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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #71469 is a reply to message #71466]

Wed, 22 February 2012 18:53

Wayne Parham
Messages: 18792
Registered: January 2001

Illuminati (33rd Degree)

Can't wait to see and hear 'em!

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78420 is a reply to message #70558]

Wed, 20 November 2013 23:55

gigi6c
Messages: 2
Registered: November 2013

Esquire

Where is the circuit diagram of PSU for KT 120?

THANK YOU

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78428 is a reply to message #78420]

Thu, 21 November 2013 20:00

gofar99
Messages: 1950
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi, I'm on the road at the moment and don't have the files with me. I'll get back to you Saturday or Sunday.

Good Listening
Bruce

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78435 is a reply to message #78428]

Sat, 23 November 2013 20:02

gofar99
Messages: 1950
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi, The PS is attached.

index.php?t=getfile&id=1347&private=0

Attachment: OBHO PS May 19, 2013.jpg
(Size: 75.67KB, Downloaded 6173 times)

Good Listening
Bruce

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78446 is a reply to message #78435]

Mon, 25 November 2013 04:26

gigi6c
Messages: 2
Registered: November 2013

Esquire

THANK YOU DEAR
YOU HAVE THE BUILT, THE UNIT POSTED

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78456 is a reply to message #78446]

Tue, 26 November 2013 19:46

gofar99
Messages: 1950
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi The posted power supply is the one that is virtually identical to the earliest ones and is the current one used. Our kits are nearly identical to the diy posted projects. This is intentional as we want to make quality audio available to everyone without having to go broke in the process. We support both the commercial kits and the diy projects the same. Our experience is that because of skill differences some individuals like to source all the parts and build a custom version of our designs. At the same time there are many other individuals that do not have that level of skill or desire and for them we offer the kits.

So while there is an evolutionary process in the designs and some have significant improvements over a period of years, the KT120 amplifiers are mostly unchanged. The power supply they use is now common to all the large amps.

I hope this answers your questions, if not please write back.

Good Listening
Bruce

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78836 is a reply to message #78456]

Wed, 01 January 2014 14:30

Nounours18200
Messages: 1
Registered: January 2014
Location: France (Grasse)

Esquire

These monoblocks are going to probably be my next projet: I have built dozens of DIY devices, but this will only be my second tube project (after a tube DAC...).

Can we have more feedback from people having already built these monoblocks, particularly regarding the musical quality ?

Thanks !

P.S.: feedback regarding the difficulty to buit this amp (construction tips, bias setup,...) wouls be appreciated ! By the way, what is its weight ?

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Re: KT120 Class A Push-Pull U/L Mono-Blocks [message #78871 is a reply to message #78836]

Fri, 03 January 2014 23:00

gofar99
Messages: 1950
Registered: May 2010
Location: Southern Arizona

Illuminati (5th Degree)

Hi, Go to the diyaudioprojects.com forum on tubes. There are numerous comments. Also on Oddwatt amps in the same section. As for difficulty they are rather easy to build and trouble free. The KT120 mono blocks weigh about 30 pounds each when you use the recommended transformers. Since the amps were designed aroung those particular transformers the use of others may (or may not) compromise various aspects of the performance and stability.

Good Listening
Bruce

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