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best PURE midrange (400hz-->)
best PURE midrange (400hz-->)
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Old 21st April 2007, 02:18 AM   #21
Salas is offline Salas  Greece
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best PURE midrange (400hz-->)
See for a 10'' from 18 sound.
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Old 21st April 2007, 02:53 AM   #22
herm is offline herm  United States
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Thadman,

This is all I could dig up on the 18sound 15ND930.
This is coupled with a tweeter crossed pretty low, but
it's better than no curves at all...

Good thing you speak German fluently.

Linky

Well, since I speak just a little german, here's the frequency response
Combined Freq

here is the waterfall
Waterfall

And here is the woofer all by itself:
Woofer only

Not much help answering your question of it's use as a midrange, but
at least you can see it's fairly free of nasties up to 1100hz.

herm

P.S. Anyone who speaks german better than I, please feel free
to translate any pertinant points of that design...
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Old 21st April 2007, 03:40 AM   #23
Magnetar is offline Magnetar  United States
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I have four spare JBL 2123J (16 ohm, used) mids if you're interested. They are real good in that range and are very efficient when used as a parallel pairs - They sound fantastic

Email me if if you are interested -

http://www.jblpro.com/pub/obsolete/2123.pdf
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Old 21st April 2007, 07:34 PM   #24
tinitus is offline tinitus  Europe
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A pair of these 15" Selenium pr side

http://www.partsexpress.com/pe/showd...number=264-375

And maybe this new BMS coax midtweeter

http://www.bmspro.info/index.php?sho...280&id=5063649

It will rock your metal music loud and hard and take a lot of power on overdrive, as I guess you like it
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Old 22nd April 2007, 03:04 AM   #25
CONVERGENCE is offline CONVERGENCE  Canada
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Quote:
Originally posted by tinitus
I understood i should be used from 400hz-2000hz

It says here the 16" 416 altec is low frequency, band limited to 1600hz ????

http://www.lansingheritage.org/image...6-8b/page2.jpg

If you go back to original post.

Quote

(I am looking for the best pure midrange (~400hz to 1500~2000hz,)

If I read correctly it says 400 to 1500 upto 2000 if possible.

Therefore the 416 by ALTEC LANSING and produced and manufactured by Great Plains Audio meats the criteria.

Plus for mid range you can't beat ALTEC.



..............................................
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Old 22nd April 2007, 03:49 AM   #26
tinitus is offline tinitus  Europe
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You should read the whole thread, its not that long and not just a matter of a good midrange

Well, I believe Altec/Iconic/GPA are great drivers, but also very expencive, I guess

but a 16" as a "pure" midrange ?? even 800hz would normally be a compromise with a 15"

But its Thadman you will have to convince, not me
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Old 22nd April 2007, 07:00 AM   #27
Baseballbat is offline Baseballbat  Germany
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Here's the scan of the Ciare 10.64NdMR:

An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


I'm sorry, I have to spend some more time on the scan of the Celestion, as the parts of interest are really unreadable.

Baseballbatboy
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Old 21st May 2007, 10:53 PM   #28
rick57 is offline rick57
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Default A very similar issue

I have some got recently old ESLs that need repair, for listening to well recorded material.

Im planning a separate dedicated rock system.

The foundation will be midbass - Altec 15 inchers, which should get me to 400 600 Hz. (Under that Ill likely go a tapped horn). The Altec will start off bass reflex, but if I ever get time, will become horn loaded.
On the top end Aurum Cantus 1s, which should come down to 1500 2000 Hz.

So I need to bridge the gap, which I will likely do open baffle, to cover only about 2 2.5 octaves. Though its for rock, 105 dB max will do me, though 110 dB would give more headroom.

Ive accumulated a few drivers some will be used elsewhere or be sold.

PHL 10 3451
JBL 10 2123J
B&C 6.5 6MD44
PHL 6.5 1040
Seas 6 Excel mag cone - much lower sensitivity and max dB, but going active, at least the levels can be balanced.

Might a metal cone driver between a paper cone (Altec) and a ribbon give a better transition of materials better integration?

No 1 priority is transient response.

Anyone comment on these drivers for this purpose?

How hard is it learn to measure & plot decay ?

Thanks
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Old 21st May 2007, 11:26 PM   #29
CONVERGENCE is offline CONVERGENCE  Canada
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Is this for rock concerts or disco?

What size venue will it be used in?

If you'r going for Altec . The 817 cabinet for mid bass.
The M94 Mantaray Horn with GPA 399 Driver.

That covers 200 to 15K perfectly.

You'l need a sub.
You might need a Bullet tweeter.
Attached Images
File Type: jpg 817a.jpg (21.9 KB, 876 views)
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Old 22nd May 2007, 02:47 AM   #30
rick57 is offline rick57
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Hi Convergence,

Whoa, for rock music yes, but just in my rumpus room, c. 22 * 17 * 12. (Yes I'll need a sub).

I was asking about mids, but wouldnt most or all pro cabinets be designed for rather than minimum coloration etc; for maximum loading ie gain, and bass cabs for portability?

If Im wrong a pro midbass cabinet would be great for simplifying things!

Thanks
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