Hello Again
Sunday, January 27 2007
25:16
With two weeks since my last entry, what to write about? Did a birthday dinner for my Dad last weekend. Went on a field trip to Tukwila this week. MB left for Boston on Friday, will be back next Sunday. We've had two TTA rehearsals now for this season; next one is Wednesday. We are looking at a possible space to move to in Phinney/Greenwood. It has a lot going for it but a daunting and ever-growing list of concerns that we need to get completely ironed out and nailed down before signing a lease. This has to happen in fairly short order.
I'm currently looking at many different options for acoustically treating my living room. Given the odd shape of the place, the bass modes aren't as lumpy as they would be in a box, however they still can be pretty strong. The most egregious however is a bunch of muck in the lower midrange – not really sure what causes this. Resonance between the floor and the underside of the bar? Between the floor and the ceiling? On many recordings it's only noticeable once in a while. However, piano recordings are almost entirely unlistenable. And the third issue is reflections off the side of the bar, screwing up the image. I think the first step will be to treat the bar reflections w/ abosorbing panels. I'm also thinking of putting "flatfusors" (absorbing and diffusing panels) behind the speakers, on the ceiling near the reflection points, and on the "back wall". Given that the back wall has an obtuse angle in the middle of it, that means one that's not really behind me but is parallel w/ the wall behind the speakers, and the other half which is pretty much orthogonal to the line from the left speaker to my head.
I think I've spent about four hours today doing this. And I still will have left bass management. I'm hoping that a good sized tube trap in the right front corner will help out a lot there.
I've been picking up a lot of cds lately. Some of the usual stuff, plus also I'm a bit more inclined towards remasters, especially SACD or DVD-A. I was able to do an interesting test yesterday – the remaster of Music For the Masses has a CD and a DVD. The DVD has various things (a short film, some 5.1 mixes, etc) including a 24-bit stereo version of the entire album. I put the CD in the Rotel and the DVD in the Oppo, queued up the same track on each, and hit play simultaneously. I could then switch back and forth between them using the preamp, albeit with a click-pause-click that was jarring. So, 24-bit DVD in the super-value does-it-all-for-not much Oppo, and 16-bit CD in the costs-four-times-as-much-and-only-plays-CDs Rotel. Within any psychological "noise", I couldn't hear a difference. Which may mean that there was no audible difference between either the two data sets or the two players; or, it may mean that they essentially cancelled each other out. This is also in the as-yet-untreated room, so there were issues there that may have masked things.
I tried a similar comparison between the original CD pressing (in the Oppo) and the remastered CD (in the Rotel), but the volume levels were so drastically different that it wasn't nearly as useful. I am eager to get two exact copies of the same recording (I guess I could burn a disc. . .actually I've done that w/ a couple already), and see if I can hear differences just between the players.
25:16
With two weeks since my last entry, what to write about? Did a birthday dinner for my Dad last weekend. Went on a field trip to Tukwila this week. MB left for Boston on Friday, will be back next Sunday. We've had two TTA rehearsals now for this season; next one is Wednesday. We are looking at a possible space to move to in Phinney/Greenwood. It has a lot going for it but a daunting and ever-growing list of concerns that we need to get completely ironed out and nailed down before signing a lease. This has to happen in fairly short order.
I'm currently looking at many different options for acoustically treating my living room. Given the odd shape of the place, the bass modes aren't as lumpy as they would be in a box, however they still can be pretty strong. The most egregious however is a bunch of muck in the lower midrange – not really sure what causes this. Resonance between the floor and the underside of the bar? Between the floor and the ceiling? On many recordings it's only noticeable once in a while. However, piano recordings are almost entirely unlistenable. And the third issue is reflections off the side of the bar, screwing up the image. I think the first step will be to treat the bar reflections w/ abosorbing panels. I'm also thinking of putting "flatfusors" (absorbing and diffusing panels) behind the speakers, on the ceiling near the reflection points, and on the "back wall". Given that the back wall has an obtuse angle in the middle of it, that means one that's not really behind me but is parallel w/ the wall behind the speakers, and the other half which is pretty much orthogonal to the line from the left speaker to my head.
I think I've spent about four hours today doing this. And I still will have left bass management. I'm hoping that a good sized tube trap in the right front corner will help out a lot there.
I've been picking up a lot of cds lately. Some of the usual stuff, plus also I'm a bit more inclined towards remasters, especially SACD or DVD-A. I was able to do an interesting test yesterday – the remaster of Music For the Masses has a CD and a DVD. The DVD has various things (a short film, some 5.1 mixes, etc) including a 24-bit stereo version of the entire album. I put the CD in the Rotel and the DVD in the Oppo, queued up the same track on each, and hit play simultaneously. I could then switch back and forth between them using the preamp, albeit with a click-pause-click that was jarring. So, 24-bit DVD in the super-value does-it-all-for-not much Oppo, and 16-bit CD in the costs-four-times-as-much-and-only-plays-CDs Rotel. Within any psychological "noise", I couldn't hear a difference. Which may mean that there was no audible difference between either the two data sets or the two players; or, it may mean that they essentially cancelled each other out. This is also in the as-yet-untreated room, so there were issues there that may have masked things.
I tried a similar comparison between the original CD pressing (in the Oppo) and the remastered CD (in the Rotel), but the volume levels were so drastically different that it wasn't nearly as useful. I am eager to get two exact copies of the same recording (I guess I could burn a disc. . .actually I've done that w/ a couple already), and see if I can hear differences just between the players.

