jnorv
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Posts posted by jnorv
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If I remember right, Klipsch used different expansion rates for each section of the K-horn. He refered to it as a rubber throat. NOt sure which paper he thus discribed it, but it was in one of his writings.
Upon further checking, he discribes this effect in "A Low Frequency Horn of Small Dimensions", 1941 and in "Improved Low Frequency Horn", 1942.
Jim N
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Kelly, You sure work cheap if that is all you charged for that web site.
Jim N
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Beware of horn replacement. It is a slippery slope. I started out with 511B/802Ds on my La Saclas and before I knew it I had a pair of 828 cabinets with 1005/288s on them.
Jim N
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I suspect that most high end TT manufacturers build their TTs with the idea that they will be put on non resonate , immoble stands. As a mechanical engineer, I find it hard to believe that any TT would not be better off setting on 3000 pounds of concrete imbedded in the ground rather than on some highly engineered rack on some unknown floor. It is the same argument made about the flexure of the panels of large horns that somehow adds to the listening enjoyment, as if the designers somehow tuned their speakers for panel flex.
Jim N.
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The design of wall mounted racks is not rocket science. I built one for a friend out of 2x4s and plywood. Mounted on an outside wall it was absolutely stable. He was running a Linn with an air bearing ET arm. One of the few systems that I have listened to that could resolve the opening tracks of DSOTM. You could jump up and down on the floor next to it and not get mistracking.
Jim N
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The best cleaners that I ever used were Tri-Chor vapor units at Texas Insturuments in the early 60's. Not sure what it would do to vinyl. We also used ultrasonics with good effect.
Jim N
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An old friend showed up from London and wanted to listen to some Stones. Since I did not have any on Cd I drug out the turn table and th boxes of old vinyl. Still dont like the Stones , but I did rediscover Hendrix. He does things with stings that rival Mingus and Coltrane.
Jim N
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From Forward Air
https://www.forwardair.com/servlet/fwrd.unix.servlet.StartPrepaidServlet
250 pounds from SF to Baltimore $286
Jim N
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Fini, that is why I have been reluctant to post my LaScalas for sale. The thought of packing them up for shipment is beyond me.
Jim N
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It is about $300 to ship them from SF to the East coast by Forward Air.
Jim N
San Jose, Ca
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For almost no money, you can get a feel for what a RTA does. Go to WWW.trueaudio.com and download his free software. That and a $3 mike from Fry's will give you some idea of what an RTA will do. I bought into the full 1/24 octative analyzer for $100.
Jim
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RTA - Real time analyzer. It takes an incoming signal and displays it's energy content as a funtion of frequency. For a perfect speaker, if you put in a pink noise signal, the output would be flat on an RTA. The Shark preamp does what any preamp does. It takes a low level signal and converts it to a higher level. This one also provides the power to drive the mike. I use mine to look at the frequency response of my various low end speaker experiments. I am trying to get flat to 30 Hz. So far I am down to about 35 with my 828's and 515B's.
Jim N
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You can buy a Behringer 8000 mike and mike preamp for about $110. Couple this with a sound card and free soft ware and you have an RTA. Works for me.
http://www.musiciansfriend.com/srs7/sid=030922132244216103104218723836/g=home/search/d=tp?q=ecm+8000
Jim N
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You can use your computer as a signal generator. See
www.satsignal.net/ I use Sweep Gen. For an RTA see www.trueaudio.com
Jim N
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C&S,
I am in the process of installing a pair of 2245s (18) in the bottom of my 828 cabinets. Sealing the upper portion for a horn loaded mid (515
. Did you horn load your 515 or just do a BR box.? How low are you using your 515s? What frequency did you tune the 515 box to?Jim N
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I haven't heard Holy Cole yet, but I will. I , also, like Eva Cassidy's "Live at blues ally".
Jim N
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Dave, I considered that very same solution. I was not able to find the switches. My only concern was with the contact at the center pivot. I guess you could screw right to the blade and eliminate that concern.
Jim N
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Sounded like a good deal until they wanted my SS# for the order.
Jim N
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You might want to consider graphite as a lubricant. It is (was) used in locks. Goes on as a dry powder so will not attract dust. Not the same as the stuff in pencils.
Jim N
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A mounted shelf will sometimes cure the problem.
JIm N
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OK, but which battery sounds the best?
Jim N
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Is the Rane XLR or TRS?
Jim N
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Well they dont really have a sound. Do a search in 2 channel on tripath. Leok has done extensive work with them. He suggests some mods to the eval boards for better sound. I am just running them as they came from the factory, since I am an ME and am electronically challenged. I use them for background music during the week. For serious listening I use a 300B SET for the HF and a Rowland 5 for the LF. I think that that sounds better but not by much. Idle power is 0.6 watts. At 100 db, using 288s on 1005s and 515Bs in 828 cabinets, I see maybe 2.4 watts draw.
Jim
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For $100, I bought an 8 watt/chan TriPath digital amp evaluation board. Input is 12 volts DC. Sounds pretty good. I use two of them to biamp my horns.
http://www.tripath.com/audio.htm
Jim N
. Did you horn load your 515 or just do a BR box.? How low are you using your 515s? What frequency did you tune the 515 box to?
Free dual 1219 TT
in 2-Channel Home Audio
Posted
I have a Dual 1219 TT that is up for grabs. It needs a headshell, so I dont know how well it works. It does spin up. Shipping charges only from 95112.
Jim N