Cloning Spatial Audio M4 OB

[Horizons]

I cloned the Emerald Physics speakers years ago and it looks like cloning the M4 might be even easier.

Clayton appears to be using 2 Eminence Beta-12CX 12-inch coax drivers. The top driver includes the P.AUDIO BM-D440S compression driver crossed at 800 Hz.

However, it is not clear what xover is used. From some pictures/videos, the passive xover is very simple with very few parts. No way he can be using first order so I suspect second order. But 800 Hz second order is pretty low even for a pro compression driver.

One could always just go 4th order active I suppose.

Has anyone tested this speaker or tried to clone it?

 

[Lojzek]

Hi, that's very good looking speakers and I don't blame you wanting it cloned. Still, the bass otput of a Qts =0,48 unit in an OB won't be spectacular and will roll off early without active EQ. If I were to do it, I'd consider building a vented box version with one beta 12cx driver and a solid compression driver, put in about 4 cuft and match the aesthetics to Spatial product. The crossover shuld not be a problem if you apply the usual design rules that have been discussed here thousand times. Without measurement there is no point to build anything, imo.

 

[DieterK]

I won´t do this with two of the Beta-12CX. If you want to go in 12" and Eminence choose 1 Beta12Cx on Top and the Alpha12A for Bass, crossed at 100Hz and 2500Hz. This might be a better solution.

 

[Meatmallet]

Hi, my name is Marco from Verona Italy.
I have bought the speakers for cloning M4:
1 Beta 12cx and 1 beta 12A2 at this point the problem is "crossover", any suggestion or help? Thanks