Drew,
Nulls can be fixed with EQ - with some limitations. I have Eq'd to +12db with a pair of Velodyne SPLR 8 subs (1000wpc internal amps IIRC) and achieved excellent results. To muster +12db, I doubled down on the SPLR's internal EQ and added extra maximum EQ in my SMS sub controller. This approach IS DEFINITELY NOT recommended by Velodyne, but I did it anyway. Make no mistake, it worked....in my application.
I suspect that the real reason this approach can work well in music only systems is because my max EQ occured below 35hz where the pair of 8" drivers in the subs conked out. In actual use (playing music) there's little sustained signal there. OTOH, the EQ'd subs performed like a champ running test sweeps! I won't disagree with you that this approach lacks "elegance" and, in fact, could prove risky if amplification demands exceed the power available.
The real point I was making Re: DEQX powered speakers, however, is that straight EQ (including bass nulls) is the theory behind the design. I agree that you have correctly pointed out one significant limitation of the "brute force" approach.
Marty
Nulls can be fixed with EQ - with some limitations. I have Eq'd to +12db with a pair of Velodyne SPLR 8 subs (1000wpc internal amps IIRC) and achieved excellent results. To muster +12db, I doubled down on the SPLR's internal EQ and added extra maximum EQ in my SMS sub controller. This approach IS DEFINITELY NOT recommended by Velodyne, but I did it anyway. Make no mistake, it worked....in my application.
I suspect that the real reason this approach can work well in music only systems is because my max EQ occured below 35hz where the pair of 8" drivers in the subs conked out. In actual use (playing music) there's little sustained signal there. OTOH, the EQ'd subs performed like a champ running test sweeps! I won't disagree with you that this approach lacks "elegance" and, in fact, could prove risky if amplification demands exceed the power available.
The real point I was making Re: DEQX powered speakers, however, is that straight EQ (including bass nulls) is the theory behind the design. I agree that you have correctly pointed out one significant limitation of the "brute force" approach.
Marty