First off the cab, the Audiotechnology Cquenze 15G52, with the SD motor. Commonly referred to as a 4" driver, but has a 155mm basket diameter and 96cm2 of cone area.
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Next is the Audiotechnology Cquenze 23I52, also with the SD motor. Commonly referred to as a 8" driver, but with a 230mm basket diameter and greater then 200cm2 of cone area. Also has 1.5" of peak to peak extension......
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The two of them together
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Now these arent off the shelfers either. We had them made to spec (in one of the photos, you can just make out the unique build number). Took about 6 months too, but I'm happy as Larry (most of the credit goes to Adam and Pete, superb fellas to go through all the rigormarole).

Just in case you dont recognise them, they look similar to Dynaudio. Per Skaaning and his father Ejivid (sp?) designed them, and are also responsible for creating Dyn and Scanspeak. The SD motor is technology Ejivid has used since he worked at SEAS.

High-end speaker sets that use these include the Sonus Faber Extrema (and now, my car).

motor structures certainly look beefy matt.
can we get some better top shots?

good luck with the installation

sweet jeeezuz brother!

just give me a call when you get sick of them and want to upgrade....

They look pretty small Matt, I expected something a lil more extreme.
Major let down bud.





How deep are they?
I don't even think I could fit that 4" in my doors.

You are going to need a bigger boat!

Seriously - what is the advantage of the larger magnet on the driver?? Power handling?? Sensitivity??

put them in a pic with something like a 242 driver so we can get a relative idea of the size....they still look pretty impressive

they down right fantastic - an absolute pita to install, but still....mighty impressive.

had a look at the website and specs looks very good too - flat response 90-5000Hz on a 7"
converting the euro prices, its around $400/7" woofer + shipping

is that about right matt? (please pm, suddenly intrigued by this product)

I'll see if I cant get better piccies on the weekend for you all. Comparison shots to the Dyn is something I've considered as well.

As for pricing, if you get them direct from AT in Denmark (be warned, bit of effort) then the entire lot (both mids and midbasses) will set you back around $2k Aussie.

Personally, I think thats pittance for such an incredible unit, especially when you see the price of the competition (such as Rainbow, Dyn Esotars etc.)

And if you think the FR curve looks good, have a look at the distortion plots and impedances curves floating around the net. Whoa.

Very nice Matt!!

Luke

I have a stain on the front of my pants now - thats not something that happens very often. It takes more than a fair bit to get me excited about speakers these days.

Next time im in WA im coming for an audition!

whoa, they look beasty. i love how you know what's what, and can sort the wheat from the chaff, and come up with something special like this. i don't think i'd fit them in my car, but i can only imagine the performance.

awesome stuff! they make my Dyn's look...anorexic.

so... thems some impresive speakers you got there. The Corollas won't know what hit it.
There is so much merit from oversized drivers, control, balance, headroom.. its all there in a nice package.

They do look a lot like the scanspeaks, I wouldn't have a hope of fitting them in my car though!

now we wait till he's run them in, then pay a visit to the car with screwdrivers

screwdrivers... nah, I'll just take my ears and a nice disc.

We wanted to see something like this, hey Danny!!

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Yes it is an 8" driver from the same people, one of there more extreme designs.

Lol, thats the Flexunit, not the Cquenze, with an oversized (which in reality is an over-oversized) motor.

Difference being? The Flex has the modular basket, the Cquenze has the cast version. Plus the Cquenze has an extended response in the frequency ranges. That thing is simply a hardcore midbass unit, and be honest, no-one can fit that in their doors.....

so saiz the owner of drivers with arguably phatest motor stucktures on this side of the equator....

ps, what the plan for door treatment?

Damn Matt .... those things are nuts!!

We might have to organise a bus trip over to the west and have a listen when you've finished

Alrighty, some comparison shots for you all!!!

Here is the midrange standing next to the Dyn MD142.
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And standing next to a Dyn MW150 and a DD W6.5 Midbass
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Cone to cone with a MW150 (the Dyn is to the right, with the shallower cone profile)
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....and standing tall against the Dyn MW162 (a 7" midbass)....
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Now onto the midbass....
This is Pete (who'se no small spring chicken) holding the basket of the 8"
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And next to a DD W6.5, which is very impressive in its size as well...
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And my old midbass (currently running) eyeing off the new midbass.....
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Alan Id be keen!

I love the drive across the nullarbor - its freaking awesome!

/starts packing his sh!t ready for the trip

Nice, very similar ascetically to dyns!

Do you have the physical dimensions of those available matt?

better yet, can you give us the full custom specs you ordered, plus the manufacturers contact details and also your credit card details

^^^^ what he said, i want some.......

why do u want matt's custom specs - who's to say that the sound produced by his custom speakers is going to suit ur tastes or application?

go to the website, look at the 'base' specs (which are fricken amazing) and if u feel like it, contact the manufacturer and tell them what u want from the speakers - i'm sure they will be more than happy to enter into discussion with about what changes may be made to give u the outcome u desire

I think he was just havin abit a joke, But it would be interesting what the spec's are like on them. Id be keen on seeing what theyve changed.

^^^What ~spyne~ said, clever guy.

mail@audiotechnology.dk Everytime I've used this email address, Per Skaaning himself has replied, and usually overnight.

My specs were 15G521506SDK I 0.3 8ohm and 23I522006SDK I 0.32 8ohm

Translated, these are a 150mm driver (15), with a 110mm ext. dia./52mm int.dia magnet (G), a 52mm dia. coil (52), 15mm tall coil (15) and a 6mm high gap (06). Included is the SD motor (SD) and a Kapton former (K). Dunno what the I and the 0.3 means exactly, but I have an Aluminum VC, with faraday rings, and a total nominal impedance of 8 ohms.

Obviously, for the other driver, its 230mm (23), the I magnet (134/50mm ext to int dia) with 52mm coil (52), 20mm tall VC (20) and a 6mm gap (06). Added is the SD motor, and a Kapton former too (SDK). Also 8ohm nominal impedance and Aluminium VC.

Both pairs are matched within tolerance.

You can have almost anything you want, within reason, and bound by physics. Different sizes, different cone materials, different magnetic structures. All it comes down to is cost.

Dimensions are
23I52:
230mm in diameter for basket.
100mm from bottom plate to ring in depth
140mm in diameter for clearance of magnet

15H52:
155mm in diameter for basket
80mm from bottom plate to ring in depth
120mm in diameter for clearance of magnet

As for the T/S specs, I can let you know (if you want?) when I test these puppies out. Kirk is sending us his tester, so hopefully we can get some good numbers.

Matt, those things look sensational - I can only hope that they sound as good as they look!

Have you still got the ribbons in the front?

Last time we spoke they were still in boxes but I see that you have had them installed since then.

Yup, Ribbons are in. I adore them, will never go back without a fight!

So much detail retrieval, so easy to listen to, so natural and when blended properly, so right.

Looking cool Matt, bigger midbass is going to be sweet.

I take it Simmo is doing the install?

hopefully one day i'll find the time and money to do some more in this hobby again.

I havn't been following your posts but I assume from reading this the new install idea is
Ribbon Tweeter + 6" midrange + 9/10" midbass?

what amps your running these days? something special no doubt?

Juls

Some interesting looking drivers indeed, and no doubt they will perform interestingly as well.

Just curious, what is the cone material on those versions? From the pics it looks like maybe some type of poly blend?

Good luck with the instal - i doubt you will dissapoint

P.s.
That 15" Flex unit looks interesting!

u extremist matt,when are u gonna put in the 8" in ya doors

Jump over here for the install http://www.mobileelectronics.com.au/forums...howtopic=539411

Its a ribbon plus 4" plus an 8" (yes, they are classed as a 4 and an 8 ). Amps are Arc Audio 4200SE's.

That flex unit looks and models well, but its too rich for my taste. I honestly dont think you need to spend that much for good bass, especially considering your midbass will be doing the majority of the work.

Cone material is a patented polypropelene mix, reinforced with magnesium. Its a 2nd to 3rd Generation rework of the Dyn cones, and are lighter, stiffer, less energy storage and breakup better. Honestly, the cone is one of the reasons why these drivers are so good, unlike any other driver I've come across, these are predictable and behave exceptionally well. Find me another driver that behaves this well, at any price point!!

Seas excel?

The Seas Excell aren't the best behaved drivers around, by any means. At least not out of the box - they require quite a deal of effort to tame.

As for drivers that are better behaved then these - I've seen drivers with better response curves, but then of course we all know that frewuency response isn't the only facter to considere I don't know enough about these in other areas of driver performance (distortion, etc) to compare them any further with other drivers.

All I do know is that the people who build them tend to build very nice speakers, so for the time being I'm going to assume they will be very nice!

Interesting, you've seen the response curves on Matts custom made drivers... which he hasn't even seen?

Wow, you really are almighty!!

You're almost right. The Seas drivers are as close to perfect as you'll get on the market, within their given frequency spectrum. Pure pistons right up until the breakup point, and countless testing has shown it.

Unfortunately, the Seas units breakup hard, and require a lot of effort (mainly notch filters, impedance correction circuits and the like) to really decrease this. You can avoid it altogether by crossing them over harder, further away from this breakup node, but then you're moving away from the 'perfect' system, which is a phase perfect single reproduction point (ie. more speakers). That, and the FR spectrum will be much smaller (heaps smaller then the AT, for example).

The breakup of the Cquenze is extremely soft, and doesnt audibly affect its overall response when suited to the correct enclosure. A lot of people who use these, dont use anything other then a single 6dB/oct (like an inductor) on the top end to allow gentle rolloff with a perfect phase response. Its the cone, and the motor technology, that facilitate this.

I think (although may be wrong) that Matt was referring to the base Cequenze range when he made this statement.

As such, my comment was referring to the base Cequenze range.

I apologise, I should have made myself more clear. I just assumed that people would realise that if im comparing data, then it's data that exists.

i saw these 1st hand today and had a visual comparison against my sls......depth there aint much in it.
maby 5mm either way.....but they look nice as....the sls has a wider surround and the AT have like this cool foam around it between the spider and the magnet thing.....

either way i think they will be worth the money......

I got custom motors, not custom cones! That statement was referring to the overall behavior of the unit as a whole. Ignore Danny, he's stirring

There are various measurements around the place that demonstrate the capability of these, and when you find them, compare to the plots for other drivers out there. Not just FR plots, but WF, Distortion, CMS/KMS/LE/BL (from Klippel) and Polar/Phase patterns. Trust me, you'll be hardpressed to find another driver thats comparable. They do exist, but I've never encountered them myself.

And for those who asked for it, Kirk has kindly lent me his T/S tester, which I've been playing around with all day to come up with some fairly good numbers

Mids
Revc = 3.4 ohms
Fms = 67 Hz
Zmax = 8.8 ohms
Qes = 1.02
Qms = 1.66
Qts = 0.63
Le = 0.07 mH (at 1 kHz)
Vas = 5.9 L ( 0.2111 ft^3)
BL = 4.1 N/A
Mms = 12 g
Cms = 463 uM/N
Kms = 2160 N/M
Rms = 3.0263 R mechanical
Sensitivity= 88 dB @2.83Vrms/1m

Midbasses
Revc = 3.5 ohms
Fms = 50 Hz
Zmax = 9.2 ohms
Qes = 0.73
Qms = 1.19
Qts = 0.45
Le = 0.065 mH (at 1 kHz)
Vas = 34 L ( 0.2111 ft^3)
BL = 5.7 N/A
Mms = 21 g
Cms = 473 uM/N
Kms = 2100 N/M
Rms = 5.6 R mechanical
Sensitivity= 93 dB @2.83Vrms/1m

HOLY !O@I#!@)#!@&#!!!!!!!!!!!!!

Damn man, specs look insanely impressive!
Talk about efficient midbasses!!!!

Got capabilities to take the above mentioned measurements (WF, distortion, Klippel, etc...?)
I'm guessing maybe not the Klippel

No question

The only reason I limited my comments to the response is becuase that was the only data I had of the brand to compare

Looking at some of the gear these guys have been responsible for in the past (Scanspeak, Peerless, etc), another speaker line of their own could only ever be impressive!!

Would be great to be able to hear the car one day, but given how often I go interstate (twice in my 24 year lifetime) it probably won't happen anytime soon!

One way or the other, we all know you have the knowledge to make it work, so with the right gear as well I'm confident it will be 'nice'

4ohm nominal impedence = Re around 3-3.5ohms

peaks of 9ohms???....crap thats sooo low i can not believe it i was expectiving 15ohms or something of that magnitude or even higher. Peak of 9ohms when the nominal impedence is 8ohm...sorry thats not right, so they MUST be 4ohm drivers.

Le lower than expected too!!!!

wow they should be great let us know who it all goes

yep, you'd expect they'd be 4 ohm drivers from those specs, but it depends on the average in the usable frequency range.

sure won't need much to push those cones in and out.

hey muzzy i have never gone interstate. i was born in melbourne, came back to wa wen 9 weeks old n never gone back.

when i do you must all show me around:)

oh yea matt the spec look impressiver. if i knew what it all ment:)

I'll dig up some links around the place. I simply dont have the capability to take the Waterfalls (CDS plots), but I've seen them. With an acceleration factor of around 420 m/(s²·A) for the midbass, I can assure you the energy content is lost quickly. Nothing compared to say, the Pioneer TS-101 or the Seas Excel, but this is a rubber-mix surround with a PP cone.

Same with the distortion and Klippel (who needs money?).
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Courtesy of NPDang over at DIYMA for the 4/5". If you jump over to the site, take a look at the T/S specs for this. Much different to my own, I think his were off-the-shelfs.
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Again, courtey of NPDang over at DIYMA for the 8". Damn, this thing looks soooo good....

I too was scratching my head at the very low Revc as well, but I'm telling ya, the box (and my request) says/was 8ohm......

EDIT ***here are some CSD/Distortion plots from Zaphs. Take note they are only of the 7" though. The website I originally found with the 15G, doesnt seem to exist anymore...
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mmm lots of pritty colours