seti
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Posts posted by seti
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Who has joined the Kickstarter? it is going really well at almost $60K...
https://www.kickstarter.com/projects/loveinjectionnyc/the-dope-from-hope-book
This will be the best Dope From Hope Collection of all time. Jim reached deep in the archives. I can't wait to see it I am down for two copies.
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Marvel gave me a 707 but after much uses I got frusterated with brittle tape. I passed it along to a young audio junkie. Now I am restoring an old Revox for fun. I love the sound the action the meters...
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1 hour ago, KT88 said:
I think that's a good idea. I would additionally offer a similar amp in the same Metropolis movie like cabinet but without electronic crossover...for all lovers of Cornwall, Heresy, LaScala and Klipschorns from today's production. I bet there will be buyers if the price is adequate but doesn't shoot into unaffordable spheres, maybe a few $K might be attractive. No one would have to ask if these amps would be a good match for Klipsch Heritage speakers.
I believe Cary Audio did a Klipsch specific amplifier.
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4 hours ago, rigma said:
Great job Seti!
You were the first to encourage me to go the DIY route... Thanks 8-)
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This is the article that started it all. Thanks to Jim Hunter.
Then there was this PWK schematic that was related to the article. It isn't secret it iwas wall art at Klipsch in Hope. We were the first to build it 8-) since PWK in 1946. My friend Chris made some minor changes here and there. PWK's electronic crossover and this schematic is what we did. You could do similar with traditional outputs. Ain't nuthin stopping ya 8-) It could easily be a 2A3 version..Since there was no power supply we went overboard.
This was on the wall at the museum... Been looking at it for years.
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On 1/19/2023 at 8:31 PM, MZKITTY said:
We built these after seeing them at Mrs. Valerie’s.
Are those my old MC30's? Most beautiful amps Mac built.
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On 1/20/2023 at 2:37 PM, henry4841 said:
Now that is an old one for sure. I have 6 or so old scopes but none that old. My repairs of old scopes has been hit or miss. Most times it is a power supply problem though.
But getting back to reforming old caps, unless the equipment is decades old I do not go through the trouble myself. Does not hurt to be too careful though. To answer the how question, slowly bring the power up to approximately 60V's and hold it awhile there then slowly bring it up to line voltage from there.
I have a stack of 40's HP gear IT IS HUGE!
I bring them up very slowly but yeah the culpret is usually a cap somewhere. Never leave tantalum caps always replace..
I think I replaced 1000 caps in a stack of Sound Technology test gear but hey it all works now.
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Here is what I used to setup as curve tracer. Being able to step through caps and parts while in circuit is invaluable tool.
Here is a terrible pic of mine.
It is also fun to restore scopes of course it helps to have one as a curve tracer to start with....
Check your craigslist I bet there are a handful to choose from.
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9 minutes ago, tigerwoodKhorns said:
Yea, I am updating my electronic tools lately as I have several amps that are due for caps and refresh and I need to brush up on my skills with these.
So any scope?
Yeah there are some cool ones out there I have HP, Tektronix, and a sencore. The sencore is cool because it can measure voltage at the same time but you wouldn't want to tie up that scope for one purpose. I really like the tektronix scopes. There are lots of them and they are affordable.
I am rebuilding my workbench from scratch which should be fun.... lol scary.....
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10 minutes ago, tigerwoodKhorns said:
Any recommendations for a particular oscilloscope?
I'm using a late 1940's HP Scope and it is fine for this use.
Best diagnostic tool I've ever had.
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On 1/20/2023 at 10:32 AM, babadono said:
So I think JWC built the snails before my tenure here...but basically they are a non bifurcated Jub. bass bin?
There are cool build threads somewhere on this forum.
Snailhorn curve I found inside corner-3feet-micoffgroundon onaxis-K31-smoothed.
Also a mid construction pic.
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12 hours ago, Marvel said:
I would guess the snails would fit in my pick up. Those are worthy replacements for my MWMs.
Sent you a PM. Rent a truck come on down 8-)
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These would be the ultimate DIY horn play set. No kidding. I 've had them in so many combos and they are so much fun. Selling as a group. If i don't sell I won't be sad.
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This is a tough one to post.
I need some space and some funds for a project. JC built all these and they are all amazing I have tons of hours on these and have had them for many years in multiple configurations. I don't want to part with them but they need to sing and I need a little cash.
Pair Tractrix horns 60hz-600hz straight. Black needs a fresh coat of paint and some clean up. There is a crushed corner on the dog house but it came like that I never fixed it. These come with four Eminence Delta Pro-12A 12" Cast Frame drivers. These horns sound amazing.....
Pair Snail Horns you can load these with anything from 12" to 18" woofers. These come with four Klipsch K31 drivers. Pretty low up to about 300-350hz
Pair of mid Tractrix Horns no drivers and need to do your own mounting plate. I have 4 different mounting adapters you can have two jbl and two not sure but could be helpful.
I have a pair of round tractrix tweeters but they are offered to a local diyer for free. If he turns them down I'll offer them for free as well.
6 horns
8 drivers
$1000 for all of it and
They are dusty and need cleaning up I just didn't have time.
Pickup only Little Rock
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Thanks guys. I love the look and am going to use it on my next projects. I have 5 or 6 of these ham chassis. Can't wait to do the big one.
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1 minute ago, OO1 said:
the Large Variac Knob is a really cool feature .
It functions as On / Off and Gain control.
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1 hour ago, henry4841 said:
Really nice and cool looking. I would be proud as I am sure you are. Five watts are all that is needed with our speakers.
This amplifier will only work on the #1 Klipschorn in the museum WE555 on the HF and the first khorn sported a Jensen A12PM in the LF. PWK designed the electronic crossover for this speaker specifically....
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Finally 99.6% completed. There are only two things I would change so not too bad. This was a hard learning experience and I will never build exactly like this again 8-) Here is the recap. Built this mono tube amplifier for the Klipsch Museum with the much help from Chris Hornbeck and Intact Audio. It was a found schematic from the Klipsch archives for the #1 Klipschorn from 1945/46. It is a push pull triode 5 watt amp with built in electronic crossover. It is made specifically for the first klipschorn. The first khorn bass horn featured a Jensen A12PM and the HF a prototype horn with a Western Electric 555… Amazing. This is a gift it to the #1 Khorn and Klipsch Museum for PWK's birthday in March so maybe next years birthday we will be able to listen to the #1 khorn as they did at a party to celebrate the end of WW2. Not sure how long this build took but it was worth it. BTW it is a 5wpc and it does go to 11 as did the orginal in 1945/46…
Dave Slagle of Intact Audio studied PWK's electronic crossover design and donated all the transformers. The top plate and front plate are from Front Panel Express. Jim Hunter found the an early PWK signature and Matt Sommers made that into a logo.
We still have some final adjustments and some testing to do but it is largely done. I love the old HAM chassis and buy them as I see them. A great way to wrap up a project.
It is DIY so it ain't perfect. Hope @Chief bonehead approves 8-)
Early in the testing process.
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For really old gear I use an oscope with a curve tracer to check cap condiiton. It can do this in circuit. A friend who was a tube tech for many years turned me onto this tool and it is the most useful dam tool I have.
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You can do that to be on the safe side. I only do it for amps I do not know the history of but ones I know I just power on.
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You could literally drive it with miliwatts not watts..... I can't wait to try a pair on some big ole horns.....
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22 hours ago, OO1 said:
a few of us have a picture of the lamp , but being it's PWK's house , we should respect the Privacy of Paul and Valerie Klipsch , in their Absence
Valerie invited us all into her home to take pictures with us and talk PWK several times. Celebrating anything PWK related made her happy. Of the things that would have annoyed her pictures were not on the list. Ask Colter 8-)
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I thought I saw a Horn Table Lamp at Valerie's house once... Gonna look through some pics.
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23 hours ago, henry4841 said:
It appears the Chinese do not have the ability, at least Psvane, to produce really low noise, matched internally for dual triodes, tubes consistently as the giants in tube manufacturing era did years ago.
I have a hunch most modern tubes especially rectifiers can't hold a candle to originals.
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Dope From Hope Kickstarter ?
in 2-Channel Home Audio
Posted
I can't wait to see it I hope it gets enough funding. It is so close.