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CSS Creative Sound Solutions (CSS) is a service-oriented provider of high-value speaker components for the DIY loudspeaker builder

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Old 12th February 2012, 05:02 PM   #41
Mark Kravchenko --- www.kravchenko-audio.com
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Dave will most likely be your best bet. Sounds like he is close. I see your on the island.

There will be a center channel design released soon. I did that a few weeks ago. Everything will come in it's due time.

What the response shows is what has been happening in every room I have set these up in. A very flat response. If you have software capable of properly simulating these drivers you will find that there is a higher level of efficiency in some areas than others. The low end of the response is being propped up by the horn and boundary reinforcement.

So your raw 2 Pi calculation while it has merit, is not reflecting the entire acoustical loading. You are not modeling the baffle loading, and the room boundary reinforcement.

94.5 has been measured at one meter. I have some of the measurements saved, exporting them is the fun part. I'll see what I can do.
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Old 12th February 2012, 06:49 PM   #42
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I'll roll my own design. So no rush on producing your center channel design. Thanks though.

Dave likely won't have anything built for them before I need to choose. I'll ping him anyways.

I'll stick with the LD tweeter, but may have to use a different mid. I think a 6" with high effeciency will be more appropriate. Thanks for your time anyways.
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Old 12th February 2012, 07:18 PM   #43
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Default LD25X tweeter

Are there any data and frequency response graph and ts parameters on the LD25X? Or does anybody know how low this tweeter can be crossed first or second order? The "datasheet" at the CSS website does not seem to work. Thanks.
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Old 12th February 2012, 09:09 PM   #44
Mark Kravchenko --- www.kravchenko-audio.com
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There is a data sheet up. I emailed it to Bob and verified it this morning.

The only thing missing is a good frequency response graph. Graphics problem. Should have a new one soon.

Maybe try a refresh on your browser?
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Old 13th February 2012, 04:54 AM   #45
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Thanks, the link works now. Looking forward to seeing the frequency response graph with and without the faceplate. I also see now that the tweeter is in some sort of waveguide faceplate.

Although, if the XBL really makes this tweeter significantly "better" (crosses lower with less distortion) than all other tweeters, I'll have to buy a pair and find out myself.
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Old 15th February 2012, 04:22 AM   #46
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Jeff Bagby has posted some additional info on the tweeter over at the PE forum...
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Old 15th February 2012, 07:39 PM   #47
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Thanks for the heads up Wushuliu. Curious why the OP does not respond to any of the queries. I almost feel like why bother if he doesn't.
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Old 15th February 2012, 08:04 PM   #48
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Quote:
Originally Posted by ultrakaz View Post
Thanks for the heads up Wushuliu. Curious why the OP does not respond to any of the queries. I almost feel like why bother if he doesn't.
I think CSS is a one-man operation more or less. I am sure he has far, far better things to do than field endless queries on the interweb - especially if he values his sanity (and yes, therefore I do think Mark Fenlon a bit of a nutter ).
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Old 15th February 2012, 09:05 PM   #49
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Quote:
Originally Posted by wushuliu View Post
I think CSS is a one-man operation more or less.
And his computer is currently down.

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Old 15th February 2012, 09:47 PM   #50
chrisb is offline chrisb  Canada
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Originally Posted by wushuliu View Post
I think CSS is a one-man operation more or less. I am sure he has far, far better things to do than field endless queries on the interweb - especially if he values his sanity
tru dat

Quote:
(and yes, therefore I do think Mark Fenlon a bit of a nutter ).
that's a compliment, right?
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