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PA Systems A forum for discussion of all parts of a sound reinforcement or DJ system: loudspeakers, mixers (desks) etc.

Choosing PA system...
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Old 1st February 2018, 12:22 PM   #11
turk 182 is online now turk 182  Canada
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being the Cinema install series is meant to to be "mounted into a wall" what sort of baffling system are you going to use?
if you plan to make this into a mobile rig i'm interested to see what you come up with to retain the pattern control without a wide baffle.
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Old 1st February 2018, 10:14 PM   #12
125dbmonster is offline 125dbmonster  Australia
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Quote:
Originally Posted by turk 182 View Post
being the Cinema install series is meant to to be "mounted into a wall" what sort of baffling system are you going to use?
if you plan to make this into a mobile rig i'm interested to see what you come up with to retain the pattern control without a wide baffle.
Actually in the Owners Manual for the Cinema Series there is no mention of such additional baffle/boundary effect as an aid to specified pattern control, and in actual fact are tested without such, boundary aids for directional sound propagation. I believe this may well be an assumption on your part w/o correct research with all due respect of coarse for your experience

I have contacted JBL Professional in USA to confirm access to spare parts and specifics of mounting my JBL Horns and as a little fun the application bestowed upon them

They can and will stand alone in field and play effectively to their specifications. Just like any other horn speaker with their new friends the Twin 21" bass Reflex Cabs.

Next !

Last edited by 125dbmonster; 1st February 2018 at 10:22 PM.
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Old 2nd February 2018, 11:01 AM   #13
turk 182 is online now turk 182  Canada
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well i've installed a few in theaters locally but what i know is irrelevant.
if you where interested in discussing your system why didn't you start your own thread?
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Old 2nd February 2018, 11:11 PM   #14
125dbmonster is offline 125dbmonster  Australia
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Originally Posted by turk 182 View Post
well i've installed a few in theaters locally but what i know is irrelevant.
if you where interested in discussing your system why didn't you start your own thread?
Is Ok, Champ, I don't want any beef, this is my 4th post in this Forum and it's obvious already that anything I have stated directly from User Guides/information directly from Manufacturer itself will be challenged to what end, amusement I guess.

As far as I'm concerned "Photos or it is a lie/didn't occur"
You are entitled you your own opinion but not your own facts.

I have nothing further to add to this Forum and will be deleting my User Name and Profile directly/
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Old 3rd February 2018, 01:26 AM   #15
Sonce is offline Sonce  Macedonia
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Quote:
Originally Posted by 125dbmonster View Post
This JBL Cinema Horn rig is 100dB efficient for the first watt at 27Hz and beyond 1200Hz 117dB efficient
Quote:
Originally Posted by 125dbmonster View Post
I just state stuff from the book of JBL4632 Specifications.
Actually, JBL 2425 driver in JBL 4632 high section has 116 dB/2.83V/1m sensitivity, which is very high, indeed:
http://www.jblproservice.com/pdf/The...s/4632M-HF.pdf

Quote:
Originally Posted by wg_ski View Post
Probably at 3 kHz. 6 dB less at the low corner of the horn, and 6dB per octave less above 3k.
And a very narrow pattern horn......
No, at all accounts.
Horizontal dispersion is 90 degrees, and vertical is 50 degrees (in-wall mounting). No surprise, it has to cover all seats in the cinema!

Quote:
Originally Posted by 125dbmonster View Post
This Rig is an out door field system run from a battery, efficiency is the key to a successful set
Very interesting idea! Yes, it is very efficient (106 dB mid section sensitivity), but 4632 mid/high section is very cumbersome (61"x30"x18"), heavy (125 lbs) and fragile for handling. You have to build appropriate cabinet to mount the 4632 mid/high section in it.
Did you examine Dynacord FX12-PRO horn mid/high section with the same 106 dB sensitivity, but with very compact dimensions (24"x24"x32") and 109 lbs weight?

Quote:
Originally Posted by turk 182 View Post
being the Cinema install series is meant to to be "mounted into a wall" what sort of baffling system are you going to use?
if you plan to make this into a mobile rig i'm interested to see what you come up with to retain the pattern control without a wide baffle.
Without additional baffle (wall) there may be some loss of control between 250 and 600 Hz, but nothing serious because mid horn section is huge, 30" wide.
A year ago I checked a JBL 5732 (smaller brother of 4632) in one small local cinema - it is mounted in front of the wall (not into it), but it covers all seats without problems. Outdoor field is different, of course, but I think it will be OK.

Quote:
Originally Posted by turk 182 View Post
if you where interested in discussing your system why didn't you start your own thread?
I can concur with you that 125dbmonster made some sort of threadjacking here, but his use of cinema speakers for battery powered outdoor system is very interesting.

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Originally Posted by 125dbmonster View Post
I have nothing further to add to this Forum and will be deleting my User Name and Profile directly/
No need for such drastic actions, please start another thread for your system.

Last edited by Sonce; 3rd February 2018 at 01:47 AM.
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Old 3rd February 2018, 01:36 AM   #16
125dbmonster is offline 125dbmonster  Australia
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No idea how to start a thread, sorry. Forum new person, post 5
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Old 3rd February 2018, 02:46 AM   #17
Sonce is offline Sonce  Macedonia
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On the left column "Forums" chose appropriate theme, say Multiway. Up on the left corner click the button "New thread".
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Old 3rd February 2018, 03:02 AM   #18
Sonce is offline Sonce  Macedonia
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Quote:
Originally Posted by diy1995 View Post
I need PA system for 100m2 outdoors (most people are usually at smaller space, say like 40m2), 50 people maximum, average of 30-40.
I had already bought Zeck PT7 power amplifier, 2x 700w @ 4ohm, 2x 450w @ 8ohm and 1400w @ 8ohm bridged and it sounds good.
Any pair of 8-ohm boxes with 15" plus 1" exit driver (with 44/50 mm voice coil) will do it, even Behringer.
Jsixis posted a good idea: your Zeck amp on one channel feeding one pair of 15"+1" and other channel feeding two subs (18"). You need one cheap active two-way crossover to make this working.
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Old 3rd February 2018, 03:37 AM   #19
125dbmonster is offline 125dbmonster  Australia
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Originally Posted by 125dbmonster View Post
No idea how to start a thread, sorry. Forum new person, post 5
Quote:
Originally Posted by Sonce View Post
On the left column "Forums" chose appropriate theme, say Multiway. Up on the left corner click the button "New thread".

Dunno, no idea. is Ok, I lived to now happy with what I do W/O this Forum, so not a big deal, no loss to anyone

Have fun. Bye.,


MODERATORS PLEASE DELETE MY PROFILE AS I HAVE NO IDEA HOW
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Old 3rd February 2018, 08:53 AM   #20
turk 182 is online now turk 182  Canada
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i merely asked a question that i felt was pertinent if that put you in a place where you felt insulted/ challenged ,not my intent, sorry.
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