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Author Topic: loudest box?  (Read 18637 times)

Ivan Beaver

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Re: loudest box?
« Reply #20 on: January 03, 2015, 09:23:15 PM »

I'm sure the SM80 is a great speaker, and I love the design concept ... but ... its 65lbs and much bigger than your typical 12 and horn, even larger than many 15's.

I'm not sure if Heip has defined his criteria that well ... what's the application, is it for mid/ high or full range applications, does the bass response matter etc. Why limit the criteria to 12" speakers?
The reason the SM80 is the size that that it is, is to be able to have pattern control (you know-putting the sound and keeping it) where you want.

Almost the whole front of the cabinet is the horn.

With smaller horns you can't do that-no matter how much the marketing guys want you to believe that you can have pattern control with a small horn.

There is no way around it.  It is just one of the performance criteria-and it matters to some people more than others.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

Peter Morris

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Re: loudest box?
« Reply #21 on: January 03, 2015, 09:43:54 PM »

The reason the SM80 is the size that that it is, is to be able to have pattern control (you know-putting the sound and keeping it) where you want.

Almost the whole front of the cabinet is the horn.

With smaller horns you can't do that-no matter how much the marketing guys want you to believe that you can have pattern control with a small horn.

There is no way around it.  It is just one of the performance criteria-and it matters to some people more than others.

As good as the SM80 is, the 80 degree conical pattern for many of my applications is not what I prefer, nor does it meet the OP original spec.

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Robert Lawton Jr.

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loudest box?
« Reply #22 on: January 03, 2015, 09:45:00 PM »

gets my vote too

(but now waiting for the onslaught of questions for the OP......)

+1 Rob

I had the pleasure of DJing on Bob's system at the Rocky Run 5k in Philadelphia.

They are loud and clear.


Sent from my iPhone using Tapatalk
« Last Edit: January 03, 2015, 09:47:34 PM by Robert Lawton Jr. »
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Tim McCulloch

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Re: loudest box?
« Reply #23 on: January 03, 2015, 10:22:28 PM »

Yeah-I forgot the "icepick in the forehead" part.

It's been a little while since I listened to it.

Maybe some good work music on Monday :)

Yes my office is the one with the "weird stuff" coming out of it.

You never know WHAT you will hear.  It could be Frank Sinatra followed by Dread Zepplin and then the Partridge family-ya never know---------------

I was with you up until the Partridge Family...
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"If you're passing on your way, from Palm Springs to L.A., Give a wave to good ol' Dave, Say hello to progress and goodbye to the Moonlight Motor Inn." - Steve Spurgin, Moonlight Motor Inn

Ivan Beaver

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Re: loudest box?
« Reply #24 on: January 03, 2015, 10:26:33 PM »

As good as the SM80 is, the 80 degree conical pattern for many of my applications is not what I prefer, nor does it meet the OP original spec.

The OP listed a number of different coverage angles-so which one is REALLY needed?

And as with MOST horns- the narrower pattern is in the vertical domain-which is the smaller physical size-so the horns produce HUGE pattern flip so that the pattern is COMPLETELY OPPOSITE what the spec say.  But most people don't care about the FACTS.

And at what freq do the horns in the original spec ACTUALLY provide coverage????????????

Not anywhere near what most people think (due to the small size)

But as long as you "believe", then products can do all sorts things, that data won't support.

But don't tell the marketing departments--------
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

Ivan Beaver

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Re: loudest box?
« Reply #25 on: January 03, 2015, 10:28:12 PM »

I was with you up until the Partridge Family...
I used to watch it all the time to look at the gear and see what they were using. 

NOT the reason others were watching.

But Laurie was cute.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

Frederik Rosenkjær

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Re: loudest box?
« Reply #26 on: January 04, 2015, 02:27:22 AM »

I'm sure the SM80 is a great speaker, and I love the design concept ... but ... its 65lbs and much bigger than your typical 12 and horn, even larger than many 15's.

The front of the cab is quite large, yes. But the cabinet is very shallow so all in all it's really not that big.
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chuck clark

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Re: loudest box?
« Reply #27 on: January 04, 2015, 04:01:06 AM »

Does any manufacture make a 2" exit driver + 12" in the same category?



A: Yes.
Jbl 812/712 sound great, get loud. can be used as monitors / or mains w/ subs

Also SM 80 lovers should audition Community SLS 920's.  Unsurpassed vocal clarity. Very loud. Coherent wavefront without digital processor. Liquid cooled for minimal power compression. Efficient. Sound fantastic. Worthy alternative to SM 80.
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Peter Morris

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Re: loudest box?
« Reply #28 on: January 04, 2015, 04:36:06 AM »

The front of the cab is quite large, yes. But the cabinet is very shallow so all in all it's really not that big.

Yes I know ... and its good for the truck pack  ;).

As a comparison the OP mentioned the EX QRx112; its 26.6" x 15.4" x 14.6" compared to the SM80 which is 25.5" x 24" x 12.75". The QRx112's bigger brother, the QRx115 is 29.9" x 17.7" x 16"

From the audience/venue/sight lines/ lighting perspective - issues relating to the size of a speaker box most are most commonly associated with the frontal area of the box.  In this case the SM80 is slightly larger than the QRx 115.... just as I noted in the original post  :D

I don't have an issue with the size of the SM80 .... its one of the things that happens when you horn load things to low frequencies, but the OP may have been expecting a smaller box(?).

I want maximum SPL for a given weight and size.... don't really care what drivers it uses - hence my original post and suggestions.  Also +1 for the SLS920


Here are some suggestions with the manufactures rated max SPL that may be of interest.

Standard 12” and horn less than 60 lbs
http://www.jblpro.com/ProductAttachments/JBL_VTX_F12.v9.pdf  132dB  LF / 137dB HF peak
http://www.codaaudio.com/products/tops/g700-series/g712-96/g712-96-specification/  - 134 peak
http://www.adamsonsystems.com/index.php/component/sobipro/?pid=65&sid=78:m12&Itemid=0  -136.9 peak
http://www.kling-freitag.biz/268.0.html?&L=1 - 134 dB max
http://www.electrovoice.com/product.php?id=190 - 131 dB peak
http://eaw.com/docs/2_Legacy_Products/Loudspeakers/JF/JF290z/JF290z_polar.pdf 130dB peak

Powered 12" and Horn - 134 dB max
http://www.rcf.it/en_US/products/touring-and-theatre/tt2-a (more than 60 lbs.)

Horn Loaded 12” and horn – 140dB peak
http://www.dbaudio.com/en/systems/details/c4-top-loudspeaker.html#ssch-db-systems-product-data-8 (much more than 60 lbs.)

Dual 8” horn loaded + Mid and HF horn - 137 dB peak
http://www.communitypro.com/files/literature/spec%20sheets/SLS920_SPEC.pdf?phpMyAdmin=c9cc5b3953d87385dc22218d669e7aab

12" and Horn
http://www.l-acoustics.com/admin/product_files/ARCSWIFO_SPS_EN_3.0.pdf - 135 dB peak (more than 60 lbs.)
 
Horn loaded coaxial 12” (similar to SM80) 132 dB average
http://www.clairbrothers.com/SpecSheets/12CX_CP_60_web.pdf  (more than 60 lbs.)

Danley SM 80
http://www.danleysoundlabs.com/danley/wp-content/uploads/2012/08/SM80-spec-sheet3.pdf 134 peak (slightly more than 60 lbs.)

Dual 10’ + coaxial horn (less than 60 lbs.)
http://eaw.com/portfolio_page/kf394/ - 134 peak
http://jtrspeakers.com/portable/noesis-3tx/ - 136 peak
« Last Edit: January 04, 2015, 08:58:57 AM by Peter Morris »
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Tim Padrick

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Re: loudest box?
« Reply #29 on: January 04, 2015, 05:48:31 AM »

Yes I actually still have VINYL versions of The Archies. Partridge Family (of course lots of Zappa) and lots of other classic ALBUMS.

I'm not sure what to do with them-ideas?

Buy a good record player?  (Linn, Rega, or ?)
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ProSoundWeb Community

Re: loudest box?
« Reply #29 on: January 04, 2015, 05:48:31 AM »


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