The road with SLS8″ has been gone through.
Those cannot give me any more.
Also middles and tweeter needed something new.
Woofer section
I have long time had idea to update my woofers to something new, with much improved low end. When I had possibility to obtain Dayton Audio RSS390HO-4, I knew that i have to try those.
![](http://jasun.hifisivut.dy.fi/sivut/wordpress/wp-content/uploads/2021/02/image.png)
First simulations with 65 liters closed box seems to be promising.
End result, MDF enclosures.
Upper section
But then, what to have as middles and high frequencies?
I have heard some nice demos of PA coaxial elements.
Then I decided to byu audiovideo Piste15″ kit
Kit has B&C15CNX76 element and passive crossover.
But ofcouse i could not follow kit.
Kit is for full frequency range with reflex enclosure.
I decided to do Dipole and only from 200 and up (daytons should do below 200).
Once again with MDF.
End result
Current speakers are more or less proof-of consept, not final versions, so therefore finish of enclosures is a bit quick and dirty. I used dc-fix membrane (self-adhesive thin coloured). Not looking nice, but speakers are still one colour.
![](http://jasun.hifisivut.dy.fi/sivut/wordpress/wp-content/uploads/2021/12/left-speaker-RSS390HO-4-and-15CXN76-and-apollon-1-1024x531.png)
Frequency responce of left speaker from listening position.I am pretty happy with it. Response is ok and low freqyency is extended to 15Hz (no eq on woofer, just room boost).