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Would my 1987 La Scala Industrials sound better if I installed risers like the new AL5’s have?


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9 hours ago, Dave MacKay said:

 

 

Although I didn't brave the weather, just for giggles I put my La Scalas on some dollies that I had laying about. They raised my speakers 5" off the floor (not 3" like the AL5 risers).

 

I didn't do a before/after test with REW and my UMIK-1 so that my observations are based solely on my hearing/perception. And ... I'll be the first to admit that my hearing likely isn't as discriminating as some others on the forum, so that my observations may not be entirely correct.

 

I may have been seduced by the novelty of the change, but I thought the speakers sounded better: I thought that the music sparkled a bit more. But, if there was an improvement in bass, it was pretty modest.

 

@Bubo may have explained why I thought the speakers sounded better.

 

I'll definitely be building risers for my La Scalas (and replacing the gaskets on the bass bins). Until then I'm going to leave them on the dollies.

 

 

As long as the risers are closed, they should do no harm to the sound.  

 

But if you think the HF section on your Scalas is too low, maybe you should get a nice reclining armchair or love seat, and get yourself down to squawker level.  

 

I don't like reclining sofas, because the middle seat doesn't recline, due to the lack of a place to put the control lever.  However, there are some love seats that are just as wide as a sofa, and have two extra-wide cushions, instead of three regular-width ones.  Then you have full-width recline action (reclination?), which makes for a pleasantly large near-horizontal viewing area.  Some of the powered sofa-width love seats even have a separately-operated headrest section, which you can raise up so you don't fall asleep.

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7 hours ago, Islander said:

 

But if you think the HF section on your Scalas is too low,

maybe you should get a nice reclining armchair or love seat,

and get yourself down to squawker level.  

 

I use to do this with blondes, brunets and redheads.

Now they call me Sir, and my speakers are up on 4" casters

Ahhhhhhh .... the old days of music listening .........

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If you have the means to make a riser.....you might have some wood clamps.

 

If so, then as an experiment, take the wood clamp and put it on the mouth of the woofer horn and snug it down.  What you are attempting to do is FREEZE any vibrations of the huge side panels.  If you can do this, you might THINK that you've just got done adding an octave of bass to the speaker......you haven't.  That sound is already there but it gets masked by the side walls resonating.

 

If you like the (likely improved) sound with the clamp, you can figure out some of the other ways to tighten up the sides.  If you don't like or notice any improvement, take the clamps off and return them to their proper storage location.  

 

If you don't have large enough clamps, run to local home improvement store, buy a pair of clamps that will be long/wide enough to do each speaker....  give it a whirl.  Keep receipt and return when experiment is over.

 

 

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Oops, just realized you have the trim and fiberglass.

 

Doubt the above comment would help you much.  (my pictures load slow so I just read & move on.....I then saw the picture)

 

 

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Coytee, many people think the improved bass response of the La Scala II is because the 1" thick MDF sidewalls don't flex, but there's more to it than that.  The bass horn on the LS2 is around an inch longer, as can be seen by the front edge of the Vee of the doghouse being around an inch back from the mouth of the horn.  The cabinet is 25" deep, rather than the 24" of the OG La Scala.  That alone would improve the bass response a bit.

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Just going on my conversation(s) with Mr. Hunter.  He's the one who said that (trying to paraphrase him after 10'ish years)  

 

"The same bass information is in both speakers but it just gets masked by the sides of the cabinet resonating....  once you get rid of that resonating, they sound (essentially) the same"

 

I probably only butchered 93.5903% of his comment but that's the gist of it.

 

Adding fiberglass and metal trim would probably help break up some (most?) of those resonant frequencies.  Then, as I believe you know, if someone went with an active crossover, there's a PEQ where Roy has removed the peak at a certain frequency (something like 150 hz?)

 

 

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17 hours ago, Islander said:

Coytee, many people think the improved bass response of the La Scala II is because the 1" thick MDF sidewalls don't flex, but there's more to it than that.  The bass horn on the LS2 is around an inch longer, as can be seen by the front edge of the Vee of the doghouse being around an inch back from the mouth of the horn.  The cabinet is 25" deep, rather than the 24" of the OG La Scala.  That alone would improve the bass response a bit.

Interesting , here are the 3  datasheets -LS is 24,5 inches deep , LS II is 25.25 inches deep - the AL-5 Is even deeper -  25 5/16  inches -

https://d2um2qdswy1tb0.cloudfront.net/files/Heresy-II-La-Scala-Belle-Klipsch-brochure-and-specs.pdf

 

http://assets.klipsch.com/product-specsheets/La-Scala-II-Spec-Sheet-v03.pdf

https://d2um2qdswy1tb0.cloudfront.net/product-specsheets/La-Scala-2018-Spec-Sheet-v01.pdf

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I just assumed the difference in dimensions was mostly about the thicker panels but I can say that stiffening the sides of my 1976 versions made a big difference.  Still haven't veneered the cabinets but might stick with the original black.  Been on the fence for quite a few years now.

 

I tried quite a few variations of heights to raise them up but no amount sounded as good as flat on the floor (room is wall to wall carpet). 

I use DSP to trim off 7dB at 148Hz Q 8.0 which cleans the sound up a lot.

Also played with knocking off 4 dB at 180Hz Q 12.0

These numbers came from some conversation here about the LaScala bins but I don't remember the original source.  My ears had me at 150Hz knocked down 4dB so I was pretty close. 

 

 

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On 2/2/2022 at 3:04 PM, muel said:

I just assumed the difference in dimensions was mostly about the thicker panels but I can say that stiffening the sides of my 1976 versions made a big difference.  Still haven't veneered the cabinets but might stick with the original black.  Been on the fence for quite a few years now.

 

I tried quite a few variations of heights to raise them up but no amount sounded as good as flat on the floor (room is wall to wall carpet). 

I use DSP to trim off 7dB at 148Hz Q 8.0 which cleans the sound up a lot.

Also played with knocking off 4 dB at 180Hz Q 12.0

These numbers came from some conversation here about the LaScala bins but I don't remember the original source.  My ears had me at 150Hz knocked down 4dB so I was pretty close. 

 

 

Would you happen to have the link to that particular conversation about the bins? 

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