designed to use 2 Ohm woofers – since the amplifiers present in these systems are capable of handling bigger loads. Our Alpha One Amplifier also works best with 2 Ohm woofers, nonetheless it is also fully capable of driving 4 Ohm woofers too thanks to its ample power reserves.

Read more here
https://www.bimmer-tech.net/blog/ite...r-sound-system

[Encanto]

Understand that a HiFi(676) system is not an HK(674) or a HK(688) system.

Originally Posted by mrpingu

Does anyone have source on this?

Also given your quote in the other topic;


Bimmertech says Mini F56 uses HK system and that is 2ohm if HK system, 4 if base. F56 share subwoofer with F48




Read more here
https://www.bimmer-tech.net/blog/ite...r-sound-system

[mrpingu]

Originally Posted by Encanto

Understand that a HiFi(676) system is not an HK(674) or a HK(688) system.

Yes I am fully aware of that but still the specs are contradicting in what you say and what bimmertech says so that is why I asked for the source.

Mini F56 uses code HK 674 and in that case mentions the source I quoted above that the woofers are 2-ohm. You say that on F48

Base = 4ohm woofers
HiFi = 2 ohm woofers
HK(674) = 4 ohm woofers


Bimmertech says
Base = 4 ohm
HiFi = Doesn’t mention HiFi for F56 platform
HK(674) = 2 ohm

In other words your claim contradicts them. Also you claim that HK amp (674) is stable at 2 ohms which makes me think that the HK system woofers in a F56-based car like the F48 is 2-ohm not 4-ohm. But then again I don’t have the hardware and I cannot measure it so I have to rely on information written by others like Bimmertech and you. That is also why I am asking where you got that information from, did you measure it yourself or did you read it at other place as well?



Quote to the relevant parts

Harman Kardon (S674A) – the better of the two available MINI sound systems which exists in F-Series MINIs with the ‘674’ option. It has 12 Harman Kardon speakers:
- 2x Front Door Midrange + 2x Front Door Tweeter
- 2x Rear Door Midrange + 2x Rear Door Tweeter
- 1x Dashboard Midrange + 1x Dashboard Tweeter
- 2x Underseat Woofer (2 Ohm)
It’s worth noting that the Harman Kardon option 674 audio system found in MINI, 2-Series and i3 BMWs differs greatly from the Harman Kardon system listed under option 688. If you've experienced what the 688 system sounds like in the big BMW sedans or SUVs, and compare that to the 674 system thinking they’ll be more or less the same – you've most likely already figured out they’re quite dissimilar. The amplifier used in 674 Harman Kardon vehicles is more like the one used in option 676 Hifi BMWs, with much less power than the 688 Harman Kardon counterpart. It features an 8-channel amplifier connected to the head unit (located in the trunk area), however, only 7 of the 8 channels are used