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Everything posted by JohnA

  1. The practical lower limit of a La Scala is about 60 Hz. A, D, C, G is an extremely common bass line sequence in music including acoustic genres like folk, jazz and Bluegrass. That A is about 55 Hz, D is 73, C is 65 and G is 49. E (41 Hz) and F (44 Hz, "Angel Of Harlem") are a!so quite common. "Beseme Mucho" has a 37 Hz D in it. Properly calibrated, a subwoofer will only add the low notes a La Scala cannot reproduce and you will not be able to detect its presence. I would not be satisfied without subwoofers and I am not a bass head. If I can hear a sub, it's 10 dB too loud.
  2. Here is a group of max output response curves for the new subwoofers. However, it requires some interpretation. They were run in 1/2 space and at 2 meters (I'm glad I wasn't Jesse that day!). You should add 6 db for a 1m rating to compare to most other speakers and another 3 to 6 dB for indoor use, depending on placement and room size/shape. You can see the small one can cover any common music note, even Ao, 2 steps below the open B on an 5-string bass.
  3. A naming contest is a fine idea, if the company is willing. Remember, the British held a naming contest for an underwater drone and got Boaty McBoatface!
  4. I recommend you wait and not speculate on things that are unknown and haven't even been discussed at Klipsch. They will have to be competitively priced with other top performing subwoofers. The finishes have been discussed, but are not even final. The final design of the XL is still incomplete.
  5. I like them quite a lot! But they are about 20 years old and on borrowed time. VMPS is long gone and Brian Cheney was notoriously secretive, so no one knows what parts he used. I now have a folder on my computer named "Deep Roy"!
  6. I think the Medium is not as large as you think. If I remove the 4 VMPS Larger Sub's, I'll have plenty of room for 2 mediums in my 17' x 18' x 10' den. I don't think anyone posted a pic of it. It is about the same size as a La Scala bass horn, though about 6" wider on each side. Now, if intense refers to $s, we'll have to wait until this summer. Wanna buy a pair of Acurus A250s? 😉 This pic is a little dark, but the Medium subwoofer is about the same height as one of my subs and 5" wider.
  7. A lot of stuff in these old receivers is no longer available, the output chips in particular.
  8. This is a play around sysyem and I think tubes would be more fun. I looked at the Dayton hybrids. They're interesting. The sound source will be a laptop, so there's no justification for $5000, and no desire in that system.
  9. I don't know if I like SoniCaps or not, but I think you'll be fine with those crossovers. Enjoy¡
  10. A subwoofer cannot be "airy". Since these are horn loaded, the effective radiating area is the area of the mouth, not the driver. But, also since they are horn loaded, the sound is clean. They don't have that subwoofer sound. They're musical and sound "effortless". We listened to (special) AL-5s with the larger 2 and the pairing was excellent. Having the entire bass range horn loaded stood out as clean, detailed and easier to separate instrument sounds. If you need to go with the Medium because of size, I'd suggest buying 2 to get the max output up to where I'd want it. The Medium will cover all musical notes and most LFE effects. I'm leaning toward a Large, but 2 Mediums will fit in my room easier.
  11. What is the most likely cause for my '70s SS receiver popping/putting with the volume at zero and no input? It started this over the weekend. It was recapped 4 or 5 years ago.
  12. Do you have a recommendation for a cheap tube integrated to replace my '70s receiver to drive my Heresy IVs? Let's say 10 to 25 watts, 2 inputs and tone controls, price in the few hundred $$. I can pick one at random on Amazon, but I'd rather have a recommendation from someone with experience. My only experience with tubes was a pair of Wave-8s.
  13. I suppose I'm too late. There is no reason to replace any wiring. It never goes bad and is too short to impact the sound. There is no reason to "rebuild" working drivers; leave them alone. The -Ms are good drivers. The diaphragm for K-55-Ms have not been available for years, though one vendor says he can adapt a K-55-V diaphragm. The original tweeter was a K-77-M *if* the K-55-M is original. K-77-Ms were installed beginning in 1980, maybe late 1979. Since you have Z-brackets, the K-55-M should be OEM. Your best choice for a crossover is an AK-3. A K-55-M easily reaches 6000 Hz, so your 4500 Hz crossover point is unnecessary. You should be interested in matching the horizontal dispersion of the squawker and tweeter at the crossover point. I expect Klipsch made an attempt at that. I've never heard that tweeter, but a pair of K-77-Ms will return your Khorns to the original sound and performance.
  14. Until the Heritage subwoofers are ready, you'll want to look for a large, high output subwoofer to keep cone travel to a minimum. That ought to keep distortion down to tolerable levels. Check Klipsch.com, amazon for sales and contact Paducah Home Theater to see if Cory can help you out (I'll bet yes).
  15. No XLRs, but these are prototypes. Ask for XLRs and you might get them in production.
  16. We were given response curves and they are not capable of reaching the bottom of a K-402, much to the disappointment of one or two men. These things were built to be subwoofers, not small Jubilees.
  17. Neither. The internal design is much different and is built for very low frequencies. The Heritage Jubilee is designed to get up to 800 to 1000 Hz. The Jubilee has a larger mouth and longer bass horn.
  18. The medium will be a fine match. It will go down below any common musical note. You might find it is a little limited in max output compared to La Scala's, but 2 will plenty.
  19. I don't think it's critical. Where can you buy such a thing?
  20. I don't know and Coytee wasn't there for a comparison. I know he has one.
  21. The capability of the X-3/X-5 with a field-coil WE-555 treble unit was quite the surprise. We have better, now, but late-40s audio was in fact good. It was good to be a Fairchild! I'd guess from 100 to 6000 Hz, we don't have better, but Mr. Paul worked on the extremes until the Mighty Klipschorn became and it's still with us. I enjoyed it like seeing an old Packard or Ford still on the road!
  22. Roy used a Tool (!!??!! 😱) track in the demo. It was complex, crowded and toolish. All of the subs did a fine job of separating plucks, kicks, thumps and whacks. The system really stood out when the La Scalas slid in as all the bass was horn loaded. They do not sound like subwoofers, none of them. You can almost always tell there is a DR subwoofer in a system by "that sound" what ever it is. These guys have balls!
  23. I had a pair of La Scalas with -M/AL networks for rear channels. My brother has them, now. My fronts came to me mismatched, 1981 -V/AA and 1982 -M/AL. As luck would have it the first squawker I found was a -V and the odd one was reconfigured to 1981 spec. The -M/AL pair had a howling resonance in the lower registers of a French horn and I HATED them. My brother or I converted them the -V/AA, neither of us can remember which. I think the contouring in the Type AL was to blame and the AK/AB/AL was pretty quickly replaced with -2 versions. That pair were 1985-ish vintage and had the later round magnet woofers. The T-S are different from the square magnet woofer, I recommend AL-3s with those because the howl was near the crossover to the K-400 and the AL-3 has similarities, but is simpler than an AL.
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