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SUPPORT FORUMS FOR DECWARE SPEAKER PLANS >> DECWARE Imperial support forum >> Driver for SO imperial
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Message started by asiquis on 06/30/07 at 20:23:33

Title: Driver for SO imperial
Post by asiquis on 06/30/07 at 20:23:33

I have found this driver would it do the trick for a SO imperial? Thoughts?

Tempest Classic 15"
Overall Dia.: 15-3/16"
Cutout: 13-15/16"
Front Mount Height: 3/4"
Mount Depth: 6-13/16"
Displacement: 5 liters

Specs taken with voice coils in parallel.
Re 3.5 ohms

Le 2.9 mH

Qms 6.7

Mms 195 grams

Qes .40

Cms 0.374 mm/N

Qts .39

Fs 18.8 Hz

Sd 779 cm^2

Vas 317 liters

BL 14.2 N/A

Xmax 16.4 mm one way

EBP 47

SPL 89.1 dB @ 1W/1m

VC Dia. 2-1/2"

Power Rating 750W total

Title: Re: Driver for SO imperial
Post by DaveCan on 06/30/07 at 21:00:08

Steve say's alternate drivers should be chosen based on how well they perform in a 4cubic foot sealed enclosure.. See the ''alternate drivers from Dayton'' thread below yours.. Dave :)

Title: Re: Driver for SO imperial
Post by merry on 07/06/08 at 00:17:17

Hi.
I am a brand new owner of the IMP SO and i would be very happy
if some one could tell me what driver is THE driver for the SO. :)

Title: Re: Driver for SO imperial
Post by dank on 07/09/08 at 21:57:31

As far as I know the one and only "approved" Imperial SO speaker is the Dayton 15" Series II ST385-8 15" available at Parts Express P/N 295-130 for around $100. (Although I don't think Steve has Series II speakers in his Imperial SO's).

Dan

Title: Re: Driver for SO imperial
Post by merry on 07/11/08 at 18:25:53

Ok, but the Vas on the Dayton is : 9.64 cu Ft and Steve was recomending that it would work well in a 4 cubic foot sealed enclosure.
Ain't that a to much of a difference in number's :-?
(rememder i'm a newbie so my questions maybe dumb) ::)

Thanks for the help.

Merry from Sweden

Title: Re: Driver for SO imperial
Post by ZYGI on 07/12/08 at 04:34:26

Merry,

Welcome to the forum!

VAS is the a specific volume of air which has the same compliance as the driver, it does not mean that the driver needs that much air space. With that said, the Dayton driver, which I have put into 4 different IMP SO's does sound great. In a sealed box, not horn loaded it would need a 2.17 CU FT box for the flattest response.

BobZ

Title: Re: Driver for SO imperial
Post by merry on 07/14/08 at 18:30:03

:)
Ok thanks for the tip, now i just need to found 2 clones of the Dayton driver in Sweden :(

Title: Re: Driver for SO imperial
Post by Eli Duttman on 07/14/08 at 19:20:54

Merry,

Perhaps ScanSpeak in Denmark offers a suitable driver.

Title: Re: Driver for SO imperial
Post by merry on 07/30/08 at 21:38:47

How about this one? www.hifikit.se/index.php?id=1194 :)

Title: Re: Driver for SO imperial
Post by Valiant on 08/02/08 at 13:54:53

Interesting driver. Just curious, what is the price in
Euros?
Cheers
Gaz

Title: Re: Driver for SO imperial
Post by merry on 08/02/08 at 16:16:13

:) Just about €66.04