geoff.

Dave, I apologize if my assumption about ESR has lead to your assumption that I have some secret files, lol. I have only what I have managed to absorb on this, and a few other audio forums. I would also like to know “what is the allowable resistance range”. These are great questions that an engineer would be qualified to answer.

...wouldn’t paralleling several capacitors for one value also lower the resistance more than “spec” for the crossover design as intended by the original engineers, good, bad, or otherwise?

Dude, you came to the right place. Get some pictures up on here and you won’t have too much trouble moving those out. I would be disappointed if you haven’t gotten a few PMs already!

Yes, the bass bins are separate. When I first got two widely different measurements I pulled off the dog house doors to see what woofers were actually in there. And they both have K-43 stamped on identical looking magnets.

Yes, I scratched my head and doubled checked both of them in hopes the readings would change, lol They were measured through the access door on the bottom of the bass bins directly across the woofer terminals. And they were both stamped K-43. I double checked that too in hopes it would change. They are on a list of projects to get @ but I could get in there again sooner than later to take pictures. Could extreme abuse change coil impedance before frying it?

@Desert Noises, I was thinking of trying this on an, as yet unbuilt, pair of A/4500s. From what little I think I know about crossovers each component causes a phase shift? Did you need to, or should I, change any of the polarities to the drivers as a result of this?

Ok, that brings up a question about Klipsch woofers that nags me from time to time... Does Klispch make woofers with the same model number with different impedances? I recall seeing discussions over the years but I don’t remember any resolution. This comes to mind because just recently I picked up a mismatched pair of LSI Splits, the one with the AL crossover has a K-43 that reads 3.7 ohms BUT the one with the AA crossover reads 5.7 ohms.

I was looking at these the other day too. The woofers in these are worth more than the asking price. They are the vented, pro version of the K-48, the K-48-KP and would blow your head clean off, LOL!

...it throws the hounds off the scent?

...I really must proof read before I post, thanks again. AK-2 and AK-3, not AL-2 and AL-3. I’m going to edit my post. But what I was wondering is whether the same change in woofer filter values would be of any benefit to the La Scala crossovers?

...then I’m moving to Baton Rouge, lol

...I don’t know if this will show up on anyone’s radar searching the garage sale? Maybe start a new garage sale post for maximum exposure?

@Goldenear67, a little late to the party but what did you wind up using?

YES! Thank you for the correction. Klipsch went from two 68uf in the AK-2 to two 50uf capacitors in the AK-3. From what I gathered in the discussion it would benefit the La Scala as well?

Has anyone figured out a passive correction for this 6db (?) peak at 148hz? ...bet it’s in the latest La Scala crossovers I think I remember a post with ALK and BEC talking about how the AK-3 crossover was changed to use two 100uf capacitors paralleled across the woofer to tame it. Waaaay back. In it ALK said something to the effect that the La Scala crossover would benefit from the change as well.

“Do the next right thing.” ...it looks like that’s what’s happening here

Wow!

...lovin’ it!

Trachorn and Elliptrac are similar horns, with the main difference being price. What warrants one costing 3x more than the other?

Dave, I see you have a door to the left of one of your speakers, but if you can pull them out from the back wall as much as possible and get them in front of your stereo stand the imaging will improve significantly. It will go as deep as the empty space between the speakers. Several forum members had suggested it to me over the years after seeing pictures of my setup, but I never took it to heart until by accident one day I sat down with the music playing after vacuuming behind my La Scalas BEFORE I moved them back and had an epiphany. It is that significant.

Maybe try an apples to apples comparison. Hook the LS to speakers A and the others to speakers B and switch back and forth.

Yes, I should have stipulated that, the intention was always to use a tweeter other than the K-77. The DE-120 is the one I had in mind as it has never failed to impress me in any application I have used it in.

...this is the best laugh I’ve had all day, and it’s been a good day! I hope a forum member finds these before it’s too late. These are a solid entry into the world of La Scalas.

@mopardave, your findings are correct and @TubesGlo is bang on. It’s considered nearfield listening. And the bass seems to just hit right in addition to the imaging. I think it’s called the “golden ratio”, an equilateral triangle with the speakers and your listening position. The walls are also part of the equation. The further your room, or significant other, allows you to put the speakers out into the room, away from the walls, up to a point, the deeper the soundstage will go as well the improvement in imaging. I call it the “air chair” and smile when I see my kids gravitate towards it when their favourite tunes are playing.

@Wirrunna, your experience and perspective is greatly appreciated. And thank you for the link! I believe active is where it’s at, even though I have not gone there yet. And your point about your solution being less expensive than a set of ES crossovers is entirely on point. If I were new to this hobby I would not hesitate to jump head first into the digital solution.