Originally Posted by noah katz
Less output at tuning freq.
Maybe I'm still missing something, as I'm just stating standard behavior which you can observe in a modeling program that lets you change Ql, like UniBox.
Is there some reason you think this situation wouldn't conform?
I understand the impact at tuning freq, I'm curious about the FR up top.
This began with my question here,
back in the last post on the previous page.
Beast stated "I didn't get much gain up top regardless of how I set the delay on them." Which, caught my attention ... as I expressed previous curiosity wrt mixed alignment summation.
I referenced "the crucial 50-80 region", and "fully additive summation across the full band", and most importantly; "how elements like any type of lossiness, leaks, or internal damping, etc., influence the output, and can those items be attributable to the FR behavior up top?"
I understand the "less output at tuning freq", my query is wrt the FR up top, 50-80 range.
Maybe that initial question dropping off on the previous page didn't help. We can move on, but I did want to answer you.
Specifically, it's been my theoretical understanding when mixing alignments, one could achieve additive acoustic summation down low (with phase/time adjustment), but broad spectrum additive summation could be problematic. So, I immediately was curious and wanted to rule out an execution error (no offense Beast). Or is this more likely a complex 1/4 wave destructive issue?
Originally Posted by beastaudio
So went through some of the big bass scenes last night. This is downright impressive. I am still fine tuning to get the systems gain matched, but right now I am awful close to being there. WOTW and Hulk were absolutely incredible. Underworld super lycan had me worried about the ceiling above my head and caused the PJ lens to shift down. I loved it.
FOTP and Irene was interesting to say the least. I wasn't really sure what I was hearing but there was something that seemed a little off on these two. The bottom end was there, but the whop-whop-whop on the chopper and the barrel-roll on the phoenix seemed to lack a little punch. after doing a little more gain adjustments, I got it all back to what I was hoping though. bottom line is I had the subs just a shade too hot and was missing some of the upper bass that the Danleys aided in supplying by listening at -5. backing off the subs and listening at -2 or so fixed me right up. Same sub level, just more LCR.
All in all, I am mad impressed so far. Now that I do know how to dial it in pretty well, I want to try the other dual 5" ports, and the sealed orientation and graph what each looks like at the LP. After I do that I might try splitting the bandwidth between the two systems and see how that sounds as well. There are just way too many options at my fingertips right now, Lol.
Love this, all of it.
I too have reached that masking point, where significant spectral portions a bit higher in freq just aren't prominent enough for adequate bass experience top to bottom.
Congrats, ... and looking forward to your additional thoughts as you progress even further.