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Multi-Way Conventional loudspeakers with crossovers

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Old 22nd June 2012, 10:27 PM   #21
ScottG is offline ScottG  United States
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Quote:
Originally Posted by Starre View Post
And for tweeter: Seas 27TFF
For a "2-way" I'd use the Scan Speak Discovery 10F/4424G00 (or its 8 ohm version) for a "tweeter"..

http://www.zaphaudio.com/temp/Scan-S...4424G00-FR.gif
http://www.zaphaudio.com/temp/Scan-S...5-30-45-60.gif
http://www.zaphaudio.com/temp/Scan-S...424G00-CSD.gif
http://www.zaphaudio.com/temp/Scan-S...4424G00-HD.gif

..and then design around that.
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Last edited by ScottG; 22nd June 2012 at 10:33 PM.
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Old 22nd June 2012, 10:45 PM   #22
Starre is offline Starre  Sweden
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Too expensive! Thanks for the suggestion.
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Old 22nd June 2012, 11:03 PM   #23
Starre is offline Starre  Sweden
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Well, it costs approx. 80 Euro.
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Old 22nd June 2012, 11:06 PM   #24
ScottG is offline ScottG  United States
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Originally Posted by Starre View Post
Well, it costs approx. 80 Euro.
Yes.. but it can save you more in crossover parts cost (..a LOT more).

(..and make for an easier design as well as the option for a MUCH lower freq. response - depending on the woofer.)
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Old 22nd June 2012, 11:07 PM   #25
Starre is offline Starre  Sweden
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Yes I see your point ScottG. I will consider your suggestion.
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Old 22nd June 2012, 11:53 PM   #26
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Good point to considerer. Better to spend 40.00+ of driver parts than of better caps or extra components. Valid consideration, Starre if you think it will sound better.
Working with a 4" Midrange as a tweeter certainly will not be the standard. But who knows what can be done.
Is your listening room narrow or large?

Last edited by Inductor; 23rd June 2012 at 12:15 AM.
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Old 23rd June 2012, 12:28 AM   #27
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Quote:
Originally Posted by Starre View Post
Interesting PeteMcK, I think the same, good value and easy to work with. Not decided if using sealed or BR box though...
To use sealed enclosure make sure to use an adequate driver... (who knows?).
Sealed or Ported Enclosure Calculator
Driver good for BR (SEAS CA18RLY nice in 32 L to 42 L) and quarter wave.

Last edited by Inductor; 23rd June 2012 at 12:47 AM. Reason: BR
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Old 23rd June 2012, 06:36 AM   #28
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re: 'sealed or BR box' - BR, ~ 40L tuned to the low 40s....

(probably good in TL or MLTL too...)
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Old 23rd June 2012, 10:06 AM   #29
Starre is offline Starre  Sweden
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Inductor: I used that calculator for CA18RLY and it said it was fine either way. Do you think the crossover for CA18RLY and 27TFF need to be complicated/expensive?

Last edited by Starre; 23rd June 2012 at 10:14 AM.
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Old 23rd June 2012, 11:07 AM   #30
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Going by an online calculator, the CA18RLY will work well in a 25ltr box (QTC = 0.7) with an f3 of 63Hz.

Someone over a the PE forum said that their old AR18 has an f3 of 62Hz but because of the high'ish Q design (QTC = 1 IIRC), they had a steep roll-off. I owned some AR18s a while back and thought the bass was really good, so the CA18RLY in a 25ltr box should be better (more accurate and go a bit deeper) but have less authority being a smaller driver.

IIRC the Seas 27TFF (or was it the 25TFF?) was used in the Proac Studio 100. I used to own those speakers and I thought they had a nice, crisp and clean treble.

With the crossover done right, I think that could make a nice combination.
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