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Multi-Way Conventional loudspeakers with crossovers

Vintage speaker identification
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Old 13th September 2013, 08:54 AM   #21
aulday is offline aulday  United Kingdom
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absolute gold! Here's the spec!

http://www.audax.com/archives/HIF13H...gue%201986.pdf

man this is exciting sorry.
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Old 13th September 2013, 09:51 AM   #22
aulday is offline aulday  United Kingdom
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So the Qts is only .29. Quite low for a driver used in a BP sub cabinet no?

I was thinking hight Qts, low Fs and high Vas
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Old 13th September 2013, 10:02 AM   #23
aulday is offline aulday  United Kingdom
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Okay he didn't use glue, what did he coat them with?
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Old 13th September 2013, 10:19 AM   #24
aulday is offline aulday  United Kingdom
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It appears that this driver: SPH-135KEP has very close Fs and Qts. Can someone tell me what it's Vas will be in Litres?

Here's the Audax spec: http://img16.imageshack.us/img16/1739/hif13h.jpg
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Old 13th September 2013, 01:28 PM   #25
aulday is offline aulday  United Kingdom
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Just realised I have a pair of these drivers under my desk. Anyone know if they'd make a good match for the mid-bass section?

https://www.google.co.uk/search?q=mi...em%3B400%3B266

They're from a pair of mission 760s

Last edited by aulday; 13th September 2013 at 01:30 PM.
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Old 15th September 2013, 02:02 AM   #26
Inductor is offline Inductor  Portugal
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Quote:
Originally Posted by aulday View Post
It appears that this driver: SPH-135KEP has very close Fs and Qts. Can someone tell me what it's Vas will be in Litres?

Here's the Audax spec: http://img16.imageshack.us/img16/1739/hif13h.jpg
Nice project, I love it. Congratulations...
Audax HIF13H-2CA12
Vas = 14.10 (L)
Xmax = +/- 4 (mm)
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Old 15th September 2013, 02:16 AM   #27
GM is offline GM  United States
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Quote:
Originally Posted by aulday View Post
So the Qts is only .29. Quite low for a driver used in a BP sub cabinet no?

I was thinking hight Qts, low Fs and high Vas
The lower the Qts, the wider its available gain BW, ergo a high Qts will have a very narrow 'one note' gain BW. These define the limits where Fs is the mean:

Fl = Fs*Qts/2

Fh = Fs*2/Qts

GM
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Old 15th September 2013, 02:36 AM   #28
Inductor is offline Inductor  Portugal
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Quote:
Originally Posted by aulday View Post
Just realised I have a pair of these drivers under my desk. Anyone know if they'd make a good match for the mid-bass section?

https://www.google.co.uk/search?q=mi...em%3B400%3B266
They're from a pair of mission 760s
Was that a mid driver?! It's possible that would not go so low as the mission (guess). The Audax is working in conjunction with a low frequency bandpass, check the crossover. I would use it but measuring T/S parameters is a good procedure (and frequency/output/impedance).
I'm afraid to say this but the most similar driver (not the best probably, because it's a woofer) I found, here.
http://www.morelhifi.com/old/product...0ECW%20536.pdf
Interesting anyway, for a future prototype.
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Old 15th September 2013, 02:39 AM   #29
GM is offline GM  United States
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Quote:
Originally Posted by aulday View Post
Okay he didn't use glue, what did he coat them with?
??? Ask him........

GM
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Old 15th September 2013, 03:05 AM   #30
GM is offline GM  United States
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Quote:
Originally Posted by aulday View Post
It appears that this driver: SPH-135KEP has very close Fs and Qts. Can someone tell me what it's Vas will be in Litres?

Here's the Audax spec: http://img16.imageshack.us/img16/1739/hif13h.jpg
See the attached T/S specs calculated from the electro, mechanical ones for Monacor, Audax:

GM
Attached Images
File Type: gif SPH-135KEP WinISD Pro specs.gif (13.6 KB, 97 views)
File Type: gif HIF13H2CA12 WinISD Pro specs.gif (14.4 KB, 99 views)
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