General Asylum: What's the Difference or is there any? by tomservo General audio topics that don't fit into specific categories.

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Posted by tomservo (M ) on January 24, 2012 at 09:23:12

In Reply to: Audiophile vs Music Lover --What's the Difference? posted by thetubeguy1954 on January 24, 2012 at 04:12:17:

I am not sure there is necessarily a difference.
I grew up hanging around my Grampa who had built an early mono hifi and speakers (knight and heath kits) and me being fascinated with the boxes the sound came out of.
At age 9 I was helping him clean up after Church and when the organist came back in to practice, I snuck off and went up into the pipe loft to hear better.
I didn’t know if I should run or what, the pedal notes shook my body and gave me goose bumps, something I never forgot!. Much later, first wanting to be in a band, and having a couple speakers etc, I did sound, after Highschool I was good enough on bass to play in bands.

By then (mid 70’s) I was mixing at clubs for real money and playing and recording for fun. For the next 10 years or so I bounced back and forth from building loudspeakers and doing electronic repair. Around 1980, I went to work at Intersonics, a NASA contractor and while there developed the Servodrive subwoofers that were used for concerts and special effects in the 80’s and 90’s.
Since the late 90’s, I play my bass occasionally for fun, have gotten a synthesizer and am trying to learn that and since then, I have been fortunate to be able to design loudspeakers and electronics for a living.

One of the things which seemed logical when we started the business was to combine multiple interests and so some of our speakers were refined using generation loss recordings. The idea being if the speaker or anything else is perfect, one can make an infinite number of generations with it in the chain.
In reality, many speakers sound funny just recorded once with a measurement microphone, most sound funny at two generations and by three most are unlistenable.
I know you’re a high efficiency enthusiast, maybe you’d get a kick out of this recording.
If you have headphones hooked up to the computer, watch this video.

It was an outdoor demonstration of a J3 Synergy horn loudspeaker in mid December (a new one for large scale hifi like theaters and stadiums etc).
The sensitivity is about 110dB, has a horn mouth that is 48 inches tall and 30 inches wide and a 40v60v pattern with no pattern flip and pattern loss f at about 350Hz.
The pattern control is very pronounced, you can’t really hear it in it’s entirety until the camera guy walks away a bit. You can get an idea how loud this was at about 1:30 when the operator walks up and talks to the guy next to the camera man or at 2:30 when he pans out and shows most of the people are at about 450 feet. The camera guy was also apparently fascinated with the 812 subwoofer but it was too much for his microphones haha.

Best,
Tom
Danley Sound Labs

• the recording   (Open in New Window)

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