OT: JBL SR4733a vs. EAW LA325
John S
Posts: 29
First, thanks for all the help on my DR260 issues. Sorry for the OT post, but hopefully you guys can help out. I've been running pairs of SRX728s with SR4733a tops each side. I've recently come into a pair of EAW LA325's and I'm contemplating subbing those in for the 4733a's. I generally run in clubs of capacity up to 1500. I'm concerned as to whether the LA325's are going to have enough power for the room compared to the 4733a's. I contacted EAW today and they said not to put too much more than 600 watts into the LA325's running full range. I've been hitting each 4733a cab with 2400 watts. Does anyone have an opinion on the LA325's as far as spl output compared to the JBLs?
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Comments
G
Using specs:
EAW @ cont rating (600w) = 127db
@ prog rating (1200w) = 130-131db
JBL @ cont rating (1200w) = 129-130db
@ prog rating (2400w) = 133db
IF you limit the EAW's to 600w, but allow the JBL's to get 2400w, the difference is 6db. The EAW's would have to sound noticably better, in my opinion, to justify swapping out.
DRA
I believe that the 600 watts was continuous, that means pink noise... all frequencies 24/7 ...the rock and roll that we typically reinforce has a duty cycle ( meaning that the speakers are \"off\" centered more than they are \"on\" being pushed or pulled by the amps) well below 50%... that means the 600 watt rated speaker actually see's much less than that during normal use (excluding Dragon Force or other death metal that is ON or off...) now, the speakers can handle short burst audio well in excess of the 600 watt \"continuous\" rating... same goes for jbl, they just use notoriously \"suspect\" rating systems to make the \"me too\" bottom line look better... HEY LOOK, MY speakers can handle 4800 watts! Or, we can put out 133 db...Ya, but at what... one frequency... in a burst for a millisecond...specs don't mean SQUAT :twisted: Until they implement a universal standard you can take those specs and use them for ass wipe :shock:
Plug em in... tune em up...and LISTEN! that's the ONLY way to tell.. PERIOD! when the dust clears... YOUR ears have to be the final judge...
G
Anyway, I've decided to try bi-amping the LA325's this weekend. Looks like I can run 1000w on the lows and 600w into the Mid/Hi. I'm running the DR260 and I think I can get the tunings on the EAW site.
I guess with the \"complex\" internal x-over system already built in, I should probably question the necessity of bi-amping these cabs, but I've been told it makes a noticeable improvement. Any thoughts on this? Good idea or bad idea???
My $.02
Dennis
I would suggest that you do Bi-amp, if you have the time and patients to get it right...but as Dennis said, jazz, reggae, good ole fashioned rock LA all the way... outdoors and as I said extreme metal...punk...jbl...the thing is the not the 8\" but the crossover... I believe...but hey 600 watts is a lot for mids/hi's!
G
Dennis
I have returned your .dwp John, with some changes...I forgot to mention in the email I changed the xover gains as well...
Dra... your ... silly
G
Dennis
So, we need to find a balance between the HPF and LPF of the Sub/tops xover, and weigh the factors... some of which are the power available for the subs and the lo mids...
I imagine once you got the EQ done that the vocals were much warmer? more articulate.. that the highs were less stressed, and more natural...?
Gadget