6L6 class A single end amplifier - diyAudio
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Old 25th March 2010, 05:10 PM   #1
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Default 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.

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Old 26th March 2010, 02:29 PM   #2
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150W EI power transformer gives enough power for 6L6 single end amplifier.

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Old 26th March 2010, 04:04 PM   #3
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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

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Old 26th March 2010, 08:42 PM   #4
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Is $290 for a completely finished amplifier?
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Old 27th March 2010, 02:36 AM   #5
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Yes, USD290 for a completely finished amplifier with Chinese tubes.

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Tony.
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Old 27th March 2010, 02:56 PM   #6
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Need to clear some stocks before new models come in. Only one left for this model.

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Old 27th March 2010, 03:42 PM   #7
freddi is offline freddi  United States
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what's shipping to US?
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Old 27th March 2010, 04:22 PM   #8
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Quote:
Originally Posted by freddi View Post
what's shipping to US?
Let me check the shipping cost.

Thanks.
Tony.
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Old 30th March 2010, 07:54 AM   #9
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Quote:
Originally Posted by freddi View Post
what's shipping to US?
The shipping cost from Hong Kong to USA is around USD180 via Speedpost.

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Old 30th March 2010, 08:02 AM   #10
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The amplifier was designed and soldered by Thomas.

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