Dx Blame MKIII-Hx - Builder's thread - Page 205 - diyAudio
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Old 14th January 2014, 08:14 PM   #2041
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Originally Posted by a.wayne View Post
Would the mk3 benefit from more bias ...?
Simulations here: Dx Blame MKIII-Hx - Builder's thread

Remember?
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Old 14th January 2014, 10:03 PM   #2042
a.wayne is offline a.wayne  United States
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Yep .... Terry , guys , any updates to the the other build Thread ....?
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Old 28th February 2014, 02:03 AM   #2043
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The "silencing the lifted ground" operation makes a heck of a difference. It's now dead silent. I recommend.
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Old 28th February 2014, 03:06 AM   #2044
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Cool that we found how to resolve it. This is a really good sounding amp. As good as the Super A to my ears. That is a compliment, by the way.

Blessings, Terry
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Old 28th February 2014, 04:04 AM   #2045
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The "silencing the lifted ground" operation makes a heck of a difference. It's now dead silent. I recommend.
What did you do then?
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Old 28th February 2014, 04:11 AM   #2046
Junie is offline Junie  Philippines
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Martin tell us more.
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Old 28th February 2014, 01:16 PM   #2047
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Originally Posted by canonnica View Post
The "silencing the lifted ground" operation makes a heck of a difference. It's now dead silent. I recommend.
I completed the same mods and also have I hum free amp now. However, mine does not use a ground lift resistor on the board or bridge rectifier between the line cord ground wire and case. I have the line cord ground going directly to the case and ground wires from that point to the input RCA connector grounds. I was able to see the difference that this last connection made on the Arta spectrum analyser display. It produced about a 10 db drop in 60 hz content on the output.
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Old 28th February 2014, 01:36 PM   #2048
AndrewT is offline AndrewT  Scotland
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I have the line cord ground ......... to the input RCA connector grounds. I was able to see the difference that this last connection made on the Arta spectrum analyser display. It produced about a 10 db drop in 60 hz content on the output.
Leach discusses this option in Lo Tim.
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Old 28th February 2014, 03:12 PM   #2049
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As the Mk3 flies ..
Any improvement on the clipping characteristics ....?
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Old 28th February 2014, 08:11 PM   #2050
bonfis is offline bonfis  United States
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Leach discusses this option in Lo Tim.
Yup it's also recommended in Self's book.
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