Midrange - cones vs Compression drivers? - Page 2 - diyAudio
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Old 23rd June 2010, 07:53 PM   #11
Hrmmf is offline Hrmmf  Denmark
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Quote:
Originally Posted by freddi View Post
20+ years ago I ran Edgar's 100Hz horn/2220Hz with a 250Hz tractrix/LE5 - 2220H was good for around 500Hz - the harmonic plot was for the K43 clone - 2220 was about 10dB worse in distortion
Click the image to open in full size.
Hmm, does this mean that I'm doomed when it comes to using the 2220...?
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Old 23rd June 2010, 08:00 PM   #12
Hrmmf is offline Hrmmf  Denmark
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Originally Posted by voltcontrol View Post
Just a suggestion..
Great looking system:-)
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Old 23rd June 2010, 08:52 PM   #13
pk is offline pk  Denmark
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Originally Posted by Robh3606 View Post
In the system I use them in they are direct radiators. I have never horn loaded them

Rob
Hi robh3606,

Thanks for your reply!

Best regards
Peter
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Old 24th June 2010, 07:53 AM   #14
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Ps. don't know if you're looking for a particular size midrange if the choice is going to be cone, in the 6.5" category, the 18sound 6ND430 is a VERY nice option. You can buy one from +-85 Euro onward.

It features in this Zaph grouptest. (Including some measurements )
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Old 24th June 2010, 10:57 AM   #15
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Instead of hard to find 10" JBL's take a look at this chart for 10" B&C10SP26:

Click the image to open in full size.

Fairly flat From 100hz to 1800hz, easy to drive. $140
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Old 24th June 2010, 12:10 PM   #16
Loren42 is offline Loren42  United States
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All of the suggested cone drivers so far (except maybe the JBL 2123H) can't keep up with the JBL's 101 dB SPL, so if you are not bi-amping this arrangement, you pretty much need to consider a horn and a compression driver.

You could horn load a midrange cone driver as an alternative. I'll let others chime in on the logistics of that.

Last edited by Loren42; 24th June 2010 at 12:17 PM.
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Old 24th June 2010, 03:42 PM   #17
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My 2 cents worth says that all depends on what you are trying to acheive, at what level of "perfection" and in what budget, and what your abilities in terms of construction and design are already??

Fwiw the older Edgar horns were somewhat flawed... if you want better horns there are some right here on Diy...

My personal philosophy on this is that it is a very positive design goal to avoid any xovers between <~250 and >~3kHz. (a greater spread being better) if possible.

In my own system now I am able to go from 250Hz up past 10kHz with a single compression driver + horn combination - it is very neutral and of course has 109dB/1w sensitivity... so that is one way to skin this cat...

Line sources, ESLs, wide/full range drivers are others...

And of course one can find "midrange" drivers that may pretty much fill the basic range requirement.

Although there are other design methods that do have xovers in this range that yield acceptable or better results as well...

So, imo, there is no "answer" just various solutions.
You first have to define the limits and goals before a viable set of alternatives can emerge that make sense.

_-_-bear
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Old 24th June 2010, 04:10 PM   #18
pk is offline pk  Denmark
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Quote:
Originally Posted by bear View Post
My 2 cents worth says that all depends on what you are trying to acheive, at what level of "perfection" and in what budget, and what your abilities in terms of construction and design are already??

Fwiw the older Edgar horns were somewhat flawed... if you want better horns there are some right here on Diy...

My personal philosophy on this is that it is a very positive design goal to avoid any xovers between <~250 and >~3kHz. (a greater spread being better) if possible.

In my own system now I am able to go from 250Hz up past 10kHz with a single compression driver + horn combination - it is very neutral and of course has 109dB/1w sensitivity... so that is one way to skin this cat...

Line sources, ESLs, wide/full range drivers are others...

And of course one can find "midrange" drivers that may pretty much fill the basic range requirement.

Although there are other design methods that do have xovers in this range that yield acceptable or better results as well...

So, imo, there is no "answer" just various solutions.
You first have to define the limits and goals before a viable set of alternatives can emerge that make sense.

_-_-bear
Hi Bear,

May I ask what compression driver / horn combo you are using in the 250-10,000 Hz range?

Thanks!

Best regards
Peter
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Old 25th June 2010, 09:22 PM   #19
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hi Peter

i have replaced the Fane Studio 8M in the midbass horn today with the Radian 950pb, which was laying around. I made a adapter from 2" to 4" with a left over tractrix horn, which i cut in two. Crossover of the basshorn 250hz / 24db.
Sound is terrific...., and improvement is evident. More transparent, better transient response and coherency. No wonder, Goto et al use a compression driver in the 200hz - 1khz range.
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Old 25th June 2010, 11:41 PM   #20
pk is offline pk  Denmark
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Originally Posted by angeloitacare View Post
hi Peter

i have replaced the Fane Studio 8M in the midbass horn today with the Radian 950pb, which was laying around. I made a adapter from 2" to 4" with a left over tractrix horn, which i cut in two. Crossover of the basshorn 250hz / 24db.
Sound is terrific...., and improvement is evident. More transparent, better transient response and coherency. No wonder, Goto et al use a compression driver in the 200hz - 1khz range.
Hi Angelo,

That sounds interresting. How long is your horn, and how far up in frequency do you run the Radian?

Thanks!

Best regards
Peter
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