Author Archives: pat

A “Repeat Offender” a good thing….

January 26, 2012

Dave has become another member of the select crazed audio club here on Classic Tube Audio. Pictured his latest “Super Sub” project. MORE POWER … in his own words: “On the side I’ve been working on a “Tuba HT” horn sub-woofer with plans purchased from http://www.billfitzmaurice.com/.  It’s finally nearing completion!  It’s quite monstrous measuring 36x36x24 but having La Scalas and A-7′s in the house, I’ve successfully conditioned my folks to be accepting of large speakers. Dave I think your parents my be relocating you after you fire this up!… Pat~

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Near Ready!

December 4, 2011

Almost ready to go back to it’s owner.. After some extensive mod’s, this now excellent sounding Harmon Kardon Citation II is near complete. Now it’s in final burn in, prior to setting bias/balance and AC balance. The sound? startlingly clear, fast, detailed, rich, deep solid bass…

 

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McIntosh MC60′s

November 20, 2011

See our “Components, Parts, Tubes & More For Sale” Page for details about this very fine pair of McIntosh amplifiers we are accepting a purchase deposit  now ..we will start restoration soon…Thanks, Pat the “Tubeologist”

 

 

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Interesting?

November 19, 2011

Any Idea?

I thought this graphic was cool, I’m trying to see how I could use it in a possible new logo or graphic idea for Classic Tube Audio

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Many ask, few know “Till Now”

November 9, 2011

My “Holy Grail” of amplifier… yes to my grave with me

The Atma Sphere “Novacron”

 

First some specific’s

All triode operation
Class-A operation
Patented Output TransformerLess circuit
Balanced Differential Design
Mono construction
Zero feedback
Standby switch for long output tube life
Separate bias controls for each tube
Simple, reliable circuit – one stage of gain
“Star” grounded circuit

Now the “SPECIFICATIONS”

Class A 60 watts RMS into 8 ohms
Power bandwidth: 2 Hz – 75 kHz within 1/2 db
Frequency response (1 watt): l Hz – 100 kHz within 1/2 db (-3db @ 1 MHz)
Phase shift: less than 1 degree @ 20 kHz
Power supply storage: 600 Joules/chassis
Output section risetime: 600 V/micro-sec.
Power consumption: 500 watts/chassis
Tube complement (per channel): Four 6C33C Russian triode power tubes
Four 12AT7 driver tubes

Ok, you have it my secret revealed..This is my amplifier type of choice pure OTL..no output transformers! My “HOLY GRAIL” the cleanest fastest, most transparent, most musical, most everything of any amplifier I have owned over my 40+ years of listening..

here are a few links to products by Ralph and his company Atma Sphere and a link to the ways of OTL’s and more. Enjoy

Atma-Sphere Company Website
www.atma-sphere.com Resources Common Amplifier Myths
 www.atma-sphere.com Our Basic Circuits

Thanks  Ralph and too your magic …

As good as they did sound without mods, I have completed many upgrades over the 10 years and now they are again at a new level of ultra performance.. sorry don’t ask, my secret.. just for me :-) well a little bit of a secret: it’s partly “Tubeology”

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“What’s Go’n On!”

November 3, 2011

I thought it would be fun just to snap some action pictures of work around the shop today. November 4, 2011..How good are you at guessing what you see in the photo’s?.. Components, Test Gear, Etc.. Do you think you know vintage audio? If you name all of the audio/stereo/tuners/components.. you can win? win what you say?.. a feature about you and your audio system right here in the main “Blog” you can show all your buddies! cool right?.. well…get started..I will post comments as they come in..5000 plus visitors a month will see your name up in lights!

Most of all have fun!

“Pat” the “Tubeology” Guy

 PS: you can click on the pix’s and enlarge..

Posted in Caps, Components, For Sale, Mcintosh, tech stuff, Tube Fun, Tubes, Uncategorized | Comments (0)