I agree IB is worthy of serious consideration for those who could do it. I can't believe it took so long for the light bulb to go off in my head, i think i have Simon Hickie's OB adventures to thank for that (thanks Simon )Lindsayt wrote: ↑Sun Oct 20, 2019 12:29 pmMy Bozak Symphony speakers are not true infinite baffle speakers, but the spring effect of the air in the box is small enough for the drivers to act very similarly to an infinite baffle.
That still leaves the box though. Which is coupled to the floor through the 70kg mass of the speakers via castors. Which would be a different kettle of fish to a thick board screwed to a wall, or a smaller enclosure screwed to the floor with a whopping big hole in the floor.
Nevertheless, I am convinced that infinite baffles are well worth trying for anyone with the means to do so.
Home cinema optimum bass does seem to be about the extension and max power levels. Due to the amount of gimmicky low frequency bumps and thumps in modern Hollywood action films.
Whereas for music listening some of the extension and max power levels can be sacrificed for texture, definition, dynamics, the ability to start and stop quickly.
I got a reply on the cult forum from Thomas saying the drivers probably don't have a high enough xmax. And that having the bass drivers a distance from the other drivers would smear the stereo image.
I respect his opinion but then i am not one to be put off trying something. So the plan would be to dispense with isobaric and use two 12 inchers per channel in parallel. I would like to get rid of all speaker boxes in the room so that would mean mounting the 5 inch mid bass in the floor too . All the drivers firing upwards and all clustered together for each channel. If i can get them as near the back wall as poosible then i could mount the tweeters on the wall just behind the other drivers and angle them up so they are on axis at the listening position.
There may be flaws in this plan that i have not considerd yet
+ if the drivers are at floor level then i will get more directly radiated sound from the 12" & 5" drivers than i am getting now.
+ the floor might vibrate too much - i can probably do something about that
+ the 5" mid will be 8 ft from the ceiling rather than 5 ft. Doc said semi omni does not work with high ceilings. Not sure if 8 ft above the driver is too much
+ using two 12 " per channel will boost their output by 6dB. I may need two 5" per channel to balance the spl's
+ my wife may laugh at me. But no speaker boxes in the room may swing it ?
Anyway i can try it at the family farm and see if it works. I have a room available that is similar to my living room at home and a room below for the back wave. I am very excited about giving this a go.