Eclipse TD712z

JRKO · 23rd August 2005, 03:32 PM

Has anyone heared these?

They are single driver units and supposedly FR with amazing imaging. The cabinet is a complex casting with various parts including a clemping system for the driver with a weight that is larger than the driver/magnet assembly to damp all unwanted resonence. The dtiver is 12cm.

www.eclipse-td.com/e34_td712z/index.html

How good are they? They retail for £3000!

Could the design ideas be used to get the very best from a single FR driver in a diy cab?

soongsc · 23rd August 2005, 04:30 PM

I wonder if good quality bass is possible with enclosures like that?

JRKO · 23rd August 2005, 05:39 PM

Boom

Here is the unit opened up.

JRKO · 23rd August 2005, 05:44 PM

notice the large weight directly behind the driver.

It extends into the pole peice vent. It is tapered at the back, not only to fit the casing but to break up any remaining standing waves that the rear shell did not already kill. So the driver essentially never gets a wave refletion hitting it

The frame with the legs bolts to the front section of the cabinet and secures the DRIVER directly to the stand!

soongsc · 24th August 2005, 12:47 AM

It looks like a closed box system to me, don't see any vents used to extend base?

JRKO · 24th August 2005, 06:02 AM

spec sheet says
6ohms
83.5dB/W/m
40Hz-20kHz

I hae no idea if the box if vented or not. All I know is that they have made a lot of effort in minimising vibrations, damping the driver and making the hole shebang as dead as possible.

If problems like internal reflections, vibration etc are minimised as much as possible I guess the driver can give its best.

Also having such a small (read no) front cabinet area the driver must be extreemly directional.

40 Hz is pretty low, especially for a 12cm driver in such a small (assumed) sealed enclosure.

Would taking ideas to get the driver as stable as possible make a major difference?

Also these guys follow 'time domain theory'

I dont get it

soongsc · 24th August 2005, 09:05 AM

With that kind of effeciency, it might be possible with a full range driver.

JRKO · 24th August 2005, 09:21 AM

I was thinking of a W3-871S to start with.

soongsc · 24th August 2005, 10:47 AM

That's a lot smaller than 12cm.

JRKO · 24th August 2005, 11:44 AM

I was going to try to implement some of the ideas in a smaller and cheaper speaker and then try it with something bigger.

Do you have any other ideas for drivers?

I was thinking about a translam cabinet to make the shaping easier using glass fibre on the inside and outside to make it stiffer. I will try to get a friend who has a lathe to turn a hunk of something he has laying around for the rear weight/phase thingy!

How does that sound?

23rd August 2005, 03:32 PM	#1
JRKO diyAudio Member Join Date: Dec 2003 Location: U.K.	Eclipse TD712z Has anyone heared these? They are single driver units and supposedly FR with amazing imaging. The cabinet is a complex casting with various parts including a clemping system for the driver with a weight that is larger than the driver/magnet assembly to damp all unwanted resonence. The dtiver is 12cm. www.eclipse-td.com/e34_td712z/index.html How good are they? They retail for £3000! Could the design ideas be used to get the very best from a single FR driver in a diy cab? __________________ In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home

23rd August 2005, 04:30 PM	#2
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	I wonder if good quality bass is possible with enclosures like that? __________________ Hear the real thing!

23rd August 2005, 05:44 PM	#4
JRKO diyAudio Member Join Date: Dec 2003 Location: U.K.	notice the large weight directly behind the driver. It extends into the pole peice vent. It is tapered at the back, not only to fit the casing but to break up any remaining standing waves that the rear shell did not already kill. So the driver essentially never gets a wave refletion hitting it The frame with the legs bolts to the front section of the cabinet and secures the DRIVER directly to the stand! __________________ In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home

24th August 2005, 12:47 AM	#5
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	It looks like a closed box system to me, don't see any vents used to extend base? __________________ Hear the real thing!

24th August 2005, 06:02 AM	#6
JRKO diyAudio Member Join Date: Dec 2003 Location: U.K.	spec sheet says 6ohms 83.5dB/W/m 40Hz-20kHz I hae no idea if the box if vented or not. All I know is that they have made a lot of effort in minimising vibrations, damping the driver and making the hole shebang as dead as possible. If problems like internal reflections, vibration etc are minimised as much as possible I guess the driver can give its best. Also having such a small (read no) front cabinet area the driver must be extreemly directional. 40 Hz is pretty low, especially for a 12cm driver in such a small (assumed) sealed enclosure. Would taking ideas to get the driver as stable as possible make a major difference? Also these guys follow 'time domain theory' I dont get it __________________ In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home


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24th August 2005, 09:05 AM	#7
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	With that kind of effeciency, it might be possible with a full range driver. __________________ Hear the real thing!

24th August 2005, 09:21 AM	#8
JRKO diyAudio Member Join Date: Dec 2003 Location: U.K.	I was thinking of a W3-871S to start with. __________________ In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home

24th August 2005, 10:47 AM	#9
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	That's a lot smaller than 12cm. __________________ Hear the real thing!

24th August 2005, 11:44 AM	#10
JRKO diyAudio Member Join Date: Dec 2003 Location: U.K.	I was going to try to implement some of the ideas in a smaller and cheaper speaker and then try it with something bigger. Do you have any other ideas for drivers? I was thinking about a translam cabinet to make the shaping easier using glass fibre on the inside and outside to make it stiffer. I will try to get a friend who has a lathe to turn a hunk of something he has laying around for the rear weight/phase thingy! How does that sound? __________________ In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home

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