V4 - 4xDC130B + PT6816
Another kick at the can.
This uses quad woofers (sealed seperate chambers) and a planar. The outer 2 woofers X0=BW2@500, the inner 2 woofers XO=BW2@800 and planar XO=BW3@800 (needed some extra phase shift). Sim in 4pi space.
pics 1 : AKABAK3 BEM model
pics 2,3 : Hpolar, Vpolar with planar XO=800HZ
pics 3,4 : Hpolar, Vpolar with planar XO=1000Hz
Another kick at the can.
This uses quad woofers (sealed seperate chambers) and a planar. The outer 2 woofers X0=BW2@500, the inner 2 woofers XO=BW2@800 and planar XO=BW3@800 (needed some extra phase shift). Sim in 4pi space.
pics 1 : AKABAK3 BEM model
pics 2,3 : Hpolar, Vpolar with planar XO=800HZ
pics 3,4 : Hpolar, Vpolar with planar XO=1000Hz
Attachments
V5 - 2xDC130B-4 + 3FE25-8 + TD20F
This is more typical of current 3way center channel designs. The midrange (3FE25-8) is pushed down to allow the woofers to come closer together and make room for a small tweeter.
It looks like it works very well. There is a small LF bump and dip because the BR tuning is off after I moved the internal walls and changed the volume. The LF woofer XO=BW2@500Hz and midrange XO=BW3@500Hz (extra phase required). I would need to create a finer mesh to check the MF-HF XO=BW3@5Khz or so.
pics 1 : BEM model
pics 2,3 : polars XO=500Hz
pics 4,5 : polars XO=800HZ
.
This is more typical of current 3way center channel designs. The midrange (3FE25-8) is pushed down to allow the woofers to come closer together and make room for a small tweeter.
It looks like it works very well. There is a small LF bump and dip because the BR tuning is off after I moved the internal walls and changed the volume. The LF woofer XO=BW2@500Hz and midrange XO=BW3@500Hz (extra phase required). I would need to create a finer mesh to check the MF-HF XO=BW3@5Khz or so.
pics 1 : BEM model
pics 2,3 : polars XO=500Hz
pics 4,5 : polars XO=800HZ
.
Attachments
Last edited: