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Old 22nd April 2012, 01:15 PM   #1
tvrgeek is offline tvrgeek  United States
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Default midrange recomendations

I have not really followed midrange advances as I too have been misguided by the 6"- 1" expected current trend. I have reason to believe there are serious issues here so am looking for a 500 to 5K midrange of very low distortion and flat enough as to not require multiple networks to tame it. My goal is to keep the really high energy 2K to 4K out of the tweeter. Any thoughts on preferred drivers?
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Old 22nd April 2012, 01:46 PM   #2
Face is offline Face  United States
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Scanspeak 10F.
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Old 22nd April 2012, 02:05 PM   #3
tvrgeek is offline tvrgeek  United States
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That one did catch my eye, along with the Seas Prestige FU10RB-H1600-08 and Tang Band W3-1318SA and Mark 3.5". I have had no experience with any of them.
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Old 22nd April 2012, 03:06 PM   #4
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Eton 4-200/A8 Symphony, 4" Mid/Bass also a good candidate
Eton 4-200/A8 Symphony, 4" Mid/Bass with Aluminum Former: Madisound Speaker Store
as the Audax HM130Z0
Haut parleur medium 130 cm Audax HM130Z0
A lot of members are not going to answer you because they don't know the context (use/SPL, freq. crossover/tweeter...), sorry fst.
Help me select a mid
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Old 22nd April 2012, 06:15 PM   #5
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Default VIFA D75MX 3" Fabic Dome

I think it's no longer in production. I'm crossing it at 700Hz to the 8" Usher and 4K to the Vifa XT25. Running it 3-way active.
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Old 22nd April 2012, 06:20 PM   #6
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by Michael Chua View Post
I think it's no longer in production.

Hi,

It refuses to die :

ScanSpeak Discovery D7608/9200-10 3" Dome Midrange (D75MX41): Madisound Speaker Store

Been made for donkies years.

http://www.parts-express.com/pdf/264-550.pdf

rgds, /sreten.

The off axis dip is a phase related issue, so off axis is fairly smooth.
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Last edited by sreten; 22nd April 2012 at 06:30 PM.
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Old 22nd April 2012, 10:09 PM   #7
Face is offline Face  United States
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I would not use that down to 500hz.
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Old 23rd April 2012, 12:14 AM   #8
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Quote:
Originally Posted by tvrgeek View Post
I have not really followed midrange advances as I too have been misguided by the 6"- 1" expected current trend. I have reason to believe there are serious issues here so am looking for a 500 to 5K midrange of very low distortion
The primary issue with the 6-inch 2-way is the polar response, although there are some that do well on a whole (IE many of Jeff Bagby's designs, or something with a waveguide on the tweeter).

Trying to avoid a crossover in that passband only opens you up to other issues. I don't consider it particularily good design to be trying to cross a tweeter over near 5khz... no midrange will realistically cover that bandwidth as well as you expect. If I had to make any suggestions though, it would be the EJ Jordan JX92S or the CSS VWR125 for less expensive drivers, and the Scanspeak 12MU and ATC 150 for pricy high end drivers......... But it would not be my suggested plan of action. It's essentially backwards design philosophy.


Quote:
My goal is to keep the really high energy 2K to 4K out of the tweeter.
Unless you need PA SPLs, the better domes IE CSS LD25X, SB29, Usher 9950, RAAL 70-20XR, CSS Planar 2, Beyma TPL, or Dayton RS28A, will play earbleedingly loud without meaningful audible distortion crossed in the 2khz range and some even lower than that. So your logic really fails me.

And then there's compression drivers, if you do want limitless dynamics. Also good 1" compression drivers in good waveguides covering 1khz on up will sound better than wide bandwidth mids with a crossover at 4khz to a tweeter.
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Old 23rd April 2012, 12:54 AM   #9
Einric is offline Einric  United States
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I would recommend the Alpair-6P w/ SEAS K2851 chamber behind it.
I have heard some very good things about Mark Audio drivers.
In the SEAS chamber it appears to be nice and flat to 250hz or so.
The Alpair 6 should be give all the upper midrange you need to safely cross to your chosen tweeter.
On the downside is the 86db sensitivity.
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Old 23rd April 2012, 01:24 AM   #10
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Originally Posted by Face View Post
I would not use that down to 500hz.
You're right. Eventhough Vifa recommends 500Hz, it didn't work for me. The D75MX sounded strained. And that is with 24dB/oct slope. Moved it up to 700Hz and it cleared up.
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