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What *does* make a difference?, Doesn't ABXing show more differences on some things?
post Nov 8 2010, 06:01
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I've been reluctant to post this because they seem like stupid questions, but my beliefs have been turned upside down so much this week i donno what's "stupid" anymore. So, here i go, even though i'd bet that all three comparisons below would be detectable.

Note that none of this is about perceived quality. It's about not being able to tell appreciable differences via ABXing.

I've been reading up on ABX tests all week and i just give up. I don't get it. There seem to be a few stand-outs such as cables, and devices with D/A converters that don't make any difference, but i'm about ready to throw up my hands in frustration. I just don't get it.

Speakers can be so physically different. I've got the Anthony Gallo Acoustic Reference 3.1's. They are about 3' tall, have rounded "cabinets" around the cones, a cylindrical tweeter and a 10" side firing driver. How can they sound the same as a speaker built around a single fostex driver, or an 8' tall 3' wide Sound Labs panel speaker or a Wilson Audio Maxx ( http://www.wilsonaudio.com/product_images/...groom_large.jpg ).

It is the consensus of the forum that tube amps, class t/d and class A/AB of the same relative power sound the same for the most part? What about different tubes in tube amps? Is tube rolling pointless from a sonic perspective? I mean again, tube amps. and the other types are working in a very different physical manner so how can they not be detectable from one another?

I saw some snickering at room treatments. Is the forum suggesting that room treatments and digital room correction make little to no difference in sound quality? I mean hard/absorbent surfaces do effect what frequencies reach your ears at what times (or at all), so my mind says that logically has to make a difference. Digitally flattening out a response curve has to effect the sound, right? Now, i'm not talking about the *value* of such treatments. Most of the time i see an expensive bass trap or a pricey colorful audiophile pillow that i'm supposed to put on my wall i think "I bet my mate who's a quilter could make me something that would do that same thing or i could just hang a blanket on the wall" Regardless of whether or not you use the $2k room treatment, change your curtains or move the couch for the same effect, the effect wouldn't likely be a placebo would it? Why would recording studios and concert halls work so hard at it?


This post has been edited by BearcatSandor: Nov 8 2010, 06:02

Music lover and recovering high end audiophile
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post Nov 10 2010, 20:24
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Subwoofers: Optimum Number and Locations
by Todd Welti, Research Acoustician, Harman International Industries, Inc.
"Intuition tells us that putting a large number of subwoofers at different locations in a room is likely to excite room modes in a more “balanced” manner, as compared to a single subwoofer. This idea has potential where there is not a single listening location, but rather a listening area."

Low-Frequency Optimization Using Multiple Subwoofers*
by Todd Welti and Allan Devantier
At low frequencies the listening environment has a significant impact on the sound quality of an audio system. Standing waves within the room cause large frequency-response variations at the listening locations. Furthermore, the frequency response changes significantly from one listening location to another; therefore the system cannot be equalized effectively. However, through the use of multiple subwoofers the seat-to-seat variation in the frequency response can be reduced significantly, allowing subsequent equalization to be more effective.

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Posts in this topic
- BearcatSandor   What *does* make a difference?   Nov 8 2010, 06:01
- - saratoga   QUOTE (BearcatSandor @ Nov 8 2010, 00:01)...   Nov 8 2010, 06:29
|- - greynol   QUOTE (saratoga @ Nov 7 2010, 21:29) Diff...   Nov 8 2010, 06:50
- - Arnold B. Krueger   QUOTE (BearcatSandor @ Nov 8 2010, 00:01)...   Nov 8 2010, 21:11
- - BearcatSandor   Thanks for the replies folks. That does make me fe...   Nov 8 2010, 21:34
- - Josh358   QUOTE (BearcatSandor @ Nov 8 2010, 00:01)...   Nov 9 2010, 03:45
|- - BearcatSandor   QUOTE (Josh358 @ Nov 8 2010, 19:45) I agr...   Nov 9 2010, 19:12
|- - Arnold B. Krueger   QUOTE (BearcatSandor @ Nov 9 2010, 13:12)...   Nov 9 2010, 21:38
|- - knutinh   QUOTE (Arnold B. Krueger @ Nov 9 2010, 21...   Nov 10 2010, 09:57
- - BearcatSandor   Thanks for the info Arnold. I'm still new at a...   Nov 9 2010, 22:50
|- - Josh358   QUOTE (BearcatSandor @ Nov 9 2010, 16:50)...   Nov 10 2010, 01:07
- - BearcatSandor   Thanks very much for all that Josh. I will look in...   Nov 10 2010, 07:20
|- - knutinh   QUOTE (BearcatSandor @ Nov 10 2010, 07:20...   Nov 10 2010, 09:53
|- - Josh358   QUOTE (BearcatSandor @ Nov 10 2010, 01:20...   Nov 11 2010, 00:39
- - BearcatSandor   This is the email that contains the information on...   Nov 10 2010, 10:14
|- - Arnold B. Krueger   QUOTE (BearcatSandor @ Nov 10 2010, 04:14...   Nov 10 2010, 14:09
- - knutinh   Subwoofers: Optimum Number and Locations by Todd W...   Nov 10 2010, 20:24
- - item   QUOTE (BearcatSandor @ Nov 8 2010, 06:01)...   Oct 8 2012, 19:41
- - greynol   Not only is that overly-simplistic, it is simply n...   Oct 9 2012, 05:10
|- - item   QUOTE (greynol @ Oct 9 2012, 05:10) Not o...   Oct 9 2012, 12:33
|- - probedb   QUOTE (item @ Oct 9 2012, 12:33) Of cours...   Oct 9 2012, 12:54
|- - item   QUOTE (probedb @ Oct 9 2012, 12:54) QUOTE...   Oct 9 2012, 14:17
- - greynol   If not trolling it does demonstrate a gross lack o...   Oct 9 2012, 15:37

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