Members Dookietwo Posted May 31, 2015 Members Share Posted May 31, 2015 Did a band show in a club with a "DJ" install. Ran across what was the oldest setup I've seen in some time. A pair of 2-15 "scoop" subs and 4 single "scoop" subs a side. Midrange was handled with what looked like 4, 10 inch woofers-in-a-box and some large horn lenses. (jbl?) There was a bunch of bullet tweeters thrown in for good measure. Bass was solid when they played break music but the rest was tinny to say the least. Anyone else run into an old setup like this? Fun to see it up and running yet the 70's are gone.... Dookietwo Link to comment Share on other sites More sharing options...
Members Audiopile Posted May 31, 2015 Members Share Posted May 31, 2015 and some large horn lenses. (jbl?) Yes, the lenses appear to be JBL 2395's. Link to comment Share on other sites More sharing options...
Members Pro Sound Guy Posted May 31, 2015 Members Share Posted May 31, 2015 With the right drivers those can be effective. They have some "issues" because they are what they are.They work better to low pass quite high compared to todays subs. 250hz is where I used to low pass themto the JBL mid box design with the 15" driver and up to JBL 2440's. One can get pretty surprising output fromthose older designs. This was 33years ago or more ago. I would be curious to monkey around with some again with todays modern processors. Link to comment Share on other sites More sharing options...
Members agedhorse Posted May 31, 2015 Members Share Posted May 31, 2015 With DSP and a solid old school design, it's quite possible to get much better performance (if you understand what and why the limits are) than in the good 'ol days. Link to comment Share on other sites More sharing options...
Members dboomer Posted May 31, 2015 Members Share Posted May 31, 2015 Wow ... I used to have a bunch of those old JBL 4520's back in the late 60's. We installed doors on each side that would fold out when we set them up for what we thought would be extra pattern control. Pretty awesome in 1967 terms with 4 of those on each side. Link to comment Share on other sites More sharing options...
Members Pro Sound Guy Posted June 2, 2015 Members Share Posted June 2, 2015 Actually I totally prefer the 15" single scoops. The single scoops seemed to work much better. Link to comment Share on other sites More sharing options...
Members sailorman Posted June 3, 2015 Members Share Posted June 3, 2015 somewhat off topic; I went to plenty of rock concerts in the late 60's early 70's that were brutally loud. 1970 (I think) Quaker City Rock Festival at the Philly Spectrum comes to mind. Grand Funk were the headliners, 3 or 4 Marshall stacks each side, and a PA stack of what I'd guess were large horn loaded cabinets. I was deafened for several days afterward, sitting in the last row (18 years old, earplugs, no way). What the heck amps would they have had available to drive a system to that kind of level back in those early days? Link to comment Share on other sites More sharing options...
Members Pro Sound Guy Posted June 4, 2015 Members Share Posted June 4, 2015 SimpleLots of horn loaded cabinets.You can get a LOT more output from horn loaded boxes with smaller amps and especially lots of horn loaded boxes. Link to comment Share on other sites More sharing options...
CMS Author Craig Vecchione Posted June 5, 2015 CMS Author Share Posted June 5, 2015 Yeah they had to get as much as possible from the cabinet designs because the amps and the speakers were, by today's standards, ridiculously weak. So the extra weight, construction complexity and size of the cabinets was worthwhile. Link to comment Share on other sites More sharing options...
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