geoff.

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.

I would like to know what filters Klipsch uses on the new models to make them nice again.

There is another forum member that did just what you are thinking about. Can’t remember if he had the LMAHLs, but that’s about as good as the tweeter gets! Not sure where he got the threaded K61s, or whatever the threaded version is labelled. I think it was @jjptkd ?

You sir, own the first production year of the Cornwall 2. The first production year of the Heresy 2 had a round terminal cup too, ‘86 I think (< disclaimer). But please don’t misquote me on this @000...

Thank you! That’s the kind of review you can set your clock to. I recall seeing a thread on here some years ago where JustinSweber thought the Elliptrac to be the winner. I just found it odd that Volti Audio hasn’t gone that route yet, yet uses elliptical tractrix tweeter lenses? Maybe he can knock out the Trachorns cheaper?

@Dave MacKay, one thing I have seen many users comment on in this forum is that the cheaper ones often fall short of expectations. Which stands to reason. From what I have read the Xilica XP-4080 is the end game here. I think it is what is used in the latest Jubilee.

@Curious_George, I stumbled across your thread about using the ZXPC on the PRV driver. It is pretty much a no brainer for anyone starting out new and wanting to wet their beak without breaking the bank. The first thing that went through my head was "it's even cheaper than an EV-DH1 and not only will it fit in a Cornwall cabinet, you won't throw your back out lifting it!"

@Dave MacKay, you are on track with this. Search for Chris A, he is an endless fountain of knowledge.

...the ZXPC 18 x 10? Bring it!

I have K-55s, Faital Pro HF200s and EV-DH1s that I play with on different horns.

Nice. I now have a plan. Thanks, as always!

Money no object, but ONLY these two to chose from. This is not about ease of installation or size, for our purposes lets say it is to be used with a folded horn bass bin, three way. I believe in my heart of hearts the K-402 active IS the end game, but failing that and going passive let’s have it!

@Deang, do you think a swamping resistor would be of any positive value to the A/4500?

@jjptkd, from the majority of comments over the years regarding crossovers the AA always seems to hold it’s own. I honestly thought I would be missing out on the magic if I strayed from the venerable AA crossover. The very same magic is in the A/4500. Just crossed lower to the tweeter, with less parts. Now, what of this swamping resistor mod that seems to garner a lot of positive reviews. Is this something that would improve upon an A/4500?

...like I said, some days are better than others Yes, you did!

None of you reading this at home can see this, but the lightbulb above my head is flickering brighter... A great deal of what I have read on here over the years is starting to gel. Some days are better than others. If I am NOT using K-77s I really don’t need an 18db per octave cross to the tweeter do I? This is why the A/4500 was not designed as an AA/4500?

.

Now, on to the next question... Sometimes I notice the overlap from the bass bin to the squawker, not in a good way. Would this be the fix?

@Dave MacKay, Q Components has the ONE part we need! Assuming you have a pair of tweeters that won’t get fried...

So... if one wanted to simply make an A/4500 out of an AA you could just parallel the two existing 2uf capacitors, add the .5mH coil to the midrange and “cut out” the .245uH coil and Zeners from the tweeter circuit? I feel like I just graduated kindergarden, duh... I paid good money for a pair of A/4500s years ago and I have no use for these AAs until now. And I REALLY like the A/4500s.

Until now, I never really noticed how similar the A and AA crossovers are: