JBL Pro 3677 Have arrived!!! - Page 26 - AVS Forum | Home Theater Discussions And Reviews
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post #751 of 757 Old 06-27-2017, 01:08 PM
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yes, you are right about customizing a speaker, however these are jbl components that are interchangeable. the only difference is that the upgraded components improve upon the slight deficiencies of the stock components. If jbl used the 2226 and 2426, the 3677 would sell for double the price. and i don't have and did not have computer software when i did the upgrade, i had an audio control RTA that cost me $1000 in 2005 that confirmed an even flatter response with the upgrade than with the stock. the audio control is a 31 band rta with a very precise calibrated mic. Try the components for yourself, i think you'll agree.
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post #752 of 757 Old 06-27-2017, 01:15 PM - Thread Starter
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i was just looking at your setup cdy. its quite beautiful. it has a classic cinema feel to it. nice work.
Thank you very much!
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post #753 of 757 Old 06-27-2017, 01:33 PM
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Audio Control SA-3052 was the analyzer we used to eq our auditoriums at the multiplex i used to manage. The systems had the primary eq done by the acoustic contractors we used when we were building, however, it was company policy to check eq once a year among other things to ensure optimum performance. we used 35mm film at the time and were just beginning the transition to digital. the brightness spec for the film was 16 foot lamberts in the center, dimming to 12 foot lamberts in the corners. With digital the smpte spec was 14 foot lamberts across the screen. we used 3000 to 6000 watt xenon short arc lamps by osram in our projectors depending on the screen and auditorium size. Our screens cost over 14000 dollars a piece back in 2005. our lenses were by schneider optics and were very expensive hand made in germany. if i remember correctly, our scope(2.39:1) lenses cost over $6000 a piece, the flat (1.85:1) lenses were about less than half that. brass apertures had to be hand filed to screen size. It was a lot more work to run film than digital. Our digital houses would have a hard disk shipped to the theatre the week of the release, then for the big budget releases, they would send the encryption info on a thumb drive the night before release to minimize the risk of pirating. the film would come in canisters and way 45-60 pounds. a movie like a harry potter would be 9 reels, a movie like benchwarmers would be 5 reels. each reel was 2000 feet, and we would load them to 6000 foot reels, then load them on to platters that could play through without stopping for reel changes like they had to back in the day.

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post #754 of 757 Old 06-27-2017, 01:41 PM
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Get REW, use any decent measurement mic. REW is free and excellent
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post #755 of 757 Old 06-27-2017, 01:47 PM
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im not sure a computer program could be calibrated properly without sending it to a lab. that was one thing about the audio contrl sa 3052, the mics were of scientific quality and were calibrated to the specific unit you had at their lab
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post #756 of 757 Old 06-27-2017, 01:53 PM - Thread Starter
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im not sure a computer program could be calibrated properly without sending it to a lab. that was one thing about the audio contrl sa 3052, the mics were of scientific quality and were calibrated to the specific unit you had at their lab
The Umik-1 is calibrated and going to be more than accurate enough to accomplish your goals here.
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post #757 of 757 Old 06-27-2017, 06:14 PM
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He did measure, just not what you you are used to. No pics of the results though.
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