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Old 1st September 2012, 03:12 AM   #2631
N Brock is offline N Brock  United States
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Here is a B1 + USB DAC I just finished today.

The DAC is a stripped down Behringer UCA202.
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Old 1st September 2012, 03:32 AM   #2632
lanchile is offline lanchile  United States
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Quote:
Originally Posted by N-Brock View Post
Here is a B1 + USB DAC I just finished today.

The DAC is a stripped down Behringer UCA202.
Very nice build! I really like the volume knob. You should try a TKD potentiometer, it is a big step up from Alps
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Old 1st September 2012, 03:42 PM   #2633
redjr is offline redjr  United States
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I like N-Brock! Very nice looking build.
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Old 5th September 2012, 08:46 AM   #2634
superR is offline superR  Netherlands
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Default 1-day project :)

Based on ESP P68. Proto1 is done. I have yet to connect a proper heatsink to both OPS and MJE's. I have a "large" DC offset of 30mVdc at low supply rails (+/-20Vdc). Is that acceptable in this design?
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Old 5th September 2012, 09:30 AM   #2635
regiregi22 is offline regiregi22  Europe
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IME, 30mVdc is quite common an acceptable in almost any design :-)
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Old 5th September 2012, 09:33 AM   #2636
superR is offline superR  Netherlands
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Nothing to worry about then? I have not built an amplifier yet with more than 10mVdc offset so I was alarmed.
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Old 5th September 2012, 09:39 AM   #2637
regiregi22 is offline regiregi22  Europe
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Even up to 100mVdc is not uncommon for a Gainclone, for example
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Old 5th September 2012, 03:23 PM   #2638
OnAudio is offline OnAudio
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Routhun tested his SYMEF over the weekend. You can read the review here Routhun SYMEF
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Old 5th September 2012, 05:35 PM   #2639
lanchile is offline lanchile  United States
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Quote:
Originally Posted by superR View Post
Based on ESP P68. Proto1 is done. I have yet to connect a proper heatsink to both OPS and MJE's. I have a "large" DC offset of 30mVdc at low supply rails (+/-20Vdc). Is that acceptable in this design?
you should not test an amp without the heatsinks on the output transistors and the 30mv is not so bad.
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Old 18th September 2012, 12:32 PM   #2640
demonzotov is offline demonzotov  Ukraine
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