JohnA
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Posts posted by JohnA
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The K-700 makes for a nice sized lamp, nearly the same height as the ginger jar lamp that donated it's organs. It is now on my nightstand and the extra area of the base is usable for some of the stuff I usually keep there. A K-400, ..... hmmm?
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there is no difference in the performance due to the lead attachment method. But, but sure to use a good film and foil cap and avoid electrolytics in speakers.
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16 minutes ago, thebes said:
Take for example the demise of a Bruce Springsteen album for a fruit bowl.
The horror..the horror
Not so much. Springsteen is sad and depressing. You know, it could have been an old Brubeck or Monk record.
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I would look at improving your room acoustics first (damp reflections and reverberation, the surrounds provide the intended reverberation). Then, look at upgrading your receiver. The RP-8000 speakers, at 98 dB/w/m will not challenge the power section of your Denon, so more power will only be noticed at very high SPLs. The preamp and processor sections of your receiver make a large contribution to sound quality and clarity, more than the power amp, in my experience.
Adding a power amp to a receiver has become a fad, but I can't imagine why. Seems like racing tires on a tired Yugo to me.
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Thank You! It's a geeky sort of labor of love.
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On 12/10/2022 at 10:45 PM, Islander said:
For anyone who hasn’t heard about this, here we go. The old cast aluminum K400 horns did indeed ring when struck, if it was out of the cabinet. Once it’s secured to the motor board and supported by the bracket near the back end of the horn, the ringing disappears.
I just tested a mounted K-700. When struck there is a short duration "ting". The K-700 is much shorter and has smaller wall surfaces than a K-400, making is naturally stiffer and less prone to ring.
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At 21 years old, you probably do not need new/refurbished crossovers (maybe not even at 41 years, in my experience). The sketchiest part is the replacement diaphragm and the skill needed to swap it out. I've got a squawker that had an open voice coil and I paid a well regarded shop in Nashville (they had some of Charlie Daniels' amps in for repairs) to replace the diaphragm and it buzzes on piano after. It was bought for backup, so I haven't tried to fix it again. The work looks deceptively easy.
Your speakers only need regular use.
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On 11/23/2022 at 6:02 PM, RLink said:
Hello everyone. Question, would Heresy IV's (Pair) make for a good center channel speaker or speakers? I currently have the RC 64III and its beautiful but I have to increase the volume quite substantially for this center channel compared to the rest of my surround sound speakers to be able to hear the voices sometimes when watching a movie.
Any input or suggestions welcomed....................Happy Thanksgiving to all.
You should use the center speaker designed to match your front pair. If your fronts are H IVs, use a 3rd for the center. If the RC-64 III matches your front mains, get a sound meter and calibrate your system. Sometimes movies are mixed so that dialog is not clearly audible. That doesn't happen regularly in my system, but it does. It must be a "style" for film makers.
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I didn't know you sold your MWMs! What I'd do is 2 MWMs and 2 La Scalas per side and cross the MWMs as high as practical. I would think that would be easier to find than a whole MCM 1900 rig.
Maybe you could rent 2 KPT-1802 and some KPT-396s from Klipsch. I'll bet I can find a copilot or 2nd tow vehicle.
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On the floor and close to one, or more walls. Distance to taste. Most Heresies before the IV are a touch bright. I think they need a subwoofer because the response below 70 Hz is weak. I had 7 at one time. Four helped me buy H IVs.
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I would like to have an update, too. I've tried to call him and can't get through.
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Inspired by dtr20, I made a K700 lamp, of my own. I used a die-cast K700 I'd bought for a stillborn monitor project.
I had a friend turn a pair of adapters for the horn's throat and then cannibalized an old lamp a GF gave me 40 years ago. The base is mahogany, bought in Chattanooga, planed in Huber Heights and finished with linseed oil at mi casa. I could not see the figure in the grain until after it was planed and had to work a little to show it in the finished lamp. The plaque was a gift from Hunter @JRH at the first pilgrimage, called "The Klipsch Fans Tour Of Hope". I kept it in my Klipsch file folder for over 20 years until i found this use for it!
I hope Mr. Paul's soul gets a smile.
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My kinda music!
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The years of research have resulted in better sounding gear available now, if you choose well. I would buy newer, if not brand new components. I have always been a fan of separates over receivers, even though I have a few receivers, now.
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Yes, you did. Bummer. But the perfect opportunity to upgrade to the K-77-M diaphragm with a higher power rating. It has ribbon leads.
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I used a rolled up towel to plug the port of my Marantz Imperial 7s. Then, if placed in a corner the bass was deeper and noticably so, but still balanced. I used them that way for several years in the Dorm.
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Nice1 But you gotta work on your room, or turn the subwoofer down, or both.
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20 minutes ago, deang said:
I wonder what the odds are of finding some K-77-M's that haven't had their diaphragms changed out.
I can't tell, but it sounds like you are suggesting the K-77-F has the 5 watt rating, but it doesn't. Also, the K-77-F will only fit if the cutout is large enough. So, that would be anything where the Z-brackets were supported.
K-77-Ms don't need the diaphragms replaced. They came with the ribbon lead diaphragm that carries the higher rating.
Perhaps they were not -Fs, but the K-77-? I saw in the Lab would have fit my '81 LS. The flange perhaps pushed the mounting screws wider, but wasn't definite.
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On 9/19/2022 at 2:12 PM, gigantic said:
I currently have a Denon AVR that sounds great and does everything I need it to, but I've been seeinga lot of mention about having a dedicated two channel receiver. What's the benefit? also, is there an advantage to vintage 70's gear, which is all the rage these days, vs amps and receivers from the 80's and even now?
No.
However, a good 2-channel amp/receiver will have a power supply with much greater reserve power capacity than your AVR. The old Tanks of the 70's had to meet the FTC power rating procedure so the bits and parts were sized to handle more heat and the the PS was robust. The old amps mostly had low Damping Factors and tended to sound soft similar to a tube amp. I like the sound of modern amps with large DF better (crisper and with tighter bass). To get both I went with all separates. My power amps take a long time to go quiet when the power is turned off, demonstrating the depth of the energy reserves. All that comes at a price, though.
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6 minutes ago, KT88 said:
Honestly, I'm not the type of guy who has to be right. On the contrary, I am very glad that you have clarified it. But on the other hand, do you know if the oil in the old Klipsch capacitors is completely harmless?
No. But it should be no worse than motor oil. You wouldn't lick that off your fingers.
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4 hours ago, KT88 said:
I am completely with you on this point, svberger. There is only one objection. As soon as you see the slightest liquid it is dangerous for your health. The old caps contain PCBs which was used for cooling. @deang will know if the old Aerovox caps Klipsch used are affected. PCB is extremely highly toxic and it spreads in the air when you see droplets of it.
Not true. PCB is used in high voltage xfmrs and the like to retard fire and heat breakdown; it is nearly inert and almost will not breakdown. It is difficult to get it to burn in a coal-fired furnace at 3000F. It was not used in the motor caps Klipsch put in the Type AA. I doubt the older boxy caps used in the Type A had it either. It's pretty expensive stuff.
https://www.tedss.com/2020005873
But a leak means replacement is needed. The oil conducts heat and improves the insulation of the dielectric.
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21 hours ago, svberger said:
My journey continues. Have a pair of '77 La Scala's that came with the original metal can caps on the AA's. Liked the sound as is and resisted refreshing them. Then I gave in, bought some new Type A crossovers with Sonicaps from the company who shall not be named(went with A's because I disconnected the zener diodes and so figured no reason to get the AA's). Had them in for several months, no issues, liked them just fine. Not much difference after they seemingly broke in some. I also decided in that time that when @deangwas up and running I would order some new, Klipsch approved crossovers from him.
Last night I was bored, so threw in the old crossovers again, and man if they don't sound really good. I figured they would be a little duller then the new one's, but they're not. All the detail and high end is still intact, but there is a nice warmer overall presentation that seemingly was missing with the newer X/O's. Probably just in my mind, and probably my 65 year old ears doing their thing. But I like what I'm hearing, and think I'll leave these in there. At least until I'm able to get the approved variety's in there.
Over and out.
Not all of the old xovers I've had needed to be recapped. I'm sure the AAs do sound better than the As. The tweeter section adds needed EQ and attenuation to the K-77. In a home setting, the -M tweeter should not need the zener diodes. If you still have original K-77 tweeters, I'd reconnect them until you can install the -Ms ribbon lead diaphragms. The K-77 is rated at 2 watts continuous/20 watts peak. The -M is rated at 5 continuous/50 peak. Change the diaphragm and you'll get the higher rating.
Better yet, Try to find a pair of K-77-Fs(?) that flush mount the tweeter mouth to the front of the cabinet. or send me a PM.
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I use Audacious and an OLD version of RealPlayer. Ver 10, I think. No ads.
Gil MC D
in 2-Channel Home Audio
Posted
Gil and I exchanged e-mails, yesterday. He said to say "Hello!" to all of you.
He is in a new facility in Chicago and finally getting PT. He is able to do some walking with a walker and is getting more use out of his left hand. He says it is slow progress, but I think it's grand! His old phone quit working and BIL Joe has shipped him a new one, due this week. Maybe he is a little harder on phones than some of us. 😉
I was getting concerned since he had been unreachable, but I think, now, that he's OK and getting what he needs.