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Multi-Way Conventional loudspeakers with crossovers

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Old 19th September 2010, 11:01 PM   #7321
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Just looks like an expo/hypex about the size of Erik's old trax midbass horns or the DuMoulins that inspired them.
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Old 19th September 2010, 11:34 PM   #7322
ScottG is offline ScottG  United States
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Just looks like an expo/hypex about the size of Erik's old trax midbass horns or the DuMoulins that inspired them.
Other than the look of the Gamma's (finish quality), nothing new there at all.

The Alphas on the other hand are a bit different in their form factor. Look a bit closer.
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Old 19th September 2010, 11:58 PM   #7323
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[QUOTE=Lynn Olson;2305930]First Question: I've sold my first pair of LO15's, and will sell the second pair as well. I custom-ordered four of them, and the project has taken a turn away from the OB concept due to my unwillingness to go down the path of active equalization.

The change in direction of the project is not a reflection on the drivers; from the feedback I've gotten, the drivers are sonically outstanding, with the hallmark TD15M sound in an OB driver. Many people like OB's, and I'm pleased that AESpeakers is offering these drivers as part of their product line. The attitude I have against equalization is my problem; many people are happy with digital or analog equalized OB systems.

Second question: The Ariel was a good design for its day, and I waited patiently for Scan-Speak/Vifa/Seas drivers that were more efficient and just as flat as the 5.5" Vifas that were an essential part of the Ariels. Well, that day never came.

The drivers that followed were no more efficient, and were less flat thanks to the fad of more rigid but also more resonant cone materials - which in turn demanded much more complex crossovers to remove the artifacts of the breakup region. The key concept in the Ariel - which is applied in the new project - are wideband drivers with well-controlled rolloff regions, thus simplifying the crossover and also allowing a higher level of parts quality. Bass and midbass drivers with well-controlled rolloff regions are still pretty rare, and more rare in the high-efficiency realm.

As for drivers that are closest in spirit to the 5.5" Vifas, and at a higher level of quality, I'd look at the Skaaning Flex-Units. I've heard these, and they are very, very good, although not as cheap as the original Vifas. But Skaaning has the right idea; drivers with very good self-damping that don't require elaborate crossovers.

QUOTE]

Have you seen these?-
http://www.jantzen-audio.com/downloa...8_Aug10_v3.pdf

Troels Gravesen designed, built by seas. Troels liked the vifa c17 drivers and made these to get a driver with the family sound I believe.
Expensive though.
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Old 20th September 2010, 12:34 AM   #7324
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Quote:
Originally Posted by ScottG View Post
Look a bit closer.
Oh, wow, they're oval. Big deal.
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Old 20th September 2010, 04:06 AM   #7325
CLS is offline CLS  Taiwan
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Interesting and beautiful horns indeed, and....

it had been brought up several hundred pages back:Beyond the Ariel

This thread is indeed too long!
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Old 20th September 2010, 04:53 AM   #7326
ScottG is offline ScottG  United States
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Oh, wow, they're oval. Big deal.
You didn't look far enough.


It's a dual 18 inch design (likely BMS).

1 Driver on each side of the cabinet, segmented with opposing horns (top and bottom) and a compression partition that reveals only half of the driver.
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Old 20th September 2010, 04:56 AM   #7327
ScottG is offline ScottG  United States
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Originally Posted by CLS View Post
Interesting and beautiful horns indeed, and....

it had been brought up several hundred pages back:Beyond the Ariel

This thread is indeed too long!

Bah, that was 2 years ago!
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Old 22nd September 2010, 12:05 PM   #7328
Elias is offline Elias  Finland
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Hi,

It's a lengthy document !

May I add a simple solution, a sort of an all-in-one picture showing time dependent comb filtering of a direct signal and a reflection:

Click the image to open in full size.
- Elias


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Old 23rd September 2010, 05:58 AM   #7329
mige0 is offline mige0  Austria
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Hi,

It's a lengthy document !

May I add a simple solution, a sort of an all-in-one picture showing time dependent comb filtering of a direct signal and a reflection:

Click the image to open in full size.
- Elias

Thanks a lot for sharing this pix Elias !

I was highly tempted to use it, but on the other hand, I dindn't want to stick *your* feathers at *my* hat - as they say.


It tells the whole CMP story I needed several pages for in a single plot.

Michael
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Old 23rd September 2010, 03:38 PM   #7330
Pano is offline Pano  United States
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Cool graphic Elias, thanks.
I do have one big problem with it, tho. Color. I think it might work better in black and white. Because yellow appears so bright, it makes the graph hard to read at a glance. The 0dB areas appear "lower" than the -15dB yellow areas. Do you see what I mean?

So either keep it monochrome or maybe have yellow as 0dB and drop into blue from there (no red). Just a suggestion.
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