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Posts posted by Good2BHome

    Don't Buy McIntosh

    in 2-Channel Home Audio

    Posted

    I bought my first Mac equipment in 1968 as a college student, with a bank loan. Banker thought I was crazy but I paid my bills ( I put myself through college as a bill collector). I still own and use that equipment almost daily, along with other Mac bought over the years. The only ONLY repair was a glass face plate broken in moving from Dallas to Atlanta in 1985. It was the movers (1st class corporate move) fault and they paid without questuon. Yes, I had to wait 4-5 months to get the glass, BUT I GOT THE GLASS for that C26 and I can get it again if I need it.

    The "MAGIC" of McIntosh: They fix what they sold 40+ years ago. The number of companies that still do that are a VERY short list which meets that type of criteria. The only one that comes to mind is Rolex watches (31 years) and that has been more necessary than for my Mac equipment. I too own a MX-130 and would ONLY part with it, if I can find a cherry C-39.

    In my experience, three words express service or any project you have to complete: "Fast" "Good" "Cheap" Of those three simple concepts / words, when you (and/or your boss) learn to ACCEPT, that you ONLY get to choose two of the three words, life becomes much less stressful and you undersand economics and reality. Example: you can have "Fast" and "Good", but it will not be "Cheap"!

    Rant / Lesson (you choice) over.

    Mike

    Tripath adventure

    in 2-Channel Home Audio

    Posted

    I too own a Teac A-L700P. I've had it for about 2 1/2 years and bought it new off of Amazon. I am very pleased with the sound. It is used with a McIntoch MX130 Preamp and a MC-2505 for the rear speakers. All five speakers are Cornwalls.

    All of that said. I've been looking, with little success, for better built and higher power Tripath technology amplifers. Any suggestions??

    Mike

    Vertical Cornwalls on eBay

    in 2-Channel Home Audio

    Posted

    There is a pair of Vertical Cornwalls on eBay that you might not see because the seller spelt Cornwall as "Conrwall". It is item #

    170174957668 rtCurve.gif

    They do not have the original K-33's at least in the one interior shown, but they can be an opportunity for someone.

    Off topic comment: I do not like the way the Copy and Paste function now operates.

    Mike

    Opinions wanted: Is the Altec Lansing 416-8A Alnico 15" a Good / Great replacement for the K-33?

    in 2-Channel Home Audio

    Posted

    Good2BHome

    Ok, it goes something like this...while the FS are close and the SPL is close, you would actually be going backwards because the 416-8 has an effective impedance of 6.9 ohms vs the 3.8 or so of the K-33...so in essence...you would have less bass due to the higher impedance of the 416....think in terms that your starting point would be -3db from where your woofers are now and you would have to drop the cornwall mid and tweeter -3db to break even and another -3db to allow the 416-8 to overtake the horns.

    Thanks! I understand the explaination and accept it.

    Bob,

    You are correct. They do have "B" crossovers in them. Sometimes, when in a hurry and tired the brain is not always engaged. I didn't have to look, I knew that!

    Summary: One less project.

    Mike

    Dim and Dumb help required

    in Technical/Restorations

    Posted

    Hey Mate,

    Now that you've perfected your picture uploading skills, might I suggest we next work on you advertising skills.

    Few are going to be drawn to the bottom of this tread to see your ultimate desire, which is to find this diaphram. So I would recommend starting a new thread with a title something like " Help need find a diaphram for ______, picture attached" Filling in the blank with what the diaphram is from would very helpful to those trying to help you.

    Best of Luck,

    Mike

    Cornwall II's with lattice covers

    in 2-Channel Home Audio

    Posted

    Look for the serial number stamped into the edge of the plywood above the label (if the label is unreadable) If it contains a letter "A" through "L" it is for sure a Vertical Conwall II. The change over from vertical to horizontal took place in 1974 (the "M") year so the the "M" could be either.

    The verticals are more desirable because they sound better IMHO! If the drivers are original they will have Klipsch logos on them. The K-77 tweeter is a round ALNICO. The K-55V squaker is a round ALNICO. The K-33 woofer is a square "mud" magnet. Should the serial number contain either the letters be A, B, C and maybe D and the woofer is round do not leave there without them!! If you don't want them I will come and get them from you!!

    Based on the example you pointed to, the "lattice" covers are probable caine.

    Best of luck, keep us informed and 600 would be a steal price for Verticals

    Cornwall Cabinet bracing - Input kindly requested

    in Technical/Restorations

    Posted

    Dean - Thanks for going to the time and trouble of posting that article. I have read it several times over the past few weeks but other than saying that adding a panel to the rear (which I will do) will help it doesn't really address my query (making the rear panel a constrained dampening sandwich).

    Maybe I should just go ahead and try a few things on my own. I don't seem to be getting any specific, pertinent feedback to the proposed premise in my original post.

    revjac,

    Sorry it took me so long to get back. IMHO bracing the back will do way more to improve the bass than it will do to improve the higher frequencies.

    My main idea is simular to DrWho's 2 x 4 comment. First I would use the original backs as a pattern to make new backs to use and preserve the originals for the future. Then use 4 pieces of either Ash or Hard Rock Maple 1" x 2" in a Tic-Tac-Toe pattern, with the 1" edge planed flat by a mill machine. The milled surface would be the surface next to the speaker back. Where the pieces overlap cut a 1" wide groove in each. A screw and glue would be used at each intersection. This "matrix" would then be screwed and glued to the exterior back. New damping material added to the interior side. And this does begin to approach "bridge making".

    The secondary idea was to epoxy 1/8" steel plates to the new backs.

    Different materials with different thicknesses

    DrWho,

    Did I understand your comment to mean: a stock Cornwall's interior volume is slightly too small. I have believed that for some time based on a comment Paul Klipsch made years ago which implied the same, but he didn't just come out and say it. I'm not enough of an engineer to figure it out for sure. Do you have proof and by how much?

    Mike

    Cornwall Cabinet bracing - Input kindly requested

    in Technical/Restorations

    Posted

    As well, my thinking and past experience says that the cabinet resonances might be well-served by having the second additional panel at least of a different thickness than the original and most likely also of a different material. The thought process here being is that different thickness and material will serve to dampen/absorb different resonant frequencies than those being handled by the original panel.

    It's all speculative. And I like it.

    What you have stated above is the way you want to go. Applied to the exterior. You do not want to change the interior volume any more than you have already with the brace you applied to the motorboard. I have other ideas, but not the time tonite.

    Welcome,

    Mike

    3-way Heritage Cornwalls

    in 2-Channel Home Audio

    Posted

    proko03

    Congratulations on the score!!

    Would you share some pictures (interior, exterior)? What are the serial numbers?

    Inquiring minds want to know.

    You really don't "own" Vertical Cornwall's you just take care of and enjoy them until the next fortunate caretaker comes along and pays you for the privilege.

    Mike

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