Hello Evan and Kevin,
Open baffle speakers are very interesting, or at least to me they are.
If this is the absolute best speakers possible? Hard to say, probably depends.
I agree 100% on one thing though. If you take into consideration the amount of Work/Price
ratio compared to they're performance, it is the best speaker option possible PERIOD!!!
I've been listening to OB's for many months now, simply Love the sound. Just a statement here that doesn't have to be correct, but still a thought:""IF OB's where much better than Back loaded horns, it would be hard to understand why someone
with the capacity to Build, Design and Calculate Back-loaded horns properly still would bother doing
just that, if stuffing the same driver in a plank sounded better?""
Even so, many things are being done just because "someone" want to do it differently than the other
engineer did it.
SO it is very possible that someone actually could do this, even if they knew all along it was a stupid
approach compared to OB's.
This is the way of the world and we have to decide ourself what we think/hear/feel and want to spend
of efforts to get the ultimate sound performance into our homes.
I have a pair of Back-loaded horns, 1/4'th wave or something with some Coral Flat8II in there,
they sound FANTASTIC with this single driver in there.
A friend of mine are at the time borrowing them, he is almost in a coma because of they're performance.
He loves them so much is does not have words.
Since I too love the sound of Coral drivers so much, well there is also a pair of FLAT 10's laying around here, so my plan is to put these drivers into a OB JUST like you Evan did.
The "bracing" as yeo so lovely calls it, is an marvelous idea neat and smart.
The OB's playing in my system today have not less than FOUR (4) 18" Woofer drivers, two on each side.
Then Midrange 8" and a 4" Tweeter.
For a long time and liters of drool have been spilled on the Aurum Cantus tweeters G1.
What bothers me is the PRICE, ERR; it is OK if they are OK in my system, if not, HA HA HA!! NO FUN!"
Reason why not G2, well sadly the sensitivity is too low for my setup.
OR else it the pick would have been the same drivers as Kevin has in his setup.
You do mention Eminence, I was supposed to use Eminence Beta 18" in my system,
but due to impedance matching it fell on some other similar 18" drivers with even lower
FS = 23Hz.
These work fantastically good in OB's have a sensitivity of around 99dB/W/M, and so with two on
each side we add up to 101.5dB/W/M or so. (Think this is correct, like with antennas
I had no idea that the bass would behave like you mention here.
SO the bass will first increase in strength and depth the further from the wall, and then weaken again
when too far away.. Interesting, very interesting.
Oh one other thing here, yeo
I agree with you in many things, and it is beneficial to do so, because you are so often right.
Still I'm disagreeing with you when it comes to the use of HUGE BEAST Woofer drivers.
You I'm sure, think that these speakers of mine will blow my hair off, they certainly could even if my hair
still is hang'n in there pretty well.
The Woofers are rated 800Watt/RMS each, so a total of 3200Watt/RMS and a sensitivity of 99dB/W/M.
approximately 45KG of drivers...
Yes you are correct, or you might at least not be wrong, it may seem EXTREME!!!
Truth is, maximum power these drivers ever have seen is about peaking 4watt.
Now we can discuss if they're break-in time and so then can be achieved.
YES, Swipe and pink noise for day's with a 2x600WATT/RMS PA amp on low frequencies have done this.
Only maybe up to 7W/channel, or else the police would show up.
OK, what do they sound like? The sound, the low frequencies are wonderful.
It is so detailed it is hard to believe. IT is especially the imaging, holographic 3D in bass region that
is the most impressive part.
HOW deep frequencies can they deliver with a couple of watts, "simple" they do all instruments fine.
Cello, Contrabass, Timpani, they are all sounding like what they are.
I never get the feeling they play thundering bass, they just reproduce the instruments perfectly.
Even Thunder, like in Roger Waters Amused to Death (Thanks for the special one Jochen),
the thunder sounds and holographic positioning is breath taking.
The rolling of the thunder reproduction, like it is outside in mountain areas is wonderful.
It probably gets even more wonderful with some proper HUGE beast hard to build horns,
but compared to ALL other speakers, including the horns available to me, this is a very good solution.
Synthetic bass with long sinus wave 20Hz frequencies they cannot reproduce.
(Haven't tried it with the tone generator, but can hear it on horrid music.)
Other simple Bass reflex speakers makes this Rumbling distorted sounds when fed with this music.
IT is also possible this may be differently when the distance to wall experiment will be carried out.
Then maybe they will do 23Hz or so?
OH this was a lot..
Please comment, there should be enough to comment here.. .HA HA!!!