How To Guide Z3 Single Component Speakers Upgrade

ExMX5owner

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Not understanding why everyone is so keen to bypass the amp? I have it in mine (admittedly coupe so perhaps the speakers are better?) and the system sounds bloody excellent - running from the CD43.
Mine sounds great too, running the standard business CD, two small drivers in the doors, one in each footwell 1 behind each seat and the none ported sub in the middle of them. Sounds sweet, I had to replace the sub driver though with two drivers back to back one inverted polarity, as the original had a dual voicecoil driver that took left and right from the rears and combined. These are not available hence the modification. but still I won't change anything..
 
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Zephyr

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Not understanding why everyone is so keen to bypass the amp? I have it in mine (admittedly coupe so perhaps the speakers are better?) and the system sounds bloody excellent - running from the CD43.
Could the coupe act as a dome and transfer the sound better?
The roadster is a bi*** with speakers behind the seats, many sound absorbing areas (hood-seat cushions etc).
and probably the coupe has a better amp and more speakers.
(personally I am keeping the amp - its good for me).
 

Zephyr

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Mine sounds great too, running the standard business CD, two small drivers in the doors, one in each footwell 1 behind each seat and the none ported sub in the middle of them. Sounds sweet, I had to replace the sub driver though with two drivers back to back one inverted polarity, as the original had a dual voicecoil driver that took left and right from the rears and combined. These are not available hence the modification. but still I won't change anything..
Can you say it again as if explaining to a (real) idiot?
my limited understanding tilted my brain.
please? (Will send nudes in pm for your trouble).
 

ExMX5owner

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Can you say it again as if explaining to a (real) idiot?
my limited understanding tilted my brain.
please? (Will send nudes in pm for your trouble).
Hey Stanley, All I,m saying is I believe I have what is fairly standard on most 3,s, I know the HK has a woofer between the two behind the seats, but I believe it is ported down into the seat divider, Mine is the Phillips driven dual vioce coil woofer, that is pionted backwards into the roof fold down area, with a passive radiator pionting forward , or at least that it how it was prior to my modification, So I went from 2x4 Ohm dual coil single driver to 2x8 Ohm seperate drivers back to back in the same unported box, with polarity rreversed on one so they dont fight each other. Much less draw on the amplifier for the better SPL.. I posted a thread here some time ago with that mod I think.. Anyway the nett result was better bass, and tighter mids, I guess because the Amps workload is reduced by the higher impedance thus higher efficiency of the sub.
 
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ExMX5owner

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Ok. I understand! Thanks.
Its important to note that even though a particular driver, bass , mid , not so much for tweets, may have a DC resistance of 4 or 8 ohms nominal, however they are not fed DC, the frequency can be between 20 and 20000 hz, therefor the coil itself acts as an inductor altering the resistance of the coil dependant on frequency, Its not unusual for an 8 ohm driver to drop down to 3 at some frequency. too lower impedance is a strain on any amp.. :thumbsup:. That being said, most cases of poor sound on a 20 plus year old car stereo, will be atributed to buggared drivers, either the cones suspension, or sometimes the cone itself..
 
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Daz7401

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way better than my cheap solution, this has to be one great setup. Please share the connection to the amp, also have the bluetooth to the cd and tempted to try this.
The amp comes with its own loom with ISO connectors. You then need a T connector loom between the headunit and car. I plan to use this one (it has round pins) between the cars loom connector and the adapter loom the Bluetooth kit uses. It should all work but I have not tried it yet. I have used the same amp and connection method in my Smart Roadster and it works well. The amp even takes its power, earth and trigger from this connection.

 

Daz7401

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Not understanding why everyone is so keen to bypass the amp? I have it in mine (admittedly coupe so perhaps the speakers are better?) and the system sounds bloody excellent - running from the CD43.
Hi David, Not sure about everyone else but it was already gone from my car. As you know it’s an import so no contact with the previous owner. It has had an aftermarket headunit at some time. I have found wiring for a reversing camera and either a Dab radio or gps. This was not installed very well and just cut out. The speakers the car came with are just low grade Pioneer and were just spliced in and taped, the camera wire was causing a short.
I think when the car was being prepared for sale they just wanted to get the OEM tape headunit to make a noise.
You know how I like to keep things OEM+ and I almost bought the ‘OEM speaker amp’ to reinstall but I’ve used the Vibe amp before. You’ve heard it in the Smart and to me it sounds good.
This thread talks mostly about the basic set up not the HK with the amp in the boot that I thought you had. I’ve not really listened to any of the OEM systems so can’t comment on their performance. When I was testing with the 4 new speakers and CD43 I could just about turn it all the way up and the sound was nice. I don’t want to drive 20 year old secondhand electronics that hard, the amp can take the load off the headunit.

Darren.
 
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GDavis

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Well Well, this got pretty technical didn't it.
Really interesting how many people have approached this in different ways.
Also how some people quite like the sound as it is (I'm guessing their system wasn't quite as basic as mine.)
Anyway, whatever you do, no matter how much you spend, enjoy!!
Anybody got a reccomendation for an under seat Sub ?
 

Mus Musculus

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Well Well, this got pretty technical didn't it.
Really interesting how many people have approached this in different ways.
Also how some people quite like the sound as it is (I'm guessing their system wasn't quite as basic as mine.)
Anyway, whatever you do, no matter how much you spend, enjoy!!
Anybody got a reccomendation for an under seat Sub ?
We joked about that a bit earlier… But, I don't think you would be able to fit a sub under the seat on a Z3 (or much of anything else for that matter).
 

137699

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Hi David, Not sure about everyone else but it was already gone from my car. As you know it’s an import so no contact with the previous owner. It has had an aftermarket headunit at some time. I have found wiring for a reversing camera and either a Dab radio or gps. This was not installed very well and just cut out. The speakers the car came with are just low grade Pioneer and were just spliced in and taped, the camera wire was causing a short.
I think when the car was being prepared for sale they just wanted to get the OEM tape headunit to make a noise.
You know how I like to keep things OEM+ and I almost bought the ‘OEM speaker amp’ to reinstall but I’ve used the Vibe amp before. You’ve heard it in the Smart and to me it sounds good.
This thread talks mostly about the basic set up not the HK with the amp in the boot that I thought you had. I’ve not really listened to any of the OEM systems so can’t comment on their performance. When I was testing with the 4 new speakers and CD43 I could just about turn it all the way up and the sound was nice. I don’t want to drive 20 year old secondhand electronics that hard, the amp can take the load off the headunit.

Darren.
Ah I thought you only got the amp with the HK setup - didn't realise the non-HK also got an amp... that probably explains it - perhaps the HK amp is more "man for the job" than standard one!
 

GDavis

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yeah I know it's a tight space , but I just thought somebody may have had something installed.:rolleyes:
It's better to ask than spend hours and hours trawling websites :thumbsup:
 

Zephyr

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Well Well, this got pretty technical didn't it.
Really interesting how many people have approached this in different ways.
Also how some people quite like the sound as it is (I'm guessing their system wasn't quite as basic as mine.)
Anyway, whatever you do, no matter how much you spend, enjoy!!
Anybody got a reccomendation for an under seat Sub ?
Pioneer TS-WX130FA (28X20X7) in the rear glovebox space between the seats was the salesman's suggestion.
 

Rodders67

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Circling back… sorry to resurrect this thread but with HK speakers and apparently an Amp between head unit and sub-box it’s worth noting that the ‘99 roadster has pair of 5.25 single coil 30watt / 2 ohm impedance speakers.

Now if you were thinking, I will install two 5.25 40watt / 4 ohm coaxial speakers and see what it sounds like.

From my experience experiment it sounds like muffled garbage.

I know I have a blown driver, and it has been determined to be the rear midrange speaker that is likely blown.

I am seeking advice on how best to access these little bastards without having to remove entire console panels and roll hoops.

Also, if anyone can confirm size and specification, I would appreciate it.
 

Zephyr

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Circling back… sorry to resurrect this thread but with HK speakers and apparently an Amp between head unit and sub-box it’s worth noting that the ‘99 roadster has pair of 5.25 single coil 30watt / 2 ohm impedance speakers.

Now if you were thinking, I will install two 5.25 40watt / 4 ohm coaxial speakers and see what it sounds like.

From my experience experiment it sounds like muffled garbage.

I know I have a blown driver, and it has been determined to be the rear midrange speaker that is likely blown.

I am seeking advice on how best to access these little bastards without having to remove entire console panels and roll hoops.

Also, if anyone can confirm size and specification, I would appreciate it.
sorry for the late answer, I do not have the car anymore so cannot help with this.
 

graeme cook

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Sorry guys i don't even understand what ohms are ? was never into electronics , all all i knew as a 17 year old was watts = loud :whistle:
lol , so simplified the car came with a Sony stereo the metal thing (a amp)? that's attached to the speaker in the foot well do i cut the wires on it bin it and put bigger speakers in ? and just replace the speaker behind my seat ? . sorry for sounding so thick about this but I am . Oh and if i am binning the metal thing In the kick panels what kind of size speakers can I get in there ?
 

Zephyr

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Bin the amp and check the sound before you do anything.
bypassing is easy, there is a thread somewhere in this forum.
An easy way to do it is this one
View: https://youtu.be/J2hWoAt5emE?feature=shared

If you follow these instructions chamces are that you will have a much better sound than before with the sony headunit (they have their own amp).
Many times the metal "thingy" on the footwell is broken alaa the horrible sound in the car.
so to make it simple, you have a head unti that possibly has an outoput of 25X4 watts or best case 45X4 watts. (x4 is number of speakers).
and a broken amp in the footwell
Sending X amount of watts to a broken amp is like restraining a river with a dam.
the broken amp (or not broken but with an output of lets say 10 watts) will let zero to 10 pass through.
as for ohms, never mind them, if you swap speakers just ask for 4 ohms ones, unless you get into the "big amp" wormhole that is another story.
hope I make sense.
 

Zephyr

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Sorry for bad spelling, this old fart is on a mobile device and have no idea where my glasses are.
 
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