While unable to use either a M80 or VP180... - 10/26/10 12:20 AM
The darn VP-180 threads finally got to me! I haven't done any tweaking in almost a year (since my new TV forced me to renounce dual VP-150 because the lower one was blocking a bit of the screen). So I decided to use my M22s from the back room to try new centrer combinations:
1. 2xM22 straight up
2. 2xM22 upside down to have tweeter closer to ear level
3. 1xM22 straight up
4. 1xM22 upside down
I used ARC to measure the frequency response of each combination. Since each test would take hours, and that the graph showed major problems in bass cancellation, I decided to eliminate both dual M22s as placed below:
Based on the visual graph, I uploaded the room correction for the straight M22
I was actually surprised by a firmer bass (likely improved by having the same 60hz xover for all LCR channels), but I have to admit any other change was not that obvious. After a while, I started to hear the center "too high" with regards to sound stage.
Without downloading the appropriate new room correction parameters, I flipped the speaker upside down. There was a lot of improvement in "vertical center positioning" so after 20 minutes of listening to various things (including dialog, 5.0 music and 2.0 music both with PLIIx and Neo:6).
I'm typing this post while downloading new proper correction. We'll see! The final photo is an attempt to make the new setup less ugly!
(before certain persons raise the issue, I have secured the speaker with two brackets in the front and a metal wire attached to the bolt in the back of the speaker. This is not falling anywhere!)
OKAY. Download completed! Talk to you later!
1. 2xM22 straight up
2. 2xM22 upside down to have tweeter closer to ear level
3. 1xM22 straight up
4. 1xM22 upside down
I used ARC to measure the frequency response of each combination. Since each test would take hours, and that the graph showed major problems in bass cancellation, I decided to eliminate both dual M22s as placed below:
Based on the visual graph, I uploaded the room correction for the straight M22
I was actually surprised by a firmer bass (likely improved by having the same 60hz xover for all LCR channels), but I have to admit any other change was not that obvious. After a while, I started to hear the center "too high" with regards to sound stage.
Without downloading the appropriate new room correction parameters, I flipped the speaker upside down. There was a lot of improvement in "vertical center positioning" so after 20 minutes of listening to various things (including dialog, 5.0 music and 2.0 music both with PLIIx and Neo:6).
I'm typing this post while downloading new proper correction. We'll see! The final photo is an attempt to make the new setup less ugly!
(before certain persons raise the issue, I have secured the speaker with two brackets in the front and a metal wire attached to the bolt in the back of the speaker. This is not falling anywhere!)
OKAY. Download completed! Talk to you later!