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Adire Extemis 6 Specs / Designs


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76 replies to this topic

#1 of 77 Seth_L

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Posted September 22 2004 - 01:27 PM

http://www.adireaudi....eFrameText.htm

Fs 30 Hz
Qms 2.54
Qes .383
Qts .332
Vas 33.2 liters
SPL 86 dB @ 1W, 1m
Power 100W RMS/300W Peak
BL 9 N/A
Xmax 13mm one way
Sd 140 cm2
Vd 364 cm³
Le 0.13 mH
Re 7.02 Ohms

Currently on Pre-order...

Can this 8 ohm driver be used in an MTM, or does a 4 ohm driver work better for a MTM?

Any chances for Adire to offer some reference designs (like the MTM with a ribbon tweeter from CES)?

#2 of 77 Brian Bunge

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Posted September 22 2004 - 01:34 PM

Why wouldn't it work in an MTM? All you need is an amp that can handle a 4 ohm load.
Brian Bunge
RAD Home Theater

#3 of 77 James W. Johnson

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Posted September 22 2004 - 01:53 PM

If Adire designed it then it kicks ass.


Too bad they won't hook us up with some 12" mids and sell a Kit2121 Posted Image

#4 of 77 Seth_L

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Posted September 22 2004 - 02:08 PM

Quote:
Why wouldn't it work in an MTM? All you need is an amp that can handle a 4 ohm load.

Well, I was unsure if the drivers in an MTM are normally put in parallel or series.

#5 of 77 Robert_Gaither

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Posted September 24 2004 - 06:52 AM

Do they have a tweeter to match?

#6 of 77 DanWiggins

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Posted September 24 2004 - 08:11 AM

Seth,

It'll work fine in parallel for a final 4 ohm load.

James,

It's called the HE12.1...Posted Image

Robert,

Good things come to those who wait! Won't say when, but tweeters are on our screen...

Dan Wiggins
Adire Audio

#7 of 77 Seth_L

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Posted September 24 2004 - 12:05 PM

Dan,

I ran your suggested 21L/33HZ Fb design into Unibox and got the following graphs.

Posted Image

Posted Image

Posted Image

I have 2 questions:
1) Isn't the port too small?

2) Doesn't the driver run out of excursion at low frequencies (as it unloads below the tuning frequency)? Is this something to worry about with full range speakers, or are the graphs not correct?

#8 of 77 Scott Simonian

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Posted September 24 2004 - 02:21 PM

Dan, quick question if you are still reading these. I was reading about the size of the motor. It is tiny! Do you know what the mounting depth of the Extremis 6 is compared to the Koda 6?

The extremis sounds like something I'd like put in my car. I have a 2002 Dodge Neon. I think the woofers on the side are 6 1/2 inches and I wouldn't mind having the woofers stick out a little. I just dont know the depth of these new mids.
Another supporter of 1080p and uncompressed multi-channel sound!

My Twin 18's. 50cuft of box, tuned to 11hz and with 2k watts on tap.

#9 of 77 DanWiggins

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Posted September 25 2004 - 02:18 AM

Seth,

A straight 2" port is too small. That's why we spec'd a 2" flared port. Like the ones we'll soon carry from Precision Sound Products. Chuffing isn't an issue.

Can you bottom the driver below tuning? Yeah, you can. Shouldn't be too much of a surprise, I can do that with a Shiva or Tumult, too...Posted Image These are very wide range drivers, but they still have limits. So if you want them for complete full-range use, you may need to look at doing an MMT or MTM. But 100W down at 25-26 Hz is a LOT of power for any < 10" driver.

Of course, getting 100+ dB SPL (closer to 107-108 dB SPL in-room) from a single driver at 30 Hz is pretty cool...Posted Image

Scott,

I don't remember what the depth is exactly, but it's in the Adire Driver Size guide (in the Tech Section of our website). I think it's around 3.75", but don't hold me to that...Posted Image

Dan Wiggins
Adire AudioPosted Image

#10 of 77 Scott Simonian

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Posted September 25 2004 - 02:46 AM

Thanks Dan for refering me to a source for the size of the extremis. I didnt think you had it on there yet.

Here is the size of the extremis compared to a Koda 6:
(first is extremis, then koda 6)

Overall Diameter:7" E6
6.59" K6
Cutout Diameter:5.7875" E6
5.65" K6
Overall Height:3.875" E6
3.125" K6
Motor Height:1.65" E6
1.25" K6
Motor Diameter:2.76" E6
4.5" K6
Mounting Depth:3.75" E6
2.875"K6
Driver Weight:4 lbs for both

Sweet. Now I just need to get some measurements of the driver sizes for my car.
Another supporter of 1080p and uncompressed multi-channel sound!

My Twin 18's. 50cuft of box, tuned to 11hz and with 2k watts on tap.

#11 of 77 Seth_L

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Posted September 25 2004 - 04:10 AM

Dan,

Thanks for the answers. I want to build a pair of these to be my PC speakers. I was thinking to try them with no sub at first, and then add a sealed tempest to them if I want more oomph. But, know my bent for crazyness I'll probably just build the sealed Tempest from the start. Posted Image After all I wouldn't want to lose any content below 30Hz. Hehe Posted Image

#12 of 77 Seth_L

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Posted October 05 2004 - 09:42 AM

Dan,

Any ideas when those 2" Flared ports and reference designs will be available?

#13 of 77 Seth_L

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Posted October 09 2004 - 12:31 AM

^ *bump* ^

#14 of 77 Scott Simonian

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Posted October 09 2004 - 05:26 AM

Seth,

I am sure that the reference designs will be available in time for the Extremis 6 shipping.

As for the 2 inch port. Here is one from parts express. It should be the exact same thing.
Another supporter of 1080p and uncompressed multi-channel sound!

My Twin 18's. 50cuft of box, tuned to 11hz and with 2k watts on tap.

#15 of 77 Seth_L

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Posted October 09 2004 - 05:55 AM

What can I say...

I'm impatient...

I've got my two Extremis 6 on order and I'm ready to make some uber heavy 1.5" thick MDF cabinets Posted Image

#16 of 77 GrahamT

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Posted October 09 2004 - 06:14 AM

oops.

#17 of 77 GrahamT

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Posted October 09 2004 - 06:15 AM

Quote:
I've got my two Extremis 6 on order and I'm ready to make some uber heavy 1.5" thick MDF cabinets


Me too. Posted Image Last time Dan said he was still looking at tweeters for an MT. Morel, Hiquphon, and a Peerless or two and the like. I'm hoping that he picks something in the $20-50 ish each range.

#18 of 77 Michael R Price

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Posted October 09 2004 - 07:04 AM

"I'm hoping that he picks something in the $20-50 ish each range. "

That may not be possible unless we wait for Adire's own design of tweeter. I mean, if the midwoofer is that good, it wouldn't make sense to pair it with a $40 tweeter. Didn't Dan say the XT25 wasn't good enough? Posted Image

#19 of 77 GrahamT

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Posted October 09 2004 - 07:21 AM

"Didn't Dan say the XT25 wasn't good enough?"

Yes, but he did say he likes the Peerless which fits my budget nicely.Posted Image

Dan said a couple weeks ago:
Quote:
The "short list" is the Hiquphon OWII, Peerless 2978 (really low budget, but great SQ even for an old driver), Morel MDT30S, Morel MDT44, and the ScanSpeak 9500.
Of that list, the Peerless and MDT44 have the "in" IMHO, because not only are they very good performers, and prices attractively, but are also video shielded. The Hiquphon is a great driver, too, and would be my top choice for non-video shielded use.


#20 of 77 Seth_L

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Posted October 09 2004 - 10:43 AM

I wonder why he is preferring the OWII over the OWIII?





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