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-   -   6L6 class A single end amplifier (https://www.diyaudio.com/forums/twin-audio/163834-6l6-class-single-amplifier.html)

Musik007 25th March 2010 06:10 PM

6L6 class A single end amplifier
 
There are lots of 6L6 class A single end circuits. We designed this special circuit which used the classic pentode tube, 6SJ7 as voltage amplifying stage and drive 6L6 or 5881, with tube rectifier 5Z4 or 5Y3. The output power is 6.5W in pentode connection of class A. It is powerful enough to drive loudspeakers at and over 87 dB. It well-matches Mark Audio full range drivers like CHR-70 and Alpair 7.

Specification:
AC input: 220V
Power output: 6.5W
Output impedance: 4 & 8 ohms
3 signal inputs
Frequency Response: 25Hz - 30KHz (-1 dB)
Power consumption: 80W
Dimension: 340W x 230D x 160H mm
N.W.: approx. 10KG

Special Price: USD290.

https://i30.photobucket.com/albums/c...SJ7-6L6-02.jpg

https://i30.photobucket.com/albums/c...SJ7-6L6-05.jpg

https://i30.photobucket.com/albums/c...SJ7-6L6-09.jpg

Musik007 26th March 2010 03:29 PM

150W EI power transformer gives enough power for 6L6 single end amplifier.

https://i30.photobucket.com/albums/c...SJ7-6L6-07.jpg

Musik007 26th March 2010 05:04 PM

The output transformers for 6L6 single end:
Output power: 13W
Frequency response: 20Hz-25KHz
Primary impedance: 3.5K
Secondary impedance: 4 ohms and 8 ohms

Choke: 10H/300mA

https://i30.photobucket.com/albums/c...SJ7-6L6-14.jpg

https://i30.photobucket.com/albums/c...SJ7-6L6-23.jpg

johngalt47 26th March 2010 09:42 PM

Is $290 for a completely finished amplifier?

Musik007 27th March 2010 03:36 AM

Yes, USD290 for a completely finished amplifier with Chinese tubes.

Thanks.
Tony.

Musik007 27th March 2010 03:56 PM

Need to clear some stocks before new models come in. Only one left for this model.

freddi 27th March 2010 04:42 PM

what's shipping to US?

Musik007 27th March 2010 05:22 PM

Quote:

Originally Posted by freddi (https://www.diyaudio.com/forums/twin-audio/163834-6l6-class-single-amplifier-post2133354.html#post2133354)
what's shipping to US?

Let me check the shipping cost.

Thanks.
Tony.

Musik007 30th March 2010 08:54 AM

Quote:

Originally Posted by freddi (https://www.diyaudio.com/forums/twin-audio/163834-6l6-class-single-amplifier-post2133354.html#post2133354)
what's shipping to US?

The shipping cost from Hong Kong to USA is around USD180 via Speedpost.

Thanks.

Musik007 30th March 2010 09:02 AM

The amplifier was designed and soldered by Thomas.

https://i30.photobucket.com/albums/c...6J5-6L6-34.jpg

https://i30.photobucket.com/albums/c...6J5-6L6-35.jpg


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