LS-Inspired 3-Way Passive Radiating Bass Reflex Horn

One consideration I’m having as I move forward with these regards the issue of relative portability. My space is limited, so they’ll have to be pushed up against the wall when not in use, then slid out and toed-in for listening. Dragging the bottoms of the speakers across my hardwood floors isn’t an option. What that in mind, what are the best options, casters, slider feet or spikes & metal pads? I’m currently using spikes with the Franken-Fortes and it seems to improve bass response, but occasionally, when moving them, the pads come loose and the spikes dig into the floor; they’re a pain to replace and the Scala’s will quite a bit heavier. What are the downsides to slider feet or casters? I’m completely ruling out dollies, it looks cobbled toggle and unfinished.
 
Raising mine off the floor with casters helped the bass response in my particular room quite a bit (YMMV). I don't have a reference in my new house, but the casters do provide great mobility when cleaning or just needing to move them for whatever reason.

I used the big blue polyurethane ones from Harbor Freight.
 
Casters it is! I saw some recently that had clear rollerblade type wheels that looked pretty sharp. It’s funny, I searched the topic over at the community and the majority of responses were either “PWK’s 8 principles…” :no: or “I would never drill into the bottom of my LaScalas” but few seemed to have any definitive information
 
Casters it is! I saw some recently that had clear rollerblade type wheels that looked pretty sharp. It’s funny, I searched the topic over at the community and the majority of responses were either “PWK’s 8 principles…” :no: or “I would never drill into the bottom of my LaScalas” but few seemed to have any definitive information
Casters DEFINITIVE Casters Sorry for not being fast enough. Should we be spending out full time on this site so we can respond faster to your further concerns?? On a horn, the Horn Portion is not affected by casters like a resonant box is, so raising them 3 inches gives more Tweeter Benefit vs. Bass Penalty. Just do it.
 
I bought 8 3" 4 swivel, 4 flat for my Edgarhorn Titan II's. I don't mind screwing in 4 big screws for them. Mine are light in the front and heavy in the rear, so they will not be symmetrical.

Also, you may want to cut a square or rectangular "skirt" on the bottom of LaScalas to hide them aesthetically, like maybe a 21 x 21 external dimensions like a frame.
First image is exactly how I ought them from a guy 21 minutes away.
The little photo is how I mounted the drivers.
The third photo (not mine) with the Seismic Sub is how I want the casters, except the front ones set back at least 1/3 in since the weight of the JBL 2220 is way in the rear, making it offset weight wise. also add a rectangular Skirt to cover the wheels, leaving maybe 1/4 to 1/2 inch exposed so it can still roll.

Glad to see Gigantic is doing so well on this.


3257686-544ef8ab-edgarhorn-edgar-titan-ll-2-seismic-jbl-2441-350hz-mid-mid-bass-horn.jpgClaudeEdgarHornTitanII_raw_no sub.jpegTitan2withSeismicSub.jpeg
 
Last edited:
These Titan II horns with Refrigerator sized Sub, sound fantastic. However they are at the other end of the WAF Spectrum for "Fugliness."
LaScalas, are beautiful in their simplicity and were improved by PWK, when he created the Belle Klipsch, which was the best looking horn speaker ever built. Belle, in French means Beautiful, which was the name of his first wife, who died from smoking. He quit and she didn't (as told to me by PWK).

After owning many pairs of them, starting at 23 years old, before my first kid was born, the LaScala, in it's current form from the factory, ended up being a true competitor for the no longer produced Belle in the looks department. Here's the EVOLUTION for Inspiration. The Museum Original from 1963, now Celebrating it's 60th Anniversary and why didn't Klipsch Celebrate that, which has outsold the Klipschorn, I'll never know.
Original_LaScala1963.jpgTWEB-LAScala-1.jpg
 
A little more progress today, I have all of the cabinets made and almost everything is primed. I’ll have a little more prep, then I’ll start applying the enamel and build my router jigs . After a couple coats, I’ll route for the horns, assemble the bins, install mahogany trim, stain and clear coat everything. After that, it will be assembly and time to rock the house.
IMG_5761.jpeg

These are going to be really big. With the PRV 18 x 10 and L-MAHLs, the horn enclosure is 18” tall. With casters, they will be about 4 feet tall. I may be pushing the WAF.
 
I know you’ve already got the upper box made, and it’s probably figured into the volume for the port mod.
But, parking the Tweeter horn on it’s own small baffle can really help to tame the appearance of adding a couple of mini fridges to your living room.2C9FBA4A-0602-4449-BE66-6C462264F5AD.jpeg
 
I know you’ve already got the upper box made, and it’s probably figured into the volume for the port mod.
But, parking the Tweeter horn on it’s own small baffle can really help to tame the appearance of adding a couple of mini fridges to your living room.View attachment 2970462
I have my Frankenstein Heresy-Jube-Fortes set up like that, the L-MAHL sits flat without a baffle. Ultimately, I'd like to avoid the clutter and A, I have everything modeled and simulated for the current size and B: I have something else going on that I'll reveal later that dictates that size as well. putting the Tweeter on top will only make it 3-1/3 inches shorter- I suppose I could get it even lower, but that might throw off the proportions of the reveal around the horn. at any rate, they're big. We'll have to learn to live with it and hopefully, it will be worthwhile. :biggrin:
 
at any rate, they're big. We'll have to learn to live with it and hopefully, it will be worthwhile.
Seems to me you are fast approaching that 60" I suggested for your Super Choruses, which would have yielded great bass with twin woofers and a much smaller footprint. However, nothing beats the DETAIL of horn midbass (which is all a LaScala is), more important than low bass, which is rolled off in Most recordings anyhow. Either way, I applaud your commitment to building better sound for you enjoyment, which is why we are all here sharing. Cheers. :beerchug:
 
Back
Top Bottom