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RE: Relevant loudspeaker tests

Posted by tomservo (M) on July 14, 2014 at 10:43:12

In Reply to: RE: Relevant loudspeaker tests posted by Inmate51 on July 13, 2014 at 22:39:25:

" Everybody and their dog have known that speakers were the weak link in the reproduction/reinforcement equipment chains since forever. "

While this is true, it is remarkable (to me as a loudspeaker designer) that the GLT hasn’t been used to improve the loudspeakers performance since it makes the flaws so much more dramatic / audible and in some cases easy to identify or as Dick wished, easier to tie the measurement to what you hear.

In our market, having a dramatically better sounding speaker / design was a large advantage as very often the potential customers compared the possible choices side by side and in that case, marketing budget or name recognition hardly matters at all.

While we don’t sell hifi speakers or to the hifi market, the principals are identical, the goal or my goal anyway is to have faithful reproduction and my thought was that many here are DIY’rs, many of which would be capable of doing a GLT.

It’s too late to refine design that has been purchased but this is a valuable tool for the developer or person doing R&D or for that matter if one wanted a fair way to evaluate how faithful the various choices of “weak links” were.

Now, I don’t know how many large spaces you have been in where state of the art big name “concert sound” is used for music but that is what was usually installed in stadiums and the sound is “concert like”.
On the other hand, the difference between concert sound and what can be done our way is pretty audible even captured by you guessed it, a microphone on a camcorder or Iphone.

Pop on your headphones and check a couple of video’s, you can hear loudspeakers in very large spaces which will pass several generations of audio in a GLT and sound totally different than “concert sound” for 75,000 - 100,000+ people and it sounds essentially the same everywhere.
Some samples;
A very powerful system located in the scoreboard.

https://www.dropbox.com/s/oyosfc3adc6j1du/20130723135350.mts

A smaller system in the scoreboard, recorded at 700 feet.

https://www.dropbox.com/s/tnsw5mb4v5vdlwq/20120726122124.mts
https://www.dropbox.com/s/lqeg3cf0daqv9ti/20120726114748.mts

A very cold distributed system converted to our loudspeakers.

https://www.dropbox.com/s/1nhx980w24ehxls/20131208154446.mts

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