AHall
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Posts posted by AHall
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It’s not gonna happen. They are on here anyway and know about the last k510 deal slipping through the cracks. It’ll be the last time a pair of k510s makes it out of the warehouse I have a feeling. You’ll eventually just get the call that they do not support the diy community with parts.
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There was a lot of info to absorb in this old thread. I sure would love to find a tube preamp that would compliment my jubilee setup for a reasonable price.
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29 minutes ago, Chris A said:
In general, your loudspeakers should be aimed at the main listening position(s) (MLPs). In your case--the angular difference between wall alignment and aimed-at-the-listener is so small, this isn't an issue with loudspeakers having vertical or coaxial alignment of their drivers.
For loudspeakers not having vertical driver alignment (like with HT center-channel loudspeakers with their side-by-side arrangements), this is an issue, and you need to have very careful alignment to the MLP. But fortunately most setups using these compromised loudspeaker designs usually have the center channel aimed directly at the centroid of the MLPs.
Having the surrounds forward of your MLP actually helps in their surround performance--as shown in the figures above from Toole's book. (By the way, if you don't own a copy of Toole's book, now is a good time to think about acquiring one since much of what we're talking about in this thread is explained in even more detail in his book. I recommend any of his book's editions, but the third edition seems a little better organized than the first two editions.)
Chris
Well that would be wonderful if I accidentally made a more ideal listening placement for them. As you can see moving them isn’t really an option at this point. And if I could move the couch back a touch without damaging the sound reproduction quality that would even be a plus. I guess I should move it back some and tilt the surrounds toward the listening position and see how it sounds.
Also I ordered the book so I can follow along better and ask less dumb questions over time.
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With my surrounds being 1ft forward of my ears and 6ft from either side should the speaker be tilted rearward toward the listening position or 90* to the room? According to the diagram it looks like they should pointed towards you. I didn’t know if off axis or dispersion pattern adds complexity to this or not. It would be good to hear their current placement could actually be a good thing. I’d have had them back further if the shape of the room didn’t dictate their position. And I’d much rather my couch was another foot or so back to be further from the jubes, but leave it where it is due to the placement of the surrounds.
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This is a very interesting topic to me. Could you elaborate more on the placement of the surround channels. Do to my room shape my cornwalls are in front of my ear a bit. I feel that was a bad thing for movies. After adding forte2’s to the system as surround backs I feel much more immersive and well rounded sound. I haven’t mess with any multichannel recorded material because I feel like all the speakers in the room that aren’t Jubilees just muddy up the sweet sound.
Id like to talk more about timbre matched HF sections. Obviously everything I have in the room is inferior to the k402. I have dreams converting my cornwalls to 2 way using k510s ideally. But due to their availability that is unlikely to happen. I might have to seek out a cheaper solution. For sure I will have a k510/belle as a center channel as it meets my size requirements.
I believe I need potentially a lot more acoustic damping for my 2ch. How would multi channel differ? At what point do I regret that I didn’t just build a padded room from the start?
Id also like to discuss having some channels with ultra low distortion horn bass bins (jubes) vs direct radiating bass (cornwalls).
And lastly one thing I feel that has been missing from my setup is ultra low freq. I know it’s intermodulation blasphemy, but I’d like to add a couple SI 24” drivers to a sealed cabinet in the back of the room. My plan was to only have them on for movies to capture more authoritative LFE, but now with this discussion we might as well talk about multichannel hifi.
Currently i enjoy 2.1 listening the best because I feel the heresy, cornwalls, fortes, and potential direct radiating subs only degrade my awesome low distortion stereo system. Of course I’d have 7 jubes in there if money and space allowed, but I’m short on both.
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I wish I had more pro speakers and could see how khorns sound compared to 396s. I’d guess the 396s have a better top end and the khorns have cleaner bass. And much lower bass.
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Belle/510 with a sub if you have the room.
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What’s the latest on this?
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I’ll buy those horns if you wanna sell em.
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Lucky dog. They have any more in stock?
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Have you noticed the max volume doesn’t seem loud enough? I feel like I have to be all the way up most of the time. Zero overhead.
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6 minutes ago, Coytee said:
Nice! I saw the "treatments" on the wall....looked at the next picture and it turns out one of the treatments is a Cornwall!! Nice (it slipped right past me at first)
Do you really find that Heresy workable in the middle?
Really??
I once had an Academy between two LaScalas and found it laughable (I realize the Academy 'ain't no' Heresy) Still I ended up selling all three of them (three Academy's) because I found them next to useless when working next to the LaScalas.
It actually works very well as a center and keeps up surprisingly well for what it is up against. It’s not a 100% seem-less transition for movies, but 99% of people would mostly likely consider it good enough. I will still be building a mini jube for the center. K510 with matching radian driver, with a belle-ish bass bin. Unless a 402 falls in my lap. In which case I’d probably do up a MEH.
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The system sounded so good with factory components I was hesitant to change anything. But I trust that the experiences I’ve read on here of members that have changed the HF compression driver for a higher quality unit to be true.
I had my heart set on TAD 4002, but they are unobtainium. And when you do find them, they are grossly expensive even used. I weighed my options and did as much research on the topic I could bare. The next best candidate for the money seemed like Faitalpro 20at. They are discontinued though. While you can get them, they are very rare. Even though people have gave testimony how great they are I figured I would try Radian 950pb’s. I liked the idea that I could upgrade the diaphragms in the future to beryllium when money allows. There is so little info on how drivers perform. And so many variants in room and system that you really have to take everything with a grain of salt. I was told by a dealer the Radian was slightly better in his opinion and his staffs opinion than the 20at. Being that they were similar priced I closed my eyes and hoped for the best.
I know I would be happy with either and that I will never know what the other sounds like. But this time next year it won’t matter which driver was better after I get the new diaphragms
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I guess I am due for a room update though. I’m slowly learning this complicated(for a newby like me) system. I’ve got more acoustic treatment finished up. I’ll probably stop here til I get a custom skylight cover and clouds. It’ll be nice to get to know the system better and learn to know their sound. At this point the sound is new enough and changes take place often enough that it’s hard to tell the changes that I make at times.
Cornwalls are inset and trim is in the process. I’m mostly done and when I am I’ll post an update. In my mind it has made a nice improvement in aesthetics.
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15 minutes ago, Khornukopia said:
How do your new compression drivers sound?
They sound amazing. They already sounded great. I’m enjoying the extra detail that they bring. It was costly, but I’m in this deep already so what the hell. I’ll really be excited when I upgrade the diaphragms to beryllium. I don’t like to be left wondering what else there is left on the table.
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After doing a little looking around I believe they are the de75. Just comparing pictures back and forth. It looks to me the de750 has a chrome ring just before the magnet. Both the de75 and k691 are black in the area. I was under the impression the k69 was a de75 and the k691 was a de750. The k69 clearly is a different manufacturer. That agrees what I read earlier about them being PAudio drivers.
I will say this. The radians I just installed are better than the k691s. But slightly smoother and a little better highs. As in bells and symbals are more sharp and precise like glass breaking. The k691 was a little more rolled off sounding. It’s funny that I swore the music couldn’t be improved any better than i was hearing with them. The k691s really do sound that good. Completely unnecessary that I upgraded them. I’d say they are 5-10% at most over the k691. And they were almost $1000. So take that unbiased mini review for what it is. It’s really splitting hairs at this level in my opinion.
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1 hour ago, Emile said:
Great; thanks a lot. But ... have heard some negative comments on this driver. Have not been able to find a frequency chart
Anyone?
Thanks, Emile
What negativity did you hear? I don’t think Roy would have chose it if there was an issue. It’s just a b&c de750. No one has confirmed the hardening of the factory diaphragms that I’m aware of, but I know klipsch buys lots of them and rejects several if they aren’t up to their standards. It is said to be a nice improvement over the older k69/de75. It is what they use in the reknown ki-396 that people are loving with a k510.
Either way, best of luck to you. There are a lot of nice drivers out there.
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Man that’s lucky. I paid considerably more for mine I got from the museum used with a k69. New price the best I could find was over $650ea
But yes I have like new k691s for sale. I just pulled them off my Jubilees yesterday. They really have very little play time on them. And I’m certain they’ve never seen more than 2w.
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On 11/2/2018 at 3:01 PM, babadono said:
Aluminum? or Beryllium?
Aluminum with the Mylar surrounds for now. I’ll upgrade the diaphragms to beryllium next year.
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I ordered a pair so they should be here any day now.
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7 minutes ago, teaman said:
What drivers are you moving to Adam?
Tim
Sent from my iPhone using TapatalkIm leaning toward Radian 950PB since the faitalpro 20at are discontinued.
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Selling the factory drivers from my Jubilees. Received them around May of this year. Light use. $400 plus ride for the pair.
Anyone?
K-691 Drivers
in Technical/Restorations
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