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Bill poster 29th January 2013 09:15 AM

2.1 design
 
1 Attachment(s)
Attachment 326979

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.

graaf 29th January 2013 09:19 AM

Quote:

Originally Posted by Bill poster (Post 3346923)

very nice, my suggestion is to throw away those deflecting elements though

Bill poster 29th January 2013 11:22 AM

really? I was going to soften the edge a little more

graaf 29th January 2013 12:08 PM

Quote:

Originally Posted by Bill poster (Post 3347012)
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:

http://www.rakuten.co.jp/tno/cabinet/img55695961.jpg

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

http://www.cinenow.co.uk/e/y-l-000/0...jpg?1240104022

Dissi 29th January 2013 12:41 PM

Quote:

Originally Posted by graaf (Post 3346927)
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

graaf 29th January 2013 01:02 PM

Quote:

Originally Posted by Dissi (Post 3347083)
Without reflector you will definitely get no trebles.

not in my experience, one gets the HF energy via reflective ceiling

Bill poster 29th January 2013 01:04 PM

I need those trebles! :)

graaf 29th January 2013 01:05 PM

Quote:

Originally Posted by Bill poster (Post 3347099)
I need those trebles! :)

You will get them, no problem

Bill poster 29th January 2013 01:08 PM

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

Dissi 29th January 2013 02:14 PM

Quote:

Originally Posted by Bill poster (Post 3347106)
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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