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Driver upgrades for La Scala's


J.4knee

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Does anyone know who manufactures the K 77 F tweeter driver Klipsch now uses in their Khorns, Belles and La Scalas? Or who manufactures a suitable substitute. Ive read where new High Freq drivers were available for older heritage series speakers and I was just wondering if anyone out there had some suggestions. I plan on getting a set of ALK Series A crossovers for my La Scalas from Al and am interested in upgrading the Hi freq driver to something a little less colored

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Wait until you get your ALKs and get them attenuated right and broken in before you do any wholesale changes. The ALK network has a sharper cut off slope at the lower end of the tweeter freq's which cleans up the tweeter quite a bit. It also has a low pass for the squaker which reduces the overlap between the drivers. Just MHO.

Rick

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Call Klipsch and buy a set of "Z" brackets that mount the tweeters flush with the front of the cabinet. They help a lot! You will have to enlarge the tweeter hole to use them. They are now installed at the factory on La Scalas as well as the Belle and K-horn.

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On 2/12/2004 12:49:33 PM John Albright wrote:

Call Klipsch and buy a set of "Z" brackets that mount the tweeters flush with the front of the cabinet. They help a lot! You will have to enlarge the tweeter hole to use them. They are now installed at the factory on La Scalas as well as the Belle and K-horn.

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Would you not have to remove / replace or reinstall the speaker cloth to inlarge the tweeter hole ? ( on a k-horn or belle )

Is this mod audible to the point of being noticable ?

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Thanks for the tips guys. I will wait until I get the ALK's first. I am planning on refinishing them and I wanted to do everything in 1 fell swoop. But I think I will refinish them and install the ALK's when I get them and evaluate further from there.

R/Jim

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I took the tweeters out of my khorns and mounted them vertically on a block on top which when combined with Al's ALK crossovers made a noticable difference (clearer, more open, less harsh). This was further improved by using a tube amp and external DAC processing for CDs and room accoustical treatments. Very satisfing when you find the right combination but it took a lot of experimentation and info from this site.

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On 2/12/2004 10:58:12 PM John Albright wrote:

Would you not have to remove / replace or reinstall the speaker cloth to inlarge the tweeter hole ? ( on a k-horn or belle )

Is this mod audible to the point of being noticable ?

Yes and Yes.
1.gif

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Hello Everyone1.gif I've been visiting the forum since December

and greatly enjoy it. First time I have posted so I hope it turns

out right.

I bought a pair of (79)KHorns in 1990 and decided to use the

"Z" bracket mount for the tweeter. I was able to increase the Tweeter mounting hole without removing the grille cloth by

removing the Tweeter/Squaker mounting board. I made two protective plates by using masking tape over some aluminum flashing and then sliding these between the grille cloth and baffle board to protect the cloth. I then made a picture frame style guide and centered and clamped it to the baffle board so that my hand router could cut out the correct size hole. I made several small passes till the hole was enlarged all the way through.

I feel this modification adds clarity and smoothness in the tweeter's freq. range and was well worth the effort to me!!!

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"Gezzzz JOHN !!! Your short answers scare the crap out of me ."

LOL!!

A lot of that depends on how much my wife is complaining about my normal explanations. She says I can't give you the time without teaching you how to build a clock.

"Hi. My name is John and I'm an engineer."

"Hi, John."

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