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Old 08-11-2011, 11:39 PM   #41
Matty_J Matty_J is offline
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Does Rockport Technologies include modest forklift with those asking prices?
How else can one move those beasts?
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Old 08-11-2011, 11:44 PM   #42
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by Matty_J View Post
Does Rockport Technologies include modest forklift with those asking prices?
How else can one move those beasts?
You buy them first and then build a house around them.
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Old 08-11-2011, 11:55 PM   #43
prerich prerich is offline
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Quote:
Originally Posted by Big Daddy View Post
Time alignment and angling of the drivers depends on the height of the ears and distance from the speakers.

As I indicated in Post #1, Richard Vanderseen is the champion of time and phase coherency. He has designed speakers so that you can adjust the backward tilt of the speaker so that all the drivers are perfectly synchronized and their signals converge at the listener's ears. The angle of tilt depends on how far the listener is from the speaker. In their owner's manual, there is a graph that tells you the required amount of offset in relation to the distance of the listening position.

The image is from the [URL="http://www.vandersteen.com/3asigmanual.pdf"]Vandersteen 3A Manual[/

Nice I read some info on his site and he does realize that you lose dynamics (unless you have the Quattro) I thought about using two more DCX2496 units to tri-amp my front array (yes I would need 6 more channels of amplification...no sweat). This would allow the DCX's to time and phase align the Heresy speakers digitally (a guy in HT Magazine did this with his La Scalas) just a thought


Nice I read some info on his site and he does realize that you lose dynamics (unless you have the Quattro) I thought about using two more DCX2496 units to tri-amp my front array (yes I would need 6 more channels of amplification...no sweat). This would allow the DCX's to time and phase align the Heresy speakers digitally (a guy in HT Magazine did this with his La Scalas) just a thought
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Old 08-11-2011, 11:58 PM   #44
crazyBLUE crazyBLUE is offline
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Quote:
Originally Posted by Big Daddy View Post
You buy them first and then build a house around them.
That was good Big Daddy

My Bostons are speaker coherent< The front is curved back & the drivers are all angled differently. Of course they are not $100,000 speakers


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Old 08-12-2011, 02:26 AM   #45
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Quote:
Originally Posted by crazyBLUE View Post
That was good Big Daddy

My Bostons are speaker coherent< The front is curved back & the drivers are all angled differently. Of course they are not $100,000 speakers

[Show spoiler]

Do they weigh 900 pounds each? If the answer is no, they are not coherent.
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Old 08-12-2011, 08:21 PM   #46
Matty_J Matty_J is offline
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Quote:
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Do they weigh 900 pounds each? If the answer is no, they are not coherent.
Oh no Crazy, You're gonna have to start all over. Just leave those Bostons on the curb, and start saving up.
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Old 08-13-2011, 01:09 AM   #47
crazyBLUE crazyBLUE is offline
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Quote:
Originally Posted by Big Daddy View Post
Do they weigh 900 pounds each? If the answer is no, they are not coherent.
Quote:
Originally Posted by Matty_J View Post
Oh no Crazy, You're gonna have to start all over. Just leave those Bostons on the curb, and start saving up.
I guess I will have to build my own I will fill them with lead
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Old 08-17-2011, 07:38 AM   #48
Big Daddy Big Daddy is offline
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Sonist is another company that makes phase coherent speakers.

This is a picture of their Concerto 3 tower speaker. They uses ribbon tweeters and the list price is $3,495 a pair.




http://sonist.com/SonistBrochure.pdf
Quote:
Hardwired First Order Crossovers

With only two crossover elements, a first order coil on the woofer and a first order capacitor on the tweeter, more of the music is delivered to the drivers. All crossovers are hand-soldered with
Cardas Tri Eutectic lead-free solder. The crossover is potted in an epoxy resin to prevent micro-vibrations from degrading the signal, and the pot enclosure is decoupled from the cabinet with neoprene, mounted to the cabinet walls with allen bolts with neoprene washers. Positive and negative wires for the tweeter and woofer are twisted together to prevent inductive signal degradation. Bi-wire and bi-amp capable.
Quote:
Time-aligned ribbon tweeters with very light diaphragms respond quickly up to 40KHz, providing phase-coherent harmonic overtones, accurate timbre, and improved spatialization.

They also make Concerto 2 bookshelf speakers. The list price is $2,495 a pair.


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Old 08-17-2011, 06:25 PM   #49
Matty_J Matty_J is offline
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Those are some gorgeous speakers...and I bet they sound amazing!
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Old 08-18-2011, 02:40 PM   #50
pgblu pgblu is offline
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[QUOTE=prerich;5067118]Nice I read some info on his site and he does realize that you lose dynamics (unless you have the Quattro) I thought about using two more DCX2496 units to tri-amp my front array (yes I would need 6 more channels of amplification...no sweat). This would allow the DCX's to time and phase align the Heresy speakers digitally (a guy in HT Magazine did this with his La Scalas) just a thought


This is one of the reasons I went with the Quatros over the 3A signatures. With a built in sub, you can place the Quatro where it will image the best, and then "tune" the bass to that location. It has been my experience that the best place for imaging is NOT the best place for the best bass. Also, the Quatros have proven to be easier to drive, as the low bass has it's own built in sub and takes some of the load off of the main amplifier.

FWIW, adjusting the angle of the speaker to your listening position is reasonably straight forward with his instructions in the owner's manual. I was "in between" 2 of the spacers and experimented between the 2 to determine the best angle. Well worth the extra effort...
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Old 02-28-2012, 04:06 PM   #51
prerich prerich is offline
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I'm gonna go ahead and do it!!!! Instead of actively crossing over my Heresy speakers, I'm going to install ALK's new Cornscala-Wall Universal crossover (yes it's a 1st order crossover)!
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File Type: jpg Cornscala-wall uni.jpg (22.8 KB, 7 views)
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