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Multi-Way Conventional loudspeakers with crossovers

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Old 15th February 2013, 01:24 AM   #11
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I will need a fairly significant amount of BSC. Where it's going, it will almost be like a L-R main.

Pic attached. I will mount it right underneath the PS3, above the receiver.
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File Type: jpg IMG00422-20130214-2133.jpg (172.2 KB, 250 views)

Last edited by 454Casull; 15th February 2013 at 01:39 AM.
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Old 15th February 2013, 01:30 AM   #12
Jay1111 is offline Jay1111  United States
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It is getting full bsc, the bass roll off will work for an 80hz sub xover.
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Old 15th February 2013, 01:37 AM   #13
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Also, I hope it's not too late to say this now, but the ears will be about 18" above the tweeter. The required spread is +/- 22 degrees.
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Old 15th February 2013, 01:44 AM   #14
Jay1111 is offline Jay1111  United States
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Vertical will be fine still, but you could always tilt the speaker a few degrees up if needed. Horizontal is extremely good out to 30 degrees, and still very good past that.
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Old 15th February 2013, 03:07 AM   #15
Jay1111 is offline Jay1111  United States
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I didn't see your image before, but yes you should tilt the speaker up at least 5 degrees. The mid needs 4 liters sealed, the woofers each need 10 liters with a 2" x 6.5" port for each woofer.

I like how this thread has a 1 star rating. Sorry for simulating a design for this guy

(I didnt see any iron core inductors on Solen, but you if you find an 18ga iron core I would use that on the woofer for a much cheaper solution)
Attached Images
File Type: png center parts.png (26.5 KB, 247 views)
File Type: png fountek vifa SF tweeter.png (23.8 KB, 238 views)
File Type: png fountek vifa SF mid.png (20.4 KB, 176 views)
File Type: png fountek vifa SF woofer.png (19.8 KB, 172 views)

Last edited by Jay1111; 15th February 2013 at 03:09 AM.
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Old 15th February 2013, 03:09 AM   #16
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Quote:
Originally Posted by Jay1111 View Post
I like how this thread has a 1 star rating. Sorry for simulating a design for this guy
As the only other person that posted anything in it, I feel compelled to let you know it wasn't me . I never even remember ratings exist.
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Old 15th February 2013, 01:52 PM   #17
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Wasn't me that posted the rating either... Thank you very much for your assistance.

What happens if I leave the box sealed instead of porting it?

Can you describe the slopes or any details you feel are particularly important?

Last edited by 454Casull; 15th February 2013 at 01:57 PM.
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Old 15th February 2013, 02:21 PM   #18
Jay1111 is offline Jay1111  United States
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Acoustic slopes are: Woofer 2nd order LR, The mid HP is also 2nd order LR. The mid LP is 4th order LR, and the tweeter's also 4th order LR. Crossover points are 470 hz and 3700 hz. The Fountek is going to be the shining star, covering everything important.

You can try sealed, but I wouldnt advise it. There will be an impedance peak from the woofers right where the inductor is also causing a peak, which might lead to a boomy sound. You would only need 2" clearance behind the speaker for the 2" port to function properly. You could also drop down to four 1" x 7" ports for each woofer, then you would only need 1" clearance behind the speaker.
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Old 15th February 2013, 02:54 PM   #19
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How did you get the frequency and impedance plots for these drivers? From Zaph or the manufacturer? Or does PCD have a database of such things already?
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Old 15th February 2013, 04:16 PM   #20
Jay1111 is offline Jay1111  United States
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Mid and tweet are from zaph, woofer from manufacturer.
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