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About jpc2001

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  1. Factory Forte I crossover measurements: Series resistance of the 3.0mH inductor is 3.0ohm The 47uF bipolar electrolytic measures 51uF (not bad, did it take a DeLorean here from 1985?) Series resistance from pin 0 to pin 2 on the autoformer is 0.7 ohm. From pin 0 to pin 5 is 1.1ohm. Crites crossover: 3.0mH inductor: series resistance is 1.6ohm The 47uF bipolar electrolytic measures 54uF. We can't blame B&K sound, they use a 5% part. Is my DMM accurate? Series resistance from pin 0 to pin 2 on the autoformer is 0.5 ohm. From pin 0 to pin 5 is 0.8ohm. Wish I could measure the ESR of the smaller caps, maybe that's where the added "air" of the new crossover comes from. And there is air! You might expect the new crossover, with its lower-parasitic woofer inductor, to tilt the sound toward the bass end. But the most obvious effect is it sounds airier, like there's more treble extension and better definition HF transients. A stock Forte sounds a little "syrupy" next to the modded one, the modded one sounds brighter. But enough subjectivity.
  2. jpc2001

    Boston Belles

    No affiliation. https://boston.craigslist.org/bmw/ele/6252233381.html
  3. Back to topic: how many pairs of adjacent 90 degree corners are there?
  4. Seller confirmed original hardware is not included.
  5. Search doesn't find anything in that thread for Volti, V-Trac, or tractrix. I have too much gear, somebody else please go get these "no-brainers". Hopefully that doesn't refer to the lobotomy of the original components
  6. No affiliation. https://boston.craigslist.org/gbs/ele/6153424858.html The seller doesn't mention the inclusion of the original khorn components. What's the consensus on the Volti mods and tractrix mid horn? Are they an upgrade? Has anyone made measurements of them? I've seen a few subjective reviews. I love the Tractrix horns on my KM-6s (if I may make a subjective review myself.) How do they change the sound of vintage heritage stuff?
  7. In case you don't find a twin for this rare bird: The Khorn is an excellent mono speaker and plenty loud to fill a big room on one amp channel. Mono has a lot going for it, every spot in the room is an equally sweet spot. You could always biamp it if you want to use both sides of a stereo amp It's much easier to find a room that works with one Khorn than two. You just need a single corner, not need for an ideal-sized wall with two adjacent usable corners.
  8. Argh, the link moved again: https://hartford.craigslist.org/ele/6144114715.html This link is likely to remain working: https://hartford.craigslist.org/search/ela?query=horn
  9. The seller started them at $600.
  10. Original link broke, now they're relisted with a price cut @ https://hartford.craigslist.org/ele/6141125723.html
  11. Did you find another amp that works better? Fortes only sound right with certain amps. They must not be the easiest things to drive. I have KG 5.5's, DIY Khorns, Pioneer CS-33A's, B&W DM302's. All 8 ohms nominal and probably in practice too. None of those really care what you drive them with (except for the noise-floor-sensitivity of the Khorns.) Fortes do though, they wake up with the right amp and fall back asleep with the wrong one. My Fortes are stamped as 4 ohms nominal, and while later ones claimed 8 ohms, the innards didn't change IIUC.
  12. Beats not by Dr. K -- https://providence.craigslist.org/ele/6141127520.html No affiliation. Kinda pricey for unfinished Speakerlab K's, but maybe this floats somebody's boat? My guess is that price has a lot of wiggle room.
  13. The Scalas are back up: https://newlondon.craigslist.org/ele/6121844658.html I'm tempted, but I don't really have the right room for them.
  14. No affiliation. Could be KG 5.5 or KM6? Also it's not clear how many they are selling. Descriptions, we've heard of 'em... https://newlondon.craigslist.org/fuo/6122359406.html
  15. I've got fortes, they work much better with some amps than others. They are really four ohms, with lowest impedance‚Äč in the bass octaves. Sent from my ZTE B2017G using Tapatalk
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