PB2000 graphed in room!

[Bear123]

Hey gang. I have had the PB2000 pretty much since they came out, as I ordered mine the day they came out on the website and live close to SVS. Finally got a chance to do some measurements so here they are. I graphed the PB2000 corner loaded in the front of my room. You can see a pretty bad null at 50Hz. So, I pulled the Polk PSW110 that it replaced out of the attic, and stuck it next to the couch, nearfield, to see what it would do. Check out that monster low end output! 38 Hz woot woot. I got lucky that its best output is 40-60 Hz, right where my null was!



Although I did not mark it, output is very solid down to about 16 Hz before it starts to roll off much. I have a miniDSP that is not set up yet, but the projected FR is flat as a pancake from pretty much 16-100Hz. If I get the miniDSP working, I will post a graph after eq, but I am pretty happy with how flat I got it with no eq.

Woops had the SPL messed up on my new Umik-1 mic, here is a graph I did today after fixing the SPL:

 

[crossedover]

dailing will become an obsession lol

 

[Bear123]

Yeah I am happy with the sub FR for now, but over 100 Hz is a mess, and raising the crossover does nothing to fix it, so I have to figure out what the heck is going on there. Neither YPAO nor manual eq are touching that dropoff, and I have no clue how I am going to fix it as speaker placement is not flexible in my room.

 

[mike c]

try playing with the subwoofer phase

 

[Bear123]

try playing with the subwoofer phase

I did that pretty extensively. I do not have much in the way of different placement options, so I did lots of sweeps with both subs in one phase, then the other, then one at a time and vice versa. Finally, I ended up manually adjusting the PB2000 to around 140 degrees vs 180 which helped smooth the FR a lot. I hate to count my chickens before they hatch, but here is a graph of what REW is predicting once I have the miniDSP in line: