General PA Setup - not BFM (yet) Looking for thoughts
Posted: Sun Sep 18, 2016 1:55 pm
All,
I thought I'd ask here because of the wealth of knowledge and experience that Y'all have.
I go to a church with a conventional direct-radiating setup. FOH mains are 4 JBL SP-215-9 (or look like them; I used to own a pair myself - sold them to build BFM) and 4 QSC KW181 that are located under the tall platform which puts the subs behind a lower 8' radius platform. The FOH mains are combined in pairs side by side - like everyone configures them - and are about 2' in front of the tall part of the platform on either side. The room is a typical pole building which is about 75' X 120' with a full basketball court with 20' walls; the stage and everything is at one end. The console is a Behringer X32; all speaker processing is done in the console.
They would like to do a PA reset in a few weeks to correct a few issues and to clean up several of the permanently-temporary modifications made to the interconnects over the past 3 years.
Some of the folks involved are "professionals" - which tends to mean to me that they partly hear with their eyes. In order to obtain the latitude to improve the system by introducing better solutions later, I have to prove myself by improving what is there already.
In considering the subwoofer placement sticky, I'm thinking that we might be better off moving the subs to the one available corner in order to corner load them. The sticky (rightfully so) doesn't discuss doing this with "conventional" subs, does the same set of guidelines apply? Should I stack them in a 2 X 2 and corner fire them, or do I need to do something else, or are they better off being left where they are now? It feels to me that the lower platform in front of this horizontal array of subs is providing some form of loading that may or may not be helpful. A concern with moving them to the corner is the delay due to the subs being 16 to 18' behind the mains; are there other things that I should be thinking of as well?
The FOH in this space - as you can imagine - is not set up correctly; the direct field ends after the first 5 or 6 rows of seats; the console is entirely in the reverberant field. I'm not in a position to address that now; I'm thinking that OT12J would be a good choice - eventually. The first thing I'd likely address gear-wise is to get them to put WH8's in place instead of the Yammy powered speakers that they are using now. One step at a time, I guess. I'll start to work on cost-effective room treatments next (nasty 250 to 300 hz resonance).
All this makes me wish that I'd completed my DR200 build along with 4 T39s so that I could temporarily (yes, I know) audition them to demonstrate how it could sound without moving any of the existing gear.
I appreciate any thoughts that y'all might have.
I thought I'd ask here because of the wealth of knowledge and experience that Y'all have.
I go to a church with a conventional direct-radiating setup. FOH mains are 4 JBL SP-215-9 (or look like them; I used to own a pair myself - sold them to build BFM) and 4 QSC KW181 that are located under the tall platform which puts the subs behind a lower 8' radius platform. The FOH mains are combined in pairs side by side - like everyone configures them - and are about 2' in front of the tall part of the platform on either side. The room is a typical pole building which is about 75' X 120' with a full basketball court with 20' walls; the stage and everything is at one end. The console is a Behringer X32; all speaker processing is done in the console.
They would like to do a PA reset in a few weeks to correct a few issues and to clean up several of the permanently-temporary modifications made to the interconnects over the past 3 years.
Some of the folks involved are "professionals" - which tends to mean to me that they partly hear with their eyes. In order to obtain the latitude to improve the system by introducing better solutions later, I have to prove myself by improving what is there already.
In considering the subwoofer placement sticky, I'm thinking that we might be better off moving the subs to the one available corner in order to corner load them. The sticky (rightfully so) doesn't discuss doing this with "conventional" subs, does the same set of guidelines apply? Should I stack them in a 2 X 2 and corner fire them, or do I need to do something else, or are they better off being left where they are now? It feels to me that the lower platform in front of this horizontal array of subs is providing some form of loading that may or may not be helpful. A concern with moving them to the corner is the delay due to the subs being 16 to 18' behind the mains; are there other things that I should be thinking of as well?
The FOH in this space - as you can imagine - is not set up correctly; the direct field ends after the first 5 or 6 rows of seats; the console is entirely in the reverberant field. I'm not in a position to address that now; I'm thinking that OT12J would be a good choice - eventually. The first thing I'd likely address gear-wise is to get them to put WH8's in place instead of the Yammy powered speakers that they are using now. One step at a time, I guess. I'll start to work on cost-effective room treatments next (nasty 250 to 300 hz resonance).
All this makes me wish that I'd completed my DR200 build along with 4 T39s so that I could temporarily (yes, I know) audition them to demonstrate how it could sound without moving any of the existing gear.
I appreciate any thoughts that y'all might have.