Question about EQ and rising response on subs

[netwerks]

I notice that a few of people in here have recommended to mimic a "reverse eq curve" based on the response charts to get a "flat eq" starting point for subs.

My question is that if you do this with a pair of cabs and then add more cabs to the stack will it hump back up in the areas you compensated for or will it continue to become even "flatter"?

[Bill Fitzmaurice]

If you're using one cab outdoors you can use the SPL charts as a basis for a reverse EQ curve, as that's how they were measured. Otherwise the only way to know how to EQ to flat is with an RTA. Tops can be reverse EQd from the charts as a starting point, as they are relatively unaffected by room modes. With subs room modes can be the dominant factor.

[netwerks]

If you're using one cab outdoors you can use the SPL charts as a basis for a reverse EQ curve, as that's how they were measured. Otherwise the only way to know how to EQ to flat is with an RTA. Tops can be reverse EQd from the charts as a starting point, as they are relatively unaffected by room modes. With subs room modes can be the dominant factor.

OK now if I reverse the curve (outdoors) for one sub and then add 3 more without adjusting the EQ, will it have a negative effect or become flatter?

[Bill Fitzmaurice]

http://billfitzmaurice.info/forum/viewt ... ?f=1&t=398