Jump to content

geoff.

Regulars
  • Posts

    1831
  • Joined

  • Last visited

Everything posted by geoff.

  1. ...my OCD wouldn’t allow me to do that. A dust cap, no problem, but coils and cones are OEM or bust, lol.
  2. Risers good, legs bad? Excellent post Dave, at 6’5” I’m looking forward to the discussion. If I had to guess, a solid base would be where I would put my buck-o-five.
  3. Thanks again Dean! The pictures of the VTK-400 on the website show the Litz going to tap “0”, and then to ground. That threw me. I originally “assumed” the Litz was a bandpass for the squawker, not for a second order tweeter filter. But once I got down to the autoformer wiring I couldn’t make sense of it. I am now going to make another assumption that the BMS mid Greg sells for this crossover must not need a bandpass? It tapers out around 6k?
  4. Mayday, mayday, mayday! Finally got all the parts for a Super AA / VTK-400 and put them on some repurposed boards using the 3636 autoformer. But referring to the Volti website and comparing it to the schematic I am at a loss. There are 28 possible levels of attenuation for the VTK-400! Here I was thinking 12 would be more than adequate. Is there a schematic, or wiring diagram for the 3636 in this application? I could throw a T2A back in here but my heart was kinda set on the 3636.
  5. geoff.

    crypto currency

    An adage that applies to dating may apply here as well: ”Never let an old flame burn you twice.” ...unless you’re into the sunk cost fallacy, lol
  6. geoff.

    crypto currency

    ...how much gold was just “discovered” in Uganda? that has to have some impact in the price, sooner or later bet there are oceans of oil in Africa too that are undisclosed, I mean undiscovered
  7. ideally, another Heresy would make for the best centre channel, an all Heresy surround setup would impress people you don’t even want to impress, lol
  8. Did a little more googling, ...you may want to take your ad in US Audio Mart down, lol I think you will find them an upgrade.
  9. I just did a google for ALK AP12-500 and it looks like you are good to go. The crossovers were designed for Klipsch speakers and Crites woofers are spec’d to the same values needed. One bonus about the AP12-500 is that the midrange level is easily adjustable because the autoformer has a swamping resistor. This also allows you to use a squawker with a different impedance down the road, if you choose. The ES5800 is good for what you have as well. Your new networks are indeed compatible. Congratulations on your score!
  10. If I may quote Bugs Bunny “Why did they have to put the south so far south?”
  11. ...this forum can be a form of masochism, lol
  12. ...until now I didn’t even know a 3619/3619-ET even existed. Just returned from a google search which led, of course, to this forum and a thread from you Dean in 2013 which contained Mike’s first post. Small world. All I knew about prior to this thread was the 3636 and the Crites version of the T2A.
  13. I see (now) the floating ground in the VTK-400, which are as yet unbuilt. And thank you Dean for bringing that to my attention. But I do not see a floating ground in the ALK Universal schematic. Do the Universals have a floating ground for the midrange? The ones I built use one wire to connect all the negative terminals on the barrier strip. Or are the only wires crossed in this thread, lol? I apologize for any confusion, I mentioned the other crossovers for reference. I am looking for as much presence as I can get from the STOCK K-77s in my LSI Splits.
  14. Please forgive me if I am not following you here, ALK Universals have a floating ground?
  15. Gentlemen, thank you for your responses! This is everything I was hoping to find out, and more, as usual. I have not built the VTK-400/modified Super AA yet. My (limited)experience so far has been with an ALK Universal clone. Regarding the ALK Universal, I definitely did NOT float the ground, and I am currently using a T4A autoformer in them so I can throw the T2As into other trial boards as the -6db setting was too recessed anyway. Whichever I settle on will get a pair of 3636s patiently waiting on the shelf.
  16. Thanks Dean, and yes, I think they (the ALK Universal clones) are built right. I did find the “suggested” -6db attenuation too uncharacteristically recessed for La Scalas, so mine are at -4db. In another thread recently I remarked at how impressed I was with the impact the (ALK Universals) had on the sound of the K-77. But even at that I prefer the treble turned to 11, lol, even as a teenager I would boost the treble. In the past month I have gone a week with each of the following crossovers, in this order; ALK, AA, and lastly A. All with refreshed capacitors. Even tried an idea from Bob Crites, an A set using a 6.8uF capacitor and tap 3, from a post decades ago before turning it back into an original A style. Listening to a pair of Klipsch type A’s right now and they are everything I like about La Scalas RIGHT up to about 80db. And that schematic above is the Super AA, after a little “white-out”. I’m guessing Greg uses both a 1.5 and 2.5 mH coil that allows the user to select what total value works for them. I left out the 2.2R and 22R resistor L-pad across the tweeter for -3db as I can’t see myself needing that. I even boost the treble using A/4500s and SMAHLs. Down the road I may want to try this crossover (the VTK-400) with other midrange drivers, that’s why I made the second inductor .30mH. Do you see any issues with that?
  17. I tried some ALK Universal clones, but I still can’t get enough cowbell, lol. Is this the VTK-400 schematic, simplified? ...and thanks, as always, for the input
  18. ...not trying to open any old wounds, and it seems this one ended civilly with a wealth of knowledge being shared, but this thread is a very good read for anyone else just trekking along at their own pace and getting to the L-pad phase
  19. If I understand this correctly, which is usually a stretch, lol... The Chorus 2s have titanium diaphragms, but the Cornwall 2s still have the phenolic diaphragms?
  20. @Escoffee et al. I would suggest some double sided tape between the caps and the mounts. @Dave A and @Crankysoldermeister got me thinking about this in a couple of their threads. It eliminates the the waistbanding and indentations associated with this technique. Another benefit of the tape is the zipties don’t need to be as tight. You’ll need to have the ziptie eyelet pretty much where it’s final resting place is before dropping the tape on as it will stick it too. I had spares but your kit is probably specific. And if I haven’t mentioned it yet, leave the leads as long as they come to keep as much of the heat from the soldering iron from smoking the guts of those JEMs (see what I did there?). I think most recommend a 40 watt iron? Looking forward to hearing your impressions, at your convenience. The only thing I get when I’m in a hurry is frustrated.
  21. Every time I have sold a pair of LaScalas (three times) the majority of prospective buyers echo this sentiment. I kept a pair of LSI Splits that my kids will inherit, if they don’t ask me for them sooner. But the the one Klipsch speaker that always impressed me standing in for the LaScalas in the interim was a pair of Tangent 5000s. Two feet out into the room they were tight and full. If I could only keep one pair as the best example of what Klipsch brings it would have to be the KP-301s. I hope it never comes to that, lol.
  22. geoff.

    Sold.

    ...oh, you need them. Time is just a construct.
  23. If the price given above is correct for the Heresy upgrade kit I second that as a consideration. In for a penny, in for a pound.
×
×
  • Create New...