RE: Interesting observations

Posted by Emsquare (A) on September 14, 2012 at 17:13:23

In Reply to: RE: Interesting observations posted by josh358 on September 13, 2012 at 10:15:05:

Ya it is. I appreciated the link to that, Josh. And I still need to go back and absorb the discussion on digital audio. Roger is good at presenting information in a way that is useful and not difficult to absorb. I would like to hear one of his systems for myself. I do not doubt that it's very good.

As far as using an OB H-frame like the GR it would seem intuitive that a dipole bass transducer has potential to match with Magnepan's bass panels. The DWM's should be a nice fit specificly because of the uniform driver behavior. Being a bit of a gear hound it's hard to let go of that 20 Hz. placeholder that's supposed represent full bass reproduction. But I am startinng to suspect that it isn't quite the gold standard that I may have thought. It gets trickier when the wavelengths near the dimensions of listening room. And far more difficult to visualize for me. Corret me if I have forgotten but isn't it the 1/4 wavelengths to the wall(s) that starts to play havoc with bass nodes? Wish I can express the concept a little better than that.

I can see the appeal of using a sub/bass driver at the listening position. Perhaps it's a potent solution to the problem but it would seem to imply a DSP type of delay to get the impulse response right. This is part of the hingepoint to the way that I think about the problem. If we had single transducers that could do it all it would make the task all so easy. Dividing up the spectrum between multiple drivers becomes necessary but opens up all the problems that go with that. To my mind if you can't get the impulse response near perfect then there's always going to be tell tales that go with it. I have to think that DSP is the tool to solve much of these problems. I'm trying to delay launching into that for various reasons. A lot of it is trying to make the effort far more focussed with time, money and knowing more about what I'm doing before I go off half cocked with it. And I am thinking/writing out loud again...

I like Rogers reasoning with his speaker system concerning a transmission line bass implementation. It avoids the problem with the sealed box air spring effect. And although it is a type of ported box design it's a little less compromised than the simpler ported tube builds. I think I can place one behind each speaker and use the vertical tube as a absorber/defractor. Perhaps what little if any localization occurrs at those frequencies would play well with the 2.6's if place directly behind them. In an 11x13 room floor space is hard to come by so there is that appeal to the idea. I can try a couple of tubes behind the speakers before I commit to the build to judge if it's a bad idea to start with.

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Follow Ups Full Thread

Topic - Holy moley, I actually won one? - Emsquare 09:44:05 09/08/12 (33)

RE: that never happens - hemholtz 18:44:53 09/08/12 (30)

RE: that never happens - dazzdax 09:27:56 04/09/13 (0)

RE: that never happens - Emsquare 05:23:01 09/09/12 (4)

RE: that never happens - hemholtz 12:25:19 09/09/12 (3)

RE: that never happens - josh358 18:03:24 09/10/12 (2)

RE: that never happens - hemholtz 19:18:04 09/10/12 (1)

RE: that never happens - josh358 10:08:08 09/11/12 (0)

RE: that never happens - triamp 03:34:45 09/09/12 (23)

RE: that never happens - hemholtz 13:15:20 09/09/12 (0)

RE: that never happens - josh358 06:54:41 09/09/12 (21)

RE: that never happens - triamp 23:37:44 09/09/12 (20)

RE: that never happens - hemholtz 12:34:18 09/10/12 (3)

RE: that never happens - triamp 16:12:48 09/10/12 (1)

RE: that never happens - hemholtz 17:41:24 09/10/12 (0)

RE: that never happens - Emsquare 13:48:20 09/10/12 (0)

RE: that never happens - josh358 06:34:39 09/10/12 (15)

Interesting observations - Emsquare 14:11:34 09/10/12 (12)

RE: Interesting observations - josh358 15:07:14 09/10/12 (11)

RE: Interesting observations - Emsquare 16:38:15 09/11/12 (6)

RE: Interesting observations - josh358 10:15:05 09/13/12 (5)

RE: Interesting observations - Emsquare 17:13:23 09/14/12 (4)

RE: Interesting observations - josh358 18:00:10 09/14/12 (3)

RE: Interesting observations - Emsquare 09:10:57 09/15/12 (2)

RE: Interesting observations - josh358 09:42:21 09/15/12 (1)

RE: Interesting observations - mmlrot1 12:24:25 04/09/13 (0)

RE: Interesting observations - Emsquare 17:49:03 09/10/12 (3)

RE: Interesting observations - hemholtz 17:57:47 09/10/12 (2)

RE: Interesting observations - Emsquare 16:09:29 09/11/12 (1)

RE: Interesting observations - hemholtz 16:59:38 09/11/12 (0)

RE: that never happens - Norman M 09:05:37 09/10/12 (1)

RE: that never happens - josh358 09:37:49 09/10/12 (0)

RE: Holy moley, I actually won one? - JBen 10:36:24 09/08/12 (1)

RE: Holy moley, I actually won one? - Emsquare 15:24:56 09/08/12 (0)

Follow Ups

RE: Interesting observations - Emsquare 17:13:23 09/14/12 (4)

RE: Interesting observations - josh358 18:00:10 09/14/12 (3)

RE: Interesting observations - Emsquare 09:10:57 09/15/12 (2)

RE: Interesting observations - josh358 09:42:21 09/15/12 (1)

RE: Interesting observations - mmlrot1 12:24:25 04/09/13 (0)

RE: Interesting observations

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