SS D2905:970000 + TB W4-2142 + JBL 123A

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A

alujoe2

Member
Joined 2009
#1
Hello,

please help me to find some good compromises.

The driver data:

T: http://www.scan-speak.dk/product/d2905-970000/

M (FR): http://www.tb-speaker.com/products/w4-2142

W: http://www.troelsgravesen.dk/JBL_L100.htm



Question #1:

I would like to know if you prefer traditional cabinet similar to this from Troels Gravesen: http://www.troelsgravesen.dk/JBL_L100_08.htm or this Modular.1 from Bentezh : https://www.bentezh.com/



Question #2:

The W4-2142 is a full range, the 123A plays much higher than usual 12” and the D2905/970000 can be crossed < 2k therefore the big question is where to put the crossover points and how steep ? Is the W4-2142 too small for the 123A ?



Question #3:

If I cross the tweeter low, I would add a waveguide WG-148R from Visaton and mount it close to the W4-2142, but what if I cross the tweeter high ? Should I mount the tweeter firing to the top, creating ambience with ceiling reflections or should I mount it the traditional way ?

Thanks for helping me.
 
#2
The JBL 123a is fun to play with... Looking at the Lansing Forum I have often wondered what a S70 Alpha III crossover would do for the sound of the basic L100 speaker. If I had the skills I would punt the Le5 and replace it with the 104h-2 and use a GRS ribbon as the tweeter. Sealing the standard cabinet really helps with the one note bass.
 
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