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Old 4th June 2007, 10:04 PM   #1
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Default Time-Phase Aligned DIY options

Hi! Just curious, are there any good DIY options for a time/phase aligned speaker, al a Vandersteen, Thiel, Green Mountain Audio, Meadowlark, etc.? I'm in the market for a new pair of speakers and am contemplating pursuing the life-time goal of a 100% DIY rig! Not sure about the DIY phono cartridge, but I digress
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Old 5th June 2007, 04:09 AM   #2
Nanook is offline Nanook  Canada
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Default yup..one for sure.....

use a full ranger and don't worry about it.
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Old 5th June 2007, 05:25 AM   #3
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Default Re: yup..one for sure.....

Quote:
Originally posted by Nanook
use a full ranger and don't worry about it.
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Old 5th June 2007, 05:27 AM   #4
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Use a FAST system and an active subtractive topology.

Regards

Charles
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Old 5th June 2007, 06:19 AM   #5
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I don't really see much point in time alignment anyway. In practical terms it's pretty much the same as just tilting the speakers back slightly to change the angle of the various interference lobes in the room.

Sure, it might make a difference, but in order of importance I'd probably put time alignment near the bottom of the list. Above that you'd have things like: driver selection, box design, crossover topology, baffle diffraction and off-axis frequency responses...

Not that I have anything against the idea of time alignment. I just don't think it's as important as most of the other stuff.
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Old 5th June 2007, 06:46 AM   #6
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Have a look at my Delta design. I'm currently working on a simpler 3 way version.
Cheers
David
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Old 5th June 2007, 01:56 PM   #7
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Quote:
Originally posted by phase_accurate
[B]Use a FAST system and an active subtractive topology.
wow, that went totally over my head... any links that offer a good explanation?

Quote:
Originally posted by CeramicMan
[B]I don't really see much point in time alignment anyway. In practical terms it's pretty much the same as just tilting the speakers back slightly to change the angle of the various interference lobes in the room.
well, I guess the phase alignment is the issue that I seem to be more sensitive too, but the manufacturers above have always sounded right to my ears. I guess first-order crossovers, from what little I know, are also an important component of these designs.

I'm just getting my feet wet here, so take it easy on me
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Old 5th June 2007, 02:14 PM   #8
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Quote:
Originally posted by David Gatti
Have a look at my Delta design. I'm currently working on a simpler 3 way version.
Cheers
David
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wow, looks like I have a lot of reading to do!
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Old 5th June 2007, 02:30 PM   #9
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I was involved in two time aligned speaker developments in the past.
Whatever one can hear or likes, from a technical point of view I'm convinced that with a non layed back tweeter it would have ended in a different speaker.
Maybe not bad as well, but the tweeter displacement makes it easier to achieve a nice sounding design.
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Old 5th June 2007, 02:38 PM   #10
banana is offline banana  Hong Kong
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Works good for me. But the choice of suitable drivers are very limited.

I used XT25, wideband enough for 1st order acoustic highpass, but doesn't handle high power.
The midwoofer is CB17RCY, which doesn' t suffer from severe cone break, but without the excusion ability of model 7 incher.

http://s161.photobucket.com/albums/t...jan/cb17_2way/
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