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Multi-Way Conventional loudspeakers with crossovers

Stephens Trusonic 120cx speakers - Best type of enclosure design?
Stephens Trusonic 120cx speakers - Best type of enclosure design?
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Old 13th August 2019, 11:18 AM   #31
vishalk is offline vishalk  United Kingdom
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All good points, ok back to the drawing board to add these little details in, you're right about the cone size and subtracting the size of the tweeter. I Will have another go, I think I'll start searching for some one or a company close by that can do this for me!
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Old 13th August 2019, 02:56 PM   #32
bentoronto is offline bentoronto  Canada
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Stephens Trusonic 120cx speakers - Best type of enclosure design?
Take a driver with known T/S values and see how well your tool works. Do it twice.

Part of sensitivity analysis is knowing what measurements have the big influence. It may be that a certain measurement that can only be done crudely is also a measurement that is quite definitive. Just saying'.

Or just mount it and see what you got. That's where I'd start.

B.
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Old 13th August 2019, 03:41 PM   #33
vishalk is offline vishalk  United Kingdom
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I have a few drivers with known TS parameters I will give them a test and see what the device comes up with.
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Old 13th August 2019, 03:44 PM   #34
vishalk is offline vishalk  United Kingdom
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Screenshot_20190813_164211_com.huawei.himovie.overseas.jpg

I've already begun, just installed one driver into this folded horn cabinet and will give it a whirl.
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Old 13th August 2019, 04:09 PM   #35
bentoronto is offline bentoronto  Canada
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Stephens Trusonic 120cx speakers - Best type of enclosure design?
Ah, my old heart goes pitta-patta just to see that beautiful driver.

Funny, that accordion surround is really great and has less drag than the "new-and-improved" stiff rubber ones. Hence, the parameter that matters the most to me is resonance because that constrains how low you go and your fine old driver will go pretty low.

(Yes, there are debates about surrounds. But stiffness is not debated and that's all I'm saying.)

B.
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Old 13th August 2019, 05:45 PM   #36
vishalk is offline vishalk  United Kingdom
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For sale Stephens Trusonic 120 CX speakers and cabinets

This seems to be an enclosure designed by trusonic for this speaker.
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Old 13th August 2019, 06:08 PM   #37
bentoronto is offline bentoronto  Canada
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Stephens Trusonic 120cx speakers - Best type of enclosure design?
Possibly a BR with classic Olson tuning. 1960's: I was there and the boxes were lousy, Bozak, Klipsch, and some few others* possibly excepted. Mostly guesswork and ten-cents of cotton damping (what was that stuff called?).

Look how low the tweeter would be. Not quite as flimsy as some boxes.

But the Stephens drivers were great and still are.

B.
* Karlson??????
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Last edited by bentoronto; 13th August 2019 at 06:11 PM.
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Old 14th August 2019, 12:09 AM   #38
johnsurnamerobinson is offline johnsurnamerobinson
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These boxes and drivers are really old school and likely to be high eff and restricted bass extention,A real retro sound. Is that what your aiming for?????
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Old 14th August 2019, 06:20 AM   #39
vishalk is offline vishalk  United Kingdom
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John I'm just playing around at the moment until I am certain of getting some good TS measurements or someone has a enclosure design that is recommended.
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Old 14th August 2019, 10:51 AM   #40
johnsurnamerobinson is offline johnsurnamerobinson
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Yup pre T/S it was largely done by ear I used to have a lot of info on 40s-60s enclosure design.Conclusion >>>trial and error largely.
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