I was listening to some music and noticed the woofers on my left Klipsch RF-7 move more than the woofers on my right RF-7. The bass coming out of the left RF-7 seems to be more (also has more punch) than the bass coming out of the right RF-7.

Here is a pic to show the placement of the RF-7s.

http://forums.klipsch.com/forums/storage/5/1176312/Klipsch%20002.JPG

The left RF-7 is in a corner while the right RF-7 is not. This could explain why there is more bass coming from the left RF-7 but shouldn't the woofers be moving at the same level regardless of placement? By the way, the A/V receiver trim levels for both speakers is the same (both at 0 dB trim).

Another view of the room.

http://forums.klipsch.com/forums/storage/8/1156198/Room%20001.JPG

If both Trim Levels are set at 0 I would think that there wouldn't be any difference in performance...That being said, have you tried switching the RF-7s around?

My only other thought is if you have an EQ program engaged you may get more natural bass from one location and adjustments from that may explain the difference in woofer movement.

Edit: Are the SPL levels the same from your LP using a test tone?

I can't tell for sure but it looks like the main on the left is closer to a wall than the one on the right. If that is the case then it would explain the uneven bass between the two speakers.

I can't tell for sure but it looks like the main on the left is closer to a wall than the one on the right. If that is the case then it would explain the uneven bass between the two speakers.

That was my first thought, but I wouldn't think that would effect the actual woofer movement that the OP was observing.

If both Trim Levels are set at 0 I would think that there wouldn't be any difference in performance...That being said, have you tried switching the RF-7s around?

My only other thought is if you have an EQ program engaged you may get more natural bass from one location and adjustments from that may explain the difference in woofer movement.

Edit: Are the SPL levels the same from your LP using a test tone? I haven't tried switching the RF-7s around. I'm a bit too lazy to do that. :D

Secondly, I don't have any EQ enabled. Using AVIA, I get the same SPL reading from both main speakers.

I can't tell for sure but it looks like the main on the left is closer to a wall than the one on the right. If that is the case then it would explain the uneven bass between the two speakers. Actually, both speakers are exactly the same distance from the rear wall. However, even if one of them was closer to the rear wall and produced more bass, shouldn't the woofers still be moving at the same "rate?"

Zen, are all the speakers calibrated to the same SPL using a Radio Shack SPL meter, or your receivers auto setup. Maybe you have the dB levels set higher on the one speaker. Your right, having a speaker near a corner would not cause the woofer to be more active, but could cause the bass to be more pronounced. I assume the driver is moving some, or you would not be getting any sound?

One another note, I don't have a subwoofer in my home theater yet and thus run the main speakers as Large. During heavy LFE portions in movies, the woofers seem to move at the same rate. Thus, I guess it must have been the song I was listening too. :confused:

Not sure though.

This is a no brainer here. The reason why the left speaker produces significantly more bass is because it's right up against that wall and the right speaker isn't even close to a wall.

This is a no brainer here. The reason why the left speaker produces significantly more bass is because it's right up against that wall and the right speaker isn't even close to a wall. I understand that, but it doesn't explain why the left's woofers move more than the right's. Once again, it could have been just that song I was listening to as in movies, both speaker's woofers seem to move at the same rate. But, I'm not sure.

Just swap the speaker cables on the back of the receiver to see if the bigger bass moves to the other speaker.

This is a no brainer here. The reason why the left speaker produces significantly more bass is because it's right up against that wall and the right speaker isn't even close to a wall.

I agree with Kain if you look at his original question:

I understand that, but it doesn't explain why the left's woofers move more than the right's. Once again, it could have been just that song I was listening to as in movies, both speaker's woofers seem to move at the same rate. But, I'm not sure.

I also feel it was song specific now that I know more about the situation. ;-)