New 15” Driver - CSS SDX15

**hardman** · **04-17-07, 08:42 PM**

I recently built a sealed subwoofer using the Creative Sound Solutions SD12 and am very happy with the results (I will post more on this in a couple of days). Originally, I tried to build an LLT with this driver, but in the end was not able to pull it off.

http://www.creativesound.ca/index.html

However, it appears CSS will soon have a 15” version of this driver with XBL to boot that should be able to pull of the LLT. Below are the target parameters for the new driver. My understanding is this driver will be available next month sometime.

Re: 3.60 ohms (1.8 ohms per coil)
Le: 1.80 mH
Fs: 19.2 Hz
Qms: 3.65
Qes: 0.44
Qts: 0.39
Cms: 0.25 mm/N
Mms: 274.8 g
Vas: 218.44 l
Sd: 790 cm^2
BL: 16.5 N/A
SPL: 87.3 dB@ 1W/1M
Xmax: 30 mm

**Exocer** · **04-17-07, 09:40 PM**

Very good news.

Yes, and Robert is thinking of offering a Tumult/Brahma trade-in program for those who own drivers in need of repairs...etc.

**WillyD** · **04-17-07, 11:50 PM**

**hardman** · **05-10-07, 10:01 AM**

Looks like the new driver should be ready to order next week. Introductory price is $269 http://www.creativesound.ca/ .

I am looking forward to getting this driver and comparing it to my TC2000 and Rl-p15.

**WillyD** · **05-10-07, 02:30 PM**

Excellent news. This looks like it could be THE driver in this price range.

**Exocer** · **05-10-07, 04:47 PM**

I am definitely thinking about adding this driver to my list...I've Already spoken with the brain behind Creativesound.ca about the Trade-in program. Sounds like i'll be taking advantage of that

**WillyD** · **05-10-07, 06:01 PM**

Do it! Do it!

**hardman** · **05-10-07, 08:06 PM**

Looks like the $270 introductory price includes shipping too!

**WillyD** · **05-10-07, 08:43 PM**

Quote:

hardman wrote:

Looks like the $270 introductory price includes shipping too!

Yes, that is a wonderful deal. The driver is practically a drop in for my current TC-2000 sub.

**hardman** · **05-10-07, 08:52 PM**

Quote:

WillyD wrote:

Yes, that is a wonderful deal. The driver is practically a drop in for my current TC-2000 sub.

What type of box/tube do you use with the TC2000 driver? I have a 300 liter LLT, but I think that may be a little large for the SDX15.

**WillyD** · **05-10-07, 09:01 PM**

I have a 336liter net sonosub.

Nah, 300 liters isn't too large at all. Which driver do you have in there now?

**hardman** · **05-10-07, 09:06 PM**

Quote:

WillyD wrote:

Which driver do you have in there now?

TC Sounds 2000 15" subwoofer.

**Ilkka** · **05-24-07, 02:54 PM**

I am trying to get a few of these to Finland ASAP.

**WillyD** · **05-24-07, 05:12 PM**

Quote:

Ilkka wrote:

I am trying to get a few of these to Finland ASAP.

Excellent!

**hardman** · **05-25-07, 07:51 AM**

My SDX15 shipped yesterday. I should have in sometime next week. I will post more when the driver arrives.

**håkan** · **05-25-07, 12:15 PM**

Quote:

Ilkka wrote:

I am trying to get a few of these to Finland ASAP.

i need two to sweden

**Ilkka** · **05-25-07, 06:13 PM**

Quote:

håkan wrote:

i need two to sweden

You need to contact CSS then.

I will put mine (2 of them) in the 5 cu ft opposing firing enclosure I have. It could be a little bit larger, but I think I can push the Q close to 0.7 with some filling (and DCX2496 will do the rest). That way we also have a direct comparison to TC-2000 drivers. Naturally GP measurements will follow.

**brucek** · **05-25-07, 10:08 PM**

I'm confused.

When I look at the designs for both sealed and ported boxes on the CreativeSound web site, they show an internal magnet brace that fits snuggly around the magnet and then another brace presses against the back of the magnet and the rear of the box.

I've never seen this before? What's the purpose and does anyone do this?

magnet brace.jpg

brucek

**håkan** · **05-26-07, 05:14 AM**

Quote:

brucek wrote:

I'm confused.

When I look at the designs for both sealed and ported boxes on the CreativeSound web site, they show an internal magnet brace that fits snuggly around the magnet and then another brace presses against the back of the magnet and the rear of the box.

I've never seen this before? What's the purpose and does anyone do this?

Attachment 3401

brucek

it is for the 12inch

**brucek** · **05-26-07, 06:20 AM**

Quote:

it is for the 12inch

Yeah, I realize that. I don't think the design concept would be unique to a 12" though.

My question is about the purpose and necessity of a magnet brace.

brucek

**Ilkka** · **05-26-07, 06:27 AM**

Quote:

brucek wrote:

Yeah, I realize that. I don't think the design concept would be unique to a 12" though.

My question is about the purpose and necessity of a magnet brace.

brucek

The purpose is to support the weight of the motor/magnets. A heavy motor puts a lot of stress into the frame when mounted horizontally. Though I've never done it and I haven't seen many broken frames either.

If you're planning to do it, I would definitely put some weatherstripping etc. in between the magnet and the enclosure. Otherwise this connection may transmit pretty strong vibrations to the enclosure.

**Exocer** · **05-26-07, 09:52 AM**

I doubt the magnet brace sees any direct weight from the motor/magnet assembly since the front baffle holds the driver in place. It seems like a typical window brace but with a cutout for allowing it to be placed a little bit closer to the front of the enclosure and as a support for the 2nd enclosure brace.

**brucek** · **05-26-07, 10:57 AM**

Quote:

I doubt the magnet brace sees any direct weight from the motor/magnet assembly

They do tell you to have it snug, but it wasn't the vertical brace with the 'snuggly' fitting hole for the magnet that I found as strange as the horizontal brace that is so tight as to connect the magnet to the back wall of the box.

What for? Do these drivers have unusually weak frames......

magnet.jpg

brucek

**Geoff St. Germain** · **05-26-07, 11:23 AM**

I would have thought the reasoning for the window for the magnet to be like exocer said. I really don't know what the reasoning would be for a magnet support when it is already connected to the box via the driver's aluminum frame/basket.

**canaris** · **05-26-07, 07:11 PM**

Would'nt a magnet support be a source of box noise.. ?

I doubt it's for support.

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