Originally Posted by penngray
Bosso, you are playing the world salad game.
Please explain your system in 95 and your system today. You will acknowledge that you used multiple subs to gain better response.
Placement, number of subs and EQ will dictate the response in room. Yes the red trace/gold trace difference is trivial in the REAL world. Again, your pendatic need for a flat response curve is not really a normal occurance for most. You will not hear that in a normal playback situation and you are going to have the XO and the mains blending in in most cases (You argue that PBC XOs high therefore the dip might be noticeable, well that is a problem with the main speakers and not the sub design). Hell, most people have a null in the 150 to 200Hz range because of their main speaker distance to the wall behind it with no treatments. There are nulls in the room, people need to realize that and decide to fix them or not....it does not take this back and forth to know that.
Nothing wrong with wanting incredible measurements but to think its a severe problem enough not to build a dual opposed sub is just crazy. That is the WHOLE discussion, someone is concerned about building a dual sub because of a possible dip in room.....sorry but there was not a need for 4 pages of back and forth on that sort of concern when we all know the benefits of that dual sub design outweights the dip created, we also know how to solve a dip in room. Again, solving it has nothing to do with building any sub box.
Sorry, but I must take issue with some of the ridiculous things in your post.
In '95 I built 2-10 cubes ported 1x18" boxes, 1 in each corner. The red trace is a single sealed sub in one corner of the same room with the same LP in each case.
Word salad game? Pedantic need for a flat response? No need for 4 pages of back and forth when "we all know..."?
I've played bass for 44 years. My first gig at 13 was as a studio session bassist for a country western single in a studio that was staffed by real engineers who wore white shirts and bow ties and smoked pipes.
From that experience to this day, not a single person in a single studio has ever let 22dB swings in the bass go as trivial. In fact, this is such an insane thought that I'm stunned to hear it from anyone with a straight face let alone as being preached from a mountain.
I'm not interested in what 'most people' do or don't do. I'm interested in results. When I see them, I try to pass on the method involved, especially when it's such a simple one as that being discussed here before yourself and LTD decided to make a baloney stew of it.
Please show us a source that describes 22dB swings in FR as 'trivial in the real world' because 'you will not hear that in a normal playback situation', besides yourself.
Really, what next?
I'll bow out here and stop wasting pages in this or any other thread, but, for the record, please stop telling others that 22dB swings in response are trivial in the 'real world' or any other world in the universe for that matter.