SLA pro or omnitop

Short and Transmission Line Arrays for Pros
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AlBrum
Posts: 3
Joined: Sat Sep 26, 2020 4:29 am

SLA pro or omnitop

#1 Post by AlBrum » Mon Sep 28, 2020 9:03 am

Hey,

For live band with sub crossed over at 120Hz , what's the pros and cons of Omnitops vs SLA pros please?

Anyone built both and tried them for live band use?


Weighing up the build and cant work out which would be the better option- small venues (pubs!) with low ceilings and audience spread out across width of the venue: Currently pointing reflex speakers to try and catch the majority of crowd, but not ideal tweeters so 12 crossing over WAY too high- so we have a beaming situation, and cone break up...

Need as even off axis response as possible (no wide high frequencies with no mids please :-)

Looking for quality sound.


Cheers,

Al

NukePooch
Posts: 354
Joined: Mon Jun 30, 2014 8:07 pm
Location: Berea, Kentucky

Re: SLA pro or omnitop

#2 Post by NukePooch » Mon Oct 12, 2020 5:32 pm

Actually I haven't yet tried either SLAs or OTops, but...I have the melded array on my Jacks. The horizontal dispersion is amazing. If you're got 'audience spread out' and the venue is wide, I'd say that OTops with melded arrays will likely do a better job (cover more area) than the SLA Pros...
Just something else to think about...
Built:
4 Jack 112L- 3012HO, melded array
17.5 wide AutoTuba with Infinity 860w
6 Wedgehorn W6 w/ Panel Mount Piezos
2 T48 Slims (15" wide) with 3012LF
4 T48 Fattys (32" wide) with 3015LF

himhimself
Posts: 373
Joined: Fri Nov 13, 2015 9:34 pm
Location: Bloomington IN

Re: SLA pro or omnitop

#3 Post by himhimself » Tue Oct 13, 2020 7:39 am

Can't say enough good things about my otops - they sound great and the horizontal dispersion is outstanding. I've used them outside and the soundstage is practically 180 degrees. Also, people listen with their eyes too, as stupid as we all know that is - it's the reason guys will split the subs. Looks better, sounds worse. Anyway, I was influenced in going with double stacks of otops in part because of how they look, especially now that I built some stands that enhance the prosound look. I'm sure the SLAs sound great too and are smaller, but in my case, the larger otops work better for what I was after.
2xT30 (20", 3012lf)
4xOtop J-array (Beta12, melded/straight piezos)
Truck Tuba (MCM)

AcousticScience
Posts: 137
Joined: Tue Jan 20, 2015 4:37 pm

Re: SLA pro or omnitop

#4 Post by AcousticScience » Wed Oct 14, 2020 4:33 am

The pro of Omnitop is you can cross them slightly lower and the maximum SPL is greater. Since this is a pub I'm thinking this won't be a concern.
The cons of Omnitop is they are bigger and heavier.
Also they don't sound this good
https://www.youtube.com/watch?v=TTlqQU8i6Jk
without shelling out for an equaliser. They are far shriller in the upper mids (compression driver option) if you direct drive run them off an amp, or one of those primitive "4 channel powered mixer" things or just using the simple high/low pass on the back of power amps as a crossover. To be honest SLA pro sound like the best option for you unless you want to expand bigger in the future, and still give you 100dB 1W@1m which is quite economical on power for a speaker that size. Disclaimer is I only have Omnitop 12 so can't comment in person on the SLA pro/compare dispersion patterns etc.

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Bill Fitzmaurice
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Re: SLA pro or omnitop

#5 Post by Bill Fitzmaurice » Wed Oct 14, 2020 6:45 am

Where 'shelling out for an equalizer' is concerned an equalizer isn't an optional piece of kit for PA. It's mandatory.

AcousticScience
Posts: 137
Joined: Tue Jan 20, 2015 4:37 pm

Re: SLA pro or omnitop

#6 Post by AcousticScience » Fri Oct 16, 2020 3:40 am

Yes, but I've seen plenty of cobbled together systems with some ancient powered mixer with limited EQ. Other systems are straight out of a DJ mixer into power amps just using the inbuilt 100Hz crossovers. I've seen a system in a hotel with trap cabs (15+ horn) plugged into a Sony mini system. Now do the Omnitops sound better on "Dance", "Pop", "Classical", "Rock" or "Jazz"? If OP is working with such a system, the SLA pro will sound better, considering he has a high pass. Honestly in comparison I'm spoiled with my driverack PA+. Yes, any PA worth its salt will have a way to shape the sound properly and cross over the signal.

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Bill Fitzmaurice
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Re: SLA pro or omnitop

#7 Post by Bill Fitzmaurice » Fri Oct 16, 2020 6:57 am

My bet is that anyone who cares enough about how they sound that they build their own speakers isn't going to use crap electronics to drive them. My answer to someone who asks "What speakers are best suited to my shitty system" is to go to Walmart.

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