Folks
Does anyone know how to balance the speaker output on the Plus Four speaker system?? On mine it seems that there is only output from the rear two speakers and nothing from the front ones in the doors. Is it a sealed effort or is there some way of balancing the speakers?

Cheers from a very wet and windy Ireland!!!!

Do you hear anything from the front speakers? E.g. a crack when switching on or off? Could it be that they are not connected?

Same on mine.... I think they all do that Sir 😂😂😂😂

Car radio's accommodate four speakers with fader between front and rear ones. Given the plain audio system on CX models with jack or Bluetooth hookup, I would have thought there should be a configurable fader incorporated in same otherwise what is the point of fitting four speakers

Can't dealer or MMC help?

Worst case MMC have fitted two speaker module and therefore not connected one pair of speakers

Dealer has enquired and got the usual response ---None

Maybe it is a feature. I would email the MMC MD.

Mine only appears to work at the rear. In all honesty until you just mentioned it I had no idea there were speakers in the front. Are they in the doors? I shall need to investigate further!!!!
HB

Font speakers are in the front top par of the door behind the micro-perfored leather.
I have dismounted the first part of the audio system behind the dashboard to fit a DAB system connected with a line jack, unfortunately on this part only 2 cinch are available at the input or output of the volume box system the split 2 to four cinch must be directly at the entry of the audio amplifier .... But this one I don't know where they have hide it .... (Probably behind the central console somewhere)

Surely all features should be tested at final assembly & then again at Dealers PDI, not impressed for what these CX vehicles cost

Neither am I,Jon. Surely it can’t be too difficult to give proper instructions for use and adjustment! Also we need advice as to how to get radio as well as Bluetooth music - it’s a €100k purchase here in ireland after all!!

Cheers!

Getting radio piped through would be relatively easy Robbie once Bluetooth link established from your smart phone. Some have built in FM tuners with headphone lead as aerial. Then you have Internet radio apps although reception via mobile data may be an issue. Finally you have stand alone Bluetooth capable radio modules.

I'm all for adopting latest protocols with in-car entertainment but MMC seem to have latched onto this path whilst stripping the charged for option on Plus Four to a bare minimum, more basic than that offered on Classics.

Richard, what exactly do you mean by your last paragraph

Cheers!

I guess it's curious that older cars could have a normal radio installed, whereas on the CX cars you only get the amplifier and speakers. At least on the Plus Six there is a physical input jack in addition to the Bluetooth input!

Basically as Jon suggests below Robbie.


To be charged for this option on the Plus Four is the final insult. Ironic when the four speaker CX installation appears to be superior to Classics, which is not difficult of course

I haven't found any balance control, however all 4 speakers are working, the front 2 in the doors don't appear to put out much, but the back are quite powerful. No jack is fitted to the later plus 6, just bluetooth.
Mike

Today,I reached out to Marcus Blake the sales manager at the factory—- and ——- surprise , I got an immediate response saying he would check with the tech guys and get back to me.

Credit where credit is due, a most welcome change - I look forward to his further comments

Thanks, Marcus!!

It would be great if you could some how change the back speakers to the front.
I await with great anticipation 😎

News from Marcus Blake at the factory --- Sadly there is apparrently no way to alter the fade between front and rere - it is hardwired directly to the amp. However it may be that the wiring to the front has detatched itself as Marcus says it has happened to a previous car and he suggests having the dealer check, which I will.

Not a customer friendly installation, I'm afraid - I ll have to research another solution!

Thanks for the update Robbie
Am due shortly for the first 1000 mile service so will add it to the list….
HB

Sorry but this sounds like an MMC botch job. If the speakers front and rear were the same impedance and wired in parallel as seems to be the case, it would be reasonable to assume they would have matching sound output. As this appears not to be the case and because of differing locations it would seem their impedances don't match so the lower one gets most of the amplifier power for each side

Very frustrating isn't it....

It is a feature

Richard it could also be because the bluetooth amp that drives four channels does not expose/declare a control that lets you adjust front/rear?
So the smaller speakers fail to match the rear if they are different?

Just a thought.

If we can find the unit, the name and model then there is a chance that there is an App that will allow detailed setup that may assist?

Are you able to find the device type?

Exactly that yes, and doubt there are any configurables given what has been gleaned from the factory.

As always I write first and it takes a week or so for my brain to catch up.

I should have been more specific. When I refer to declaring a control I am talking about over Bluetooth rather than having a knob on it just in case I explained that badly. Is there any way you can find out a make or model of the box? Photos? What it broadcasts on BT when you go to connect to it?

First of all, one has to know what MMC has installed. If it is a 2 channel amplifier, then you have no fader. If you would connect 4 speakers to the two channel amplifier (without fader control - and two speakers per output) then you have to be careful that the total impedance does not fall to 2 ohms. Because then you can listen to 5 minutes of hot music before it grills the amplifier.

I imagine audio electronics is not MMC's niche skill. Nothing mentioned so far suggests other than two channel amplifier and haven't seen any bluetooth hookups that stream other than two channel audio anyway. If so absolutely no chance of external fader.

Heinz's impedance comments are relevant if front and rear speakers are just paralleled up to amplifier each side. Not just for total impedance load but, as already mentioned, for power transfer to each if front and rear speakers have impedance mis-match.

Simplest way to gain the flexibility CX owners appear to seek may be to junk the factory amp and fit Bluetooth/DAB car radio allowing dedicated connections to all four speakers.

There are a lot of companies starting to make specialist out of sight equipment for all the retro and resto stuff out there.

http://www.outofsightaudio.com/ Type 3 is ideal for example.
https://www.amazon.com/Remote-Control-SECRETAUDIO-Hidden-Stereo/dp/B00T8AK7AG
https://rockfordfosgate.com/products/details/pmx-8bb/ (Marine capability for those wet drives)
https://www.memphiscaraudio.com/product-page/mxamcapp-app-controled-headless-source-unit

As you say I doubt the factory wants to spend £500k with Naim working out how to make it perfect in an open top car. However it takes little to get a specialist car audio company to work with you for a week, I would imagine they did that at least. CX is a big step for them and replaced Aero and Trad so they could not have skipped that step?

There is a free MMC upgrade on the way boys...

With all the voices in my head could I please have a pair of them setup for headphones?

The man from Mitsubishi he say yes... you in need of some antiphase sounds

😄😄😄😄

Same problem for me with audio F/R balance I am afraid. The front speakers are definitely connected but the volume output is negligible compared to the rears. During normal driving I at first thought the front wasn't even connected.
The sound quality is pretty atrocious as well - at least compared to any other car - and to be honest I feel a bit of a mug having paid the extra for it. I don't like to go back and check what it cost becasue it will only upset me

On looking for the amp which the factory said was fitted, my dealer came on a "Musicstream" box which seems to be connected to all speakers -- no sign of the stated Kenwood box so no separate feed to front and rear speakers. Looks like a "cheapie" solution to the issue -- not good when one considers the price of the car!!

The Morgan way, spoil the ship for a ha'porth of tar.

Something like this ?
https://www.amazon.com/iSimple-ISBT23-MusicstreAM-Bluetooth-Receiver/dp/B01984EUI6

So if that is what's installed I am guessing you have the left front and rear spliced in parallel into the left channel so no front to rear and likewise the right. This will load the amp as mentioned earlier and it will run hot as each channel is driving the pair of speakers and driving 2ohm load.

Perhaps one option is to replace it with a more complete unit.
1. Amp for four channel with front/rear and left/right individual outputs.
2. Bluetooth input to connect to smartthingy for all music and radio/waze etc.
3. Other inputs in case you do want to wire something in later.
4. Compact to fit into the same place and use the existing speaker cables (or replace them with heavier duty using the existing to pull them through)
5. What are you going to use to trigger it on and off, do you want a manual power or just Bluetooth listen-for-phone as trigger. You may want to inspect the power feed as a result. Ensure there is a good fuse in line even if there is one on the amp!

https://youtu.be/qj4BqMXHCtQ (warning - among the most annoying background music and presenter combo I have seen in ages....)
https://www.amazon.co.uk/Soundstream-ST4-1000DB-Stealth-Channel-Amplifier/dp/B01B9KH1S8

Might be an example but not specifically a recommendation. Just to see if this is down the right track?

Hello,

I can confirm that "musicstream" is what you are connecting to with your smartphone.
The Internet suggests that this is an Isimple unit you are connecting to.

But honestly, my Roadster did not have any audio, so I really enjoy to listen to some music every now and then on the more booring drives.
Especially so since the PlusSix is to quiet in traffic and on longer trips.

That is all I'm expecting and I think no one will buy a Morgan for it's Audio capabilities.

Regards,

Markus

There is apparently a Kenwood box behind the Left (or passenger side for rhd cars)rear speaker - the Musicstream unit goes via a volume box to the Kenwood amplifier and then to the speakers there is no adjustment on the Kenwood Kac -M1824 as far as I can find out.
We haven’t been able to access the Kenwood box as it’s behind the rear speakers and it isn’t clear how to get at it - request to the factory for information has yet to get a reply.

More when I have any update