am i missing something or is that poor midrange. kind of ****** by the 2 x 15 inch in the same space ???
you can see the shell, and aparantly there is no seperate room for the 2 x 15 inch and the mid. 2 opposite woofers work.. but only when closed not when you got a poor midrange that will be sucked inwards by 2x 15 inches >? i wonder when it runs out of xmax or be outside its linear range to perform mids ? am i missing something ????
you can see the shell, and aparantly there is no seperate room for the 2 x 15 inch and the mid. 2 opposite woofers work.. but only when closed not when you got a poor midrange that will be sucked inwards by 2x 15 inches >? i wonder when it runs out of xmax or be outside its linear range to perform mids ? am i missing something ????
well i was wondering about the lows, lets say the 15 inches see 50 Hz.. it will pull the mid range inwards. ? does it not ? you create a vacuum sort of. and the midrange can move inwards compared to the wood, ( same goes for outwards of course)
Yes, an acoustic XO is a wide range blending of drivers, i.e. an acoustic 1st order XO, so spans at least four octaves.
In the woodworking that's creating the presumed acoustic XO's chambers. Well, you should as it's apparently what's blending the mid's, woofer's output together over a presumed very wide BW.
are you quoting there page ? these openings will nog make a high pass.....maybe a low pass but that does not help the mid range, they sem to be there to make the whole sitiffer.
I found nothing except the picture you posted and made a somewhat educated guess of what the two visible chambers are for, so for now I'm done and assume we'll have to 'agree to disagree'. 😉
Does that thing have the midrange and bass driver in the same enclosure?
Eo you have a full picture of the inside.
dave
Eo you have a full picture of the inside.
dave
well it looks like it the enlcosure is on the right, one halve of it i think 🙂 but you can see the cavities though
The midrange may have a much higher BL and lower compliance, which together resist the back pressure created by the longer throw woofers being in the same air volume.
I've built setups with low compliance mids and acoustic suspension woofers in the same air space before. It actually works and you avoid the typical resonances with a mid playing in a smaller sealed chamber by itself.
If you choose your drivers and xover points carefully, it can work very well. It requires a very delicate balance of parameters to get it right.
I've built setups with low compliance mids and acoustic suspension woofers in the same air space before. It actually works and you avoid the typical resonances with a mid playing in a smaller sealed chamber by itself.
If you choose your drivers and xover points carefully, it can work very well. It requires a very delicate balance of parameters to get it right.
No hole. The cavity at the top could have a small enuff entrance to be a hellhole absorber.
Milled out of solid wood… what a waste. Solid wood is a scarce resoiurse and they are turning mot of what they start with into sawdust. At least when you do this with aluminum it can b e recycled and make new aluminum sheets/blocks.
And the bit about the mid being isolated is something i have not seen work (sure they measure better, KEF showed thatm but they don’t sound better). All of the midrange reactive force is only minimized by the mass of the woodfer and not the entire box.
Be better to have se[parate subs.
And i know aesthetics is. personal thing, but Boenicke is known for the pretty boxes but this one is pretty ugly.
dave
Milled out of solid wood… what a waste. Solid wood is a scarce resoiurse and they are turning mot of what they start with into sawdust. At least when you do this with aluminum it can b e recycled and make new aluminum sheets/blocks.
And the bit about the mid being isolated is something i have not seen work (sure they measure better, KEF showed thatm but they don’t sound better). All of the midrange reactive force is only minimized by the mass of the woodfer and not the entire box.
Be better to have se[parate subs.
And i know aesthetics is. personal thing, but Boenicke is known for the pretty boxes but this one is pretty ugly.
dave
Sure looks like resonance chambers but with only a cut-away to look at it's hard to know what's going on. Even so, it appears the woofer and mid-woofer are acoustically coupled and with a lot of impedance in the way. Interesting, for sure.
hmm well there are 3 places where the woofers are connected with mid., quite some big surface area
Not surprised, I've run 8" 'FR' drivers open back in 15" wide range woofer cabs, so just a matter of getting the right driver specs, box net Vb, damping to make it work while theirs looks like a proper acoustic XO attempt to me.