[nick72]

Happy New Years Everyone!

I already used REW and a BFD to equalize (as best as I could) my puny Klipsch KSW-10 subwoofer for my living room which is open to the dining and kitchen area.

Today though, I revisited REW in hopes in it assisting me in determining possible room acoustics options (if any) since I find the room sounds pretty terrible.

Reading the REW Help File, it seems the Impulse Response tab could be helpful in this regard.

So I ran 8, 1M full range frequency sweeps on my left Ascend Acoustics CBM-170 speaker at 75 db to get as much detail as possible (first graph below) being driven by a Yamaha HTR-5560 75 Watt x 5 receiving running in 2 channel mode.

To my great surprise, my impulse graph looks beyond bad when compared to the Help File examples and other Impulse Response plots posted in this forum.
I have a significant hill (distortion?) before the actual impulse. This is then followed by a significant delay before all the energy dissipates.

After seeing what may be distortion, I’m currently more concerned about the left side of the impulse. Perhaps it’s pointing to one of the reasons why my room sounds so bad?

I also tried only the subwoofer with the BFD filters disabled(2nd and 3rd graph).
Hmm…Seemed similar to with regard to the left of the impulse.
Finally, I ran a sweep with my BFD filters enabled. (4rth and 5th graph)This seemed better in terms of the left side of the impulse but I have no clue why?

I was wondering if anyone has any insight as to what I’m doing wrong (if anything).
Is that really all distortion on the left of the impulse? If so, could the receiver be introducing it? The speaker? At 75db? I tried the right speaker as well.. Same thing..

Any advice would be greatly appreciated…
Thanks
Nick