Hemp Acoustics New Lineup for '08 - diyAudio
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Old 6th January 2008, 04:23 AM   #1
sfreak is offline sfreak  Australia
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Default Hemp Acoustics New Lineup for '08

I just stumbled upon these on the e-speaker website. The Extremis lives on? CSS SDX7 still looks way better IMHO.

No actual hemp by the looks. 5.25, 6.5, 8 & 10" designs based around XBL (Not XBL^2?) motor topology. 10" Sub looks the most interesting out of the lot for me. Should be interesting when we get the measurements and see how well they do go.

No specifications I can find on the net, check out the picture from below....

http://www.e-speakers.com/Presenting-Hemp-2008.jpg
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Old 6th January 2008, 05:21 AM   #2
BudP is offline BudP  United States
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Well, looks like at least one and maybe two are from ADI, Dan Wiggins newest venture
http://www.acousticdev.com/
And another looks a lot like a Tang Band 10" version of their long throw W8 740P.
http://www.partsexpress.com/pe/showd...number=264-854
All makes some sense, as Hemp and ADI principals have a history, back into the Adire days. And, ADI and Tang Band are also good friends.

Bud
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Old 6th January 2008, 06:48 AM   #3
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Default Re: Hemp Acoustics New Lineup for '08

Quote:
Originally posted by sfreak
The Extremis lives on? CSS SDX7 still looks way better IMHO.
AFAIC the SDX7 is the spiritual successor to the Extremis.

Just this afternoon we were excercising our 1st SDX7 proto-woofer (14 litre sealed). What this can do is impressive -- and that with just a real cheap plate amp. Of course i can never leave well enuff along and i have a 2nd proto of a modded* SDX7 to install tomorrow. That the SDX7 works so well in a (small) sealed box (and an even smaller aperiodic box), and the XBL2 gives the latitude for a bit of boost makes it a great woofer to work with.

*(i'm not really happy with the noise the carbon fibre strands make, but it seems there is a pretty easy fix for that. And i strongly suspect that without the strength to mass ratio of the CF we wouldn't have the other positive attributes of this driver.)

dave
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Old 6th January 2008, 06:49 AM   #4
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Quote:
Originally posted by BudP
And, ADI and Tang Band are also good friends.
I believe that TB was the OEM for the Extremis.

dave
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Old 6th January 2008, 07:22 AM   #5
sfreak is offline sfreak  Australia
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Well there you go. Never did know where Dan Wiggins ended up.

I should hopefully get around to playing with the SDX7s in the coming weeks. Dave, what is the difference in sound regarding the carbon fibre, and say a paper woofer? Yet to hook one up and give it a go.

And going by the ADI site, looks like the Extremis is still around? Plus that Horizon 100 is an interesting looking midrange. Looks like a shallow mount and all.
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Old 6th January 2008, 07:36 AM   #6
BHTX is offline BHTX  United States
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Awesome. I wonder what that BOM 12 could do?
..Might make for an interesting high output setup.
Looks like it might handle everything above the very lowest octaves, all the way up to a high-end compression driver, no?
Anyway, I'm glad to see that Mr. Wiggins is still doing his thing.
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Old 6th January 2008, 09:08 AM   #7
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Quote:
Originally posted by sfreak
Dave, what is the difference in sound regarding the carbon fibre, and say a paper woofer?
Been a long time since i heard an extremis, and i'm not done playing with the SDX7 yet so i'll rerserve judgement. Also need a better amp on these (we got one of the Keiga 2.1s to try out. Cab'y really recommend them (at least the sat amps)

Quote:
And going by the ADI site, looks like the Extremis is still around?
Only if Dan changed his mind and got more made -- and last i heard he was more interested in staying a consultant.

dave
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Old 6th January 2008, 09:38 AM   #8
Nanook is offline Nanook  Canada
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Default just a slight word of caution...

remember that Perry sometimes likes to tease a bit ...but may not get some of these released for public consumption for some time.

stew
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Old 7th January 2008, 12:54 AM   #9
CSS/XBL is offline CSS/XBL  Canada
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I am eagerly awaiting Dave's modifications to the SDX7 (which was not designed by Mr Wiggins nor built by TangBand). Mr Wiggins is, however, currently doing design work for me and the SDX10 will ship in late February. Other new product samples are being discussed this week at CES and there are 6 more products being considered over the next few months. These include a couple of 8", a new PR, an XBL^2 tweeter, a plate amp, etc. There is also the RoHS compliant version of the WR125ST which will have the new open basket used on the FR125SR.

Stay tuned.

Bob
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Old 7th January 2008, 10:11 AM   #10
Luke352 is offline Luke352  Australia
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The 10" looks like it is using a JBL frame. Do JBL do any buildhouse work? They do have some experience in not necessarily XBL technology but Differential Drive which I guess uses similar design goals.
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