Yes, my initial suggestion.I don't know many speakers that will do 20-20k within 3dB in one box, do you? It's a tall order.
Enter your room’s dimensions here,Perhaps, but not all large speakers will work well in a room 13 1/2ft x 16 1/2ft, of course they will 'work' but a lot of large speakers require large rooms
Amplification would help.
I'd recommend Shahinian Obelisks or Arcs but if you are using valves or low powered amps that's a complete non starter.
I’d suggest ATC 50s - but spec only 25Hz at -6db
100s do 22Hz (again -6db), but they’re probably too big for the room.
@Darren L, you really need to tell us more; amps, musical tastes, preferred listening volume and speaker siting restrictions as a minimum.
D&D8C.
Keith
IME a conventional box speaker that extends to the room's modal frequencies WILL excite these frequencies.There are many full range speakers that will go down to 20HZ, but the quality in the lower registers can be pants. I’ve always found a really good speaker that goes only to c.30hz sounds better (doesn’t excite room/boom etc), if you really want bass below this a high quality and well integrated sub/s is by far the better option. IME speakers that do 20HZ bass REALLY well you’re looking at £50k plus...
Just IME of course...
Thanks for the replies, I did try Shahinian Compass speakers and though they did some things very well they weren't for me, current amps are Michell Alecto MK2 monos recently serviced and upgraded to 250w by Graham Fowler of Trichord research, so no problem driving speakers, pre amp is a Copland CTA 301 valve pre (on board valve MM stage) preferred listening volume moderate to loud, no real restrictions on speaking siting.
Are you going to use the two subs destructively?
Keith
Thanks for the replies, I did try Shahinian Compass speakers and though they did some things very well they weren't for me, current amps are Michell Alecto MK2 monos recently serviced and upgraded to 250w by Graham Fowler of Trichord research, so no problem driving speakers, pre amp is a Copland CTA 301 valve pre (on board valve MM stage) preferred listening volume moderate to loud, no real restrictions on speaking siting.
The output below 40Hz is super flat, would you Pm me details of your set-up rather than disrupting the thread?Yes, that’s what they’re set to atm, and why the above 40 output and where my room modes are are lower than the 20hz level, so maybe being a bit too destructive, going to manually set some of the subs parameters and rerun some more sims
IME a conventional box speaker that extends to the room's modal frequencies WILL excite these frequencies.
e.g. take two conventional box speakers of similar designs, one that is flat to 30Hz and one that is flat to 20Hz. The flat to 30Hz speaker will excite room modes above 30Hz just as much as the flat to 20Hz speaker.
The OP hasn't provided the height dimension of his room, but his length and width axial modes are 34Hz and 42Hz.
It just means that you might experience a build up of excess energy around those frequencies and multiples of those frequencies, measuring your room would show you the exact extent of the issue, you can easily cure ‘boom’ with just a touch ofEQ, ie reducing a bass peak by the requisite dB reduction.The height of the room is 8ft, the length and width axial modes being 34Hz and 42Hz , what exactly does that mean in lay mans terms please.