OK… now you'll all realize why I'm taking so long to post my big "impressions" article! Sorry about the scrolling, if I resize it to fit in the BBS, no one could read the text!
Below is a frequency response plot that I took a few hours ago. I wanted to see if I could actually chart the different responses from an M60 up against the wall, 12" out and 18" out. In this case, I also added a plot for 18" out with a sound blanket on the floor and wall alongside the speaker. This plot is for the M60 by itself; receiver set to "large" and sub off.
I've been mentioning in this forum for awhile how problematic my room is, and I've been doing some free-hand drawn plotting here and there with my RS meter and a disc of test tones that I made…. I probably have 30 of them at this point! Looking at this one though, I decided to draw it in Photoshop (instead of scanning a hand drawn one) and post it here for opinions.
This shows the enormous peaks and valleys that I'm dealing with…one of which is a 25db swing! The area where that valley is centered (60Hz) also reflects in plots from my Left speaker AND the sub… i.e., it's the room, not the M60.
There's a photo positioned in the upper-right corner of the graph to demonstrate the setup as far as where the speaker is located. Here's a photo showing the setup with the sound blanket:
FWIW, I've plotted the sub out of the corner position as well and find it plots close to the same for all locations, so I figure I might as well leave it in the corner for aesthetics and gain.
I tried the blanket because I thought many of the problems were reflections from the floor and wall to the right. As you can tell, the plot with the sound blanket helps a bit, but not much. Now I know that room plots are always a bit scary looking- they never are as smooth as one would hope. But this chart really looks to be off the…ummm…charts! In all honest, I'm not unhappy with the way things sound in comparison to my old speakers, but I have to believe it would be much better if I can smooth some of this out!
As I've mentioned here, I'm considering a BFD to help with my bass situation. If I change my M60s to "small" from my current "large" setting and enable the sub (with BFD) handle all the bass, maybe I can at least tame the peaks.
Any thoughts? Burn the house down and start again?
