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20th January 2013, 10:21 PM
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#41 | |
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diyAudio Member
Join Date: Sep 2009
Location: at Lake coast
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Quote:
This is a great info for all who like to taste the sound of this Amp. Thank You for great DIY spirit and will. Andreas |
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21st January 2013, 12:17 AM
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#42 |
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diyAudio Member
Join Date: Aug 2004
Location: Uppsala,Sweden
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I own a LC Audio Patriot 100 amp (weighing about 100 lbs) that probably has much in common with the LC Audio Millenium amp. I use my amp for driving Eton ER-4 tweeters and although it´s possible to run the amp in 2*100 W class A I seldom do this, but instead use the class A reduce mode that limits class A operation to about 2*15 watt then class AB.
One thing is the low input impedance as I have planned to use some good teflon capacitors to the input for blocking low frequences that can make the amp clip. The caps have to be relatively high in capacitance and four of them (balanced input) will cost a lot. Found this and hopefully it´s not an illegal address ( have a look at page 8 for the Millenium schematic). http://www.diyaudio.ru/filestore/Mil...-_cookbook.pdf
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Without wonderment,no life. |
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21st January 2013, 12:46 AM
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#43 |
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Banned
Join Date: Jan 2013
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Woah, I love this cookbook.
Interestingly, this design is based on SWTPC Daniel Meyer's fully complementary from input to output amplifier circuitry (minus the feedback), which also happens to be my avatar... Methinks of an op-amp circuitry similarity concerning this Millenium? From Radio Electronics December 1973, I built (4) of those awesome sounding amplifiers. I regret having sold them... This is the schematic: http://www.swtpc.com/mholley/RadioEl..._1973_pg44.jpg  ~~~~~~~~~ You can’t build a reputation on what you’re going to do. ~ Henry Ford There is no security on this earth; there is only opportunity. ~ General Douglas MacArthur There is nothing new under the sun, but there are lots of old things we don't know. ~ Ambrose Bierce The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do. ~ Galileo Galilei |
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22nd January 2013, 02:50 AM
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#45 | |
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diyAudio Member
Join Date: Sep 2009
Location: at Lake coast
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Quote:
It looks that Your amplifier is ''Green'' oriented in ''reduce mode'' very nice feature indeed, I'm curious about the lowest ohmic ability of the amps You mention ? can the Patriot continuously drive 0,5 - 1 Ohm constant load ? Nicest regard, Andreas |
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23rd January 2013, 06:55 PM
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#46 | |
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diyAudio Member
Join Date: Oct 2011
Location: Close to Copenhagen
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Quote:
I am waiting for permission to show the manual, but unfortunately the complete PCB layout is missing. The circuit plus PCB component locations is described. I don't think the exact layout has ever been published, so there should be some layout work left for the dark winter days.  rgds. Kim |
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23rd January 2013, 07:23 PM
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#47 | |
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diyAudio Member
Join Date: Oct 2011
Location: Close to Copenhagen
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Quote:
The one from Radio Electronics looks a bit like the Leach double superamp. One of the The End mk.II amps made by me used the quite low ft MJ4502/802 from Motorola....I did try with those 90V (45dc-0-45dc max rails)old power transistors just to check if something audible was missing....I could not hear any loss whatsoever. |
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23rd January 2013, 10:23 PM
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#48 | |
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diyAudio Member
Join Date: Sep 2009
Location: at Lake coast
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Quote:
Lot's of those late night, quite hours, currently availl...  Nice regards, Andreas |
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24th January 2013, 08:51 AM
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#49 | |
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diyAudio Member
Join Date: Oct 2011
Location: Close to Copenhagen
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Quote:
 rdgs. |
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24th January 2013, 11:13 AM
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#50 |
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diyAudio Member
Join Date: Oct 2011
Location: Close to Copenhagen
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Great news for analog fans
I have just received written permission from L.C.Audio and the owner of the schematic to show the manual.
I have translated the danish manual to english for the fabulous well sounding : "The Millennium XP" DC amplifier. Find the link for Millennium XP on my amateur site: TUBEAMP Secondly I have oploaded the 1995 Danish layout for "The End mk.3.1". The link for the mk.3.1 version at my site above. Finally the question: I asked the owner of L.C.Audio whether he would consider to produce the PCB and component kit for the 3.1 and the Millennium once again. The owner said that the minimum order for him was 100 pcs. of the PCB either for the 3.1 or the Millennium. L.C. Audio has a very good reputation, but the company is not very large and do not have the economy to produce what ever costumers and I asks for. If we could gather several persons who could have interest, and would like to buy the PCB's for either the 3.1 (which uses standard components) or the PCB for the Millennium XP ( which uses SMD components) , L.C. Audio would be willing to produce the kit's once more. I have a responce gmail which is: kim.jul.hansen2012@gmail.com When I know the approx. price for the kit I shall return. Rgds. Kim Ps. I am old fashioned ....I like "The End mk.3.1" ....look at tubeamp to find the 3.1 |
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Thanks tiefbassuebertr for all the info, this should be a sticky!
Yet I've been at it all my life 
)
