I have a system in my kitchen comprised of 4 down firing 2x2 foot DML panels hung from the ceiling, a powered subwoofer, a DSP and the associated source/amp components
The DML panels start rolling off on the low end at about 300 Hz. Surprisingly with the sub's HPF maxxed out I get OK coverage from 300Hz down. However sometime when bass instruments (guitars, toms etc) are offset to one channel it can sound strange. So it would be good to have panels that could go lower.
The DML panels also need some extreme EQing to have decent frequency response.
What I'm thinking of doing is making 4 2x2 MDF panels with 1 GRS PT-2522 per panel to cover everything from 1K up, and some kind of high QTS big woofer to cover everything below that. Here is the problem though... I can't hang them very low. The baffle probably won't be more than 1 foot from the ceiling. What do you think? Could it work, possibly well enough to get rid of the sub? I know it's not ideal, but given the constraints of the room (there is literally nowhere else to put speakers) I don't have much room to work with.
The DML panels start rolling off on the low end at about 300 Hz. Surprisingly with the sub's HPF maxxed out I get OK coverage from 300Hz down. However sometime when bass instruments (guitars, toms etc) are offset to one channel it can sound strange. So it would be good to have panels that could go lower.
The DML panels also need some extreme EQing to have decent frequency response.
What I'm thinking of doing is making 4 2x2 MDF panels with 1 GRS PT-2522 per panel to cover everything from 1K up, and some kind of high QTS big woofer to cover everything below that. Here is the problem though... I can't hang them very low. The baffle probably won't be more than 1 foot from the ceiling. What do you think? Could it work, possibly well enough to get rid of the sub? I know it's not ideal, but given the constraints of the room (there is literally nowhere else to put speakers) I don't have much room to work with.
I don't think that the tweeter will be able to handle 1k and up, even 2k is pushing it. I think you either need your midwoofer to cross higher or add another driver.
How about this one? I initially looked at this, but I preferred the better high end response of the 2522 as I don't want to lean too much on DSP correction. I really want to keep things simple and stick with a 2 way setup, even if it means going a little smaller on the bass driver.
I'm also open to suggestions on regular drivers for the high frequency but I need something with even & wide dispersion.
I'm also open to suggestions on regular drivers for the high frequency but I need something with even & wide dispersion.
A single such driver will handle down to 1k. It does have more narrow vertical dispersion so is better for a line array. I believe you will have trouble matching the dispersion of the planar to your DMLs. You'll also have problems even with the smaller tweeter even if it did go down to 1k.
Have you measured how the dispersion for the DMLs? Any tweeter will have to match will have to match the dispersion. Depending on how loud you want to listen an option is to go in the other direction: lower the crossover of the DMLs to 500-1000 hz depending on the slope and use a small 2.5-3" full range driver instead of a conventional tweeter. Another option is to go with a waveguide + a large dome or a compression tweeter. They do get pretty large though when you want to cross down at 1000 hz.
In my research I found a quote from someone about OB that just stuck with me. I can't remember the exact quote, but it was something to the effect of, "get the woofer you want and see if you like the bass without any baffle. If it sounds good go from there"
So I just ordered 1 of GRS' cheapo rubber surround woofers in the 10" and 12" sizes. I'm hoping the 10" will be enough but I have room for 12" in my setup. We'll see what happens
So I just ordered 1 of GRS' cheapo rubber surround woofers in the 10" and 12" sizes. I'm hoping the 10" will be enough but I have room for 12" in my setup. We'll see what happens