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[Aaron Seymour]

Alrighty....I've got a sound gig this Sat for an outdoor event at a biker bar.  Expected turnout is between 400 and 500.  Here a profile of the stage layout:



It's all outdoors in the layout and the bar area is to the left and it's open air.  I'll be using two Yamaha S215Vs for mains and two SW218Vs for subs.  The mains will be 1000 watts per side and the subs will be 2500 watts each.  So my humble question is which of the layouts below would be best for this gig.



I've done "B" there before with good results but if I can do better I'd sure welcome the suggestions on how to do it.  

BTW - It will be straight up rock bands playing....two guitars, bass, drums and vocals.

[Jonathan McGraw]

A

[Aaron Seymour]

I'm assuming you say A to get the low frequencies from each cab to play nice with each other?

[Tim McCulloch]

"A" will give you better LF coupling and minimize the "power alley" effect up the middle of the house.

Will your top boxes be above head level of the punters down front?

Have fun, good luck.

Tim Mc

[Aaron Seymour]

Thanks for the LF explanation.

Yes, the tops will be above heads of the first and second level...they will be right at head height of the third level and a little under at bar level (not shown on the profile)  I've used setup "B" in the past to get the tops up to head level at the bar...not sure that matters though as most people come down close.

[Toby Mills]

If I was you, I would combine A & B if at all possible.
Can you get another pair of subs?
I would run your B rig, then add another pair of subs in the A position. Run your subs as low mids and feed all the real lows into the ground stacked subs.
Alternatively find a way of flying or raising your mid highs and then put your subs on the ground. Height is your friend for Mid Highs but it is not your friend for subs.

[Aaron Seymour]

I've got another pair of Yamaha S215Vs I can stick into the sub position in set up A.  Or I could slap a single 18 cab on each side under the tops.

PS - Another pair of SW218Vs are next on my purchase list....wish I had them now.

[Tom Reid]

Quote:

Height is your friend for Mid Highs but it is not your friend for subs.

Then why do they make flying subs?

[Vince Byrne]

Tom Reid wrote on Thu, 31 May 2007 17:19

Quote: Height is your friend for Mid Highs but it is not your friend for subs. Then why do they make flying subs?

Pros for flying subs:
- Consistent arrival times with mains = easier time alignment
- More consistent sub SPL across audience = not blasting the front row
- Same distance to subs and mains = more consistent balance between subs and mains

Cons for flying subs:
- No half-plane loading = higher power required
- Can't center cluster = power alley and combing
- They are heavy = more time and money to fly them
- Subs with flyware = a lot more cost
- Indoors, ceiling reflections can really mess up performance

Peace,
Vince

[Cory 'Rooster' McKinnon]

I would go with A to maximize sub efficiency as others have already stated.  I would also consider looking at blocking up the front of the mains to get a better angle (if reasonable and safe) for consistent coverage so you can reach the back seats and not rip off the heads of those up front (minus the yahoos that like to stand in front of the horn of course).