XXL room with 100 people

What is the best loudspeaker compromise for playing music in a very large 150m2 room with 100 pers.

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What is the consensus? Which type of speaker gives the best coverage, intelligibility and wide sweet spot (forget about pinpoint imaging for 100 people....just the best vague general stereo image for the maximum amount of people)

Let's assume a 3m or 3.50m ceiling height. Part of the room can have a raised floor for better line of sight over the front of the crowd.

You can choose a maximum of 2 options.
 
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Max dB is usually regulated for business permit and permit type
and we have no average or Max dB rating wanted.
75 dB? 85 dB? 90 dB? 100 dB

150m2 or approximately 1,600 square feet
is easily covered with typical High efficiency live sound system.

Rather generic combination of direct radiators and compression horns
and if a sub is wanted.
Depending on Genre of music
live performance or music playback.
 
Can't put regular pa system for a hifi bar can we? in that sense something more hifi kind might be nice, even if it was rather regular PA because there is nothing wrong with it. Something that might give more emotion being more appealing to eye than Warnex painted rectangles, if nothing else 🙂 In a bar one can get excitation to all senses, sight, taste, smell, hearing, and touch, so perhaps tingle them all somehow for memorable experience. Audio is just one of them, and significant one, quite a powerful passage to emotion.
 
Max dB is usually regulated for business permit and permit type
and we have no average or Max dB rating wanted.
75 dB? 85 dB? 90 dB? 100 dB
Where I live max dB allowed goes up when the tea money goes up 😁

But I don't want to play so loud that a conversation becomes difficult or staff can develop hearing damage from constant exposure. So I guess no louder than 85 db.
 
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So don’t permit the music sound field to compete with the telephone band…..approx 400hz up to 3khz…..this where you don’t want patrons and staff to have to compete with each other for conversation value. Break out this zone and keep it diffuse…..the ranges above and below can be directional or other…..here’s how to break it out

sub bass….80hz on down……multiple subs all over…..enough to excite all room modes with enough short wave interaction for the low frequency response to ‘ripple out’ to as flat as flat can get in a chaotic wavefront closed acoustic space.

80hz up to 400hz or so…..midbass….tactile, dynamic,…air movement……you can keep these frequencies direct and you won’t have to worry too much about modes or nulls if the high pass filter is steep enough. Installation clutter and patrons will reduce floor bounce cancellations and such

Midrange…..diffuse….dual mono……nothing on axis…..even coverage

treble……a combination of diffuse and direct. Use the upper frequency band in stereo if you wish….just make sure the power response remains even or declining as would be desired in a home HiFi environment.
 
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Nice ! we have our ways too.
Straight to the underground the volume gets higher at sunrise.
Agree also with @tmuikku
There is likely a need for a inspiring piece, not only sound but a piece of art.
So it is a matter of opinion or maybe even region, what exotic type speaker would be the attraction.
Could be large horns, color , size etc etc. Maybe it is a question for you. What is something exotic and artsy system
in the area that would bring people in.
I often think it is larger than necessary systems or pieces the average person cant have in their home.
Somewhere to go so they can experience something unique.

Or much like a entertainment venue you could ask guests or collectors to bring their systems in.
Here in the states, Ojas speakers has done exhibitions of his large vintage inspired system. Now at
Art gallery's and Museums . And seems to pack them rather well with very high attendance. The museums and gallery
are happy. He brings in new fans since none audiophiles attend already in the gallery .
Audio is uncommon for a gallery, some upset feeling it doesnt
even belong there. Because attendance is so high, the directors dont mind.
Large multi cells and extreme sized subwoofers, rather considered too much or over done. Is part of the attraction.

He claims non audiophiles and even people who dont care much for music, often end up spending hours in the room.
Many come back the next day, spending hours again. Since the presentation and presence of the system
is way beyond the average home system

1727750638245.png
 
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So it is a matter of opinion or maybe even region, what exotic type speaker would be the attraction.
Could be large horns, color , size etc etc. Maybe it is a question for you. What is something exotic and artsy system
in the area that would bring people in.
I often think it is larger than necessary systems or pieces the average person cant have in their home.
Somewhere to go so they can experience something unique.
True. 12 year ago I started a pizza place. A few months after opening I built two giant bipole spiral back loaded cornu horns with fostex FR drivers. They were 1.2m diameter and 40cm thick suspended with chains in the middle of the restaurant. They sounded interesting but not very good to be honest. But it was an amazing conversation piece, people loved them and actually came back to show others. After a few years the place became so busy I had to remove them so I could add more tables. Even years later people tell me they miss those speakers.

That is one of the reasons I like open baffle. They are different. Imagine the visual (and sonic) impact of floor to ceiling baffles with multiple 21" drivers on it.

W 21"
W 21"
M 6.5"
T Heil AMT
M 6.5"
W 21"
W 21"

Even if you won't remember the sound you will remember the looks. But a full OJAS system with their big sub(s) and multi cell horns would be pretty memorable as well.
 
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I already told you and I will tell you again, a horn sytstem like the JBL cinema system i mentioned (or even the Ojas system mention above) is the best solution. And you an make it as interesting as you want. Most listening bars use old Altec or Kiplish or JBL gear for a reason. No OB or line array or omni speaker will ever do that. You could also buy the very expensive JBL M2 or 4367, or the even more expensive Kiplish Jubilee or Kiplishhorn, or restore some old Altec horns, or make something similar yourself....