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Multi-Way Conventional loudspeakers with crossovers

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Old 29th January 2013, 08:15 AM   #1
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Default 2.1 design

updated_wmd.jpg

working on a design for a few months and posted some early renderings before, hopefully will start making the moulds soon. The material is carbon fibre/kevlar.

The sub will use a Seas L26ROY (not as in render), ported. The internal volume will be quite tight, around 1.3 cu.ft
The main speakers will use either Monacor sph-30x w/o dust caps or specially made Bandor 50s.
amplification is the Keiga 2.1 amp, possibly with some upgrade mods; I'll add a bluetooth module and a dac
A compromise in this design is the x/o which needs to be around 125hz or so to protect the FR drivers.
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Old 29th January 2013, 08:19 AM   #2
graaf is offline graaf  Poland
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very nice, my suggestion is to throw away those deflecting elements though
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Old 29th January 2013, 10:22 AM   #3
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really? I was going to soften the edge a little more
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Old 29th January 2013, 11:08 AM   #4
graaf is offline graaf  Poland
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really? I was going to soften the edge a little more
diffraction is inevitable anyway and it is nothing good

I am sure we can agree on that point

without those elements the idea resembles TimeDomain speakers:

Click the image to open in full size.

and being 2.1 even more it resembles Sharp Aquos TimeDomain licensed speaker system:

Click the image to open in full size.
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Last edited by graaf; 29th January 2013 at 11:13 AM.
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Old 29th January 2013, 11:41 AM   #5
Dissi is offline Dissi  Switzerland
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very nice, my suggestion is to throw away those deflecting elements though
I completely disagree. Without reflector you will definitely get no trebles. According to the german loudspeaker magazine HobbyHiFi a 45 degree cone-shaped reflector performs much better than a hyperbolic one.

Strassacker, Komponenten: Lautsprecher, Frequenzweichen, Bauelemente

Last edited by Dissi; 29th January 2013 at 11:53 AM.
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Old 29th January 2013, 12:02 PM   #6
graaf is offline graaf  Poland
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Without reflector you will definitely get no trebles.
not in my experience, one gets the HF energy via reflective ceiling
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Old 29th January 2013, 12:04 PM   #7
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I need those trebles!
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Old 29th January 2013, 12:05 PM   #8
graaf is offline graaf  Poland
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I need those trebles!
You will get them, no problem
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Old 29th January 2013, 12:08 PM   #9
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looking at the german link, that design uses the W4-1337 and still achieves 84db in omni mode.. how? or is it taking both drivers into account
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Old 29th January 2013, 01:14 PM   #10
Dissi is offline Dissi  Switzerland
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looking at the german link, that design uses the W4-1337 and still achieves 84db in omni mode.. how? or is it taking both drivers into account
The speaker actually has a falling frequency response, bass at 84 dB and treble at 74 dB (anechoic measurement). But they claim the sound is balanced in the listening room...
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