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In the Forum: Horn-Loaded Speakers
In the Thread: Bill Gaw: over 50 years of high-end audio experience and time aligned horns.
Post Subject: Three possibilitiesPosted by anthony on: 10/30/2025
 Romy the Cat wrote:
 

Bill has achieved excellent bass with his acoustic treatment. Everything seems fine; everyone nods approvingly. We convince ourselves that the secret lies in how bass reflects off the back wall, and Bill, being ingenious, introduced large panels spaced from the wall to control low frequencies. Wonderful.

 


No, Bills sound is better because he is letting the bass note happen for less time in the room than he was before.  It bounces off all the walls all the time...30Hz is 11.5m long wavelength so does not fit in most rooms... and those big new traps mean it is soaked up more quickly.  The position of the traps within the room matters only to the amount of bass frequencies that can be soaked up, and the sound in the room is better because a bass note now only lasts half a second in the room rather than 1 full second like it did before and it is not messing with that next half second of sound.  


 Romy the Cat wrote:
 

But then Bill switches to Auro. Everything else is the same. The system is calibrated so that the transition from stereo to Auro should sound identical. Yet, in the same room, with the same equipment, I personally find the sound less interesting—and more importantly, the new beautiful bass has vanished. It’s back to what he had months ago: dull and uninspired.

 

Bill has additional subwoofers for surround duties...this is a very different circumstance to the stereo playback.


 Romy the Cat wrote:
 

Now, there are two possibilities.

The first is that the bass improvement had nothing to do with reflections at all—especially since Auro can simulate virtually any imaginable reflections.
 


Auro is by definition a delayed response from the immersive speakers, including a delayed bass response, so is totally different to stereo playback and will always sound quite different. 

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