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Controlled testing
Yahzi
post Feb 19 2013, 23:30
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Joined: 21-November 12
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I know bias-controlled testing is brought up when discussing amps, CDPs and cables, but the testing methodology itself is almost never explained in detail to the laymen - ie a step by step tutorial. I think it would great if people could do this kind of testing at home for themselves. My question is, is it possible for anyone to do or does it require extensive know-how to get right?

Let's assume you wanted to test two amplifiers or two DACs - to the amateur, what is he in for? How complicated is the process? This thread is really just to outline what is required so that others can do the testing at home.
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- Yahzi   Controlled testing   Feb 19 2013, 23:30
- - Yahzi   I see this forum does not get much activity. Perha...   Feb 20 2013, 12:03
- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 19 2013, 17:30) I know...   Feb 20 2013, 14:17
- - mzil   An ABX comparator switch box is definitely the bes...   Feb 20 2013, 17:07
- - Yahzi   It's seems daunting to me...   Feb 20 2013, 18:03
- - mzil   If you have the means to level match ( a $20 ...   Feb 20 2013, 18:20
- - Yahzi   Thanks for the in-depth reply, mzil. What do you m...   Feb 20 2013, 18:23
|- - mzil   To conduct a fair test, the two devices must be pl...   Feb 20 2013, 18:43
- - Yahzi   That makes complete sense! But if you are comp...   Feb 20 2013, 18:57
|- - Porcus   QUOTE (Yahzi @ Feb 20 2013, 18:57) That m...   Feb 20 2013, 19:19
|- - Arnold B. Krueger   QUOTE (Porcus @ Feb 20 2013, 13:19) QUOTE...   Feb 22 2013, 18:06
- - dhromed   My Denon receiver has an analogue knob, but it...   Feb 20 2013, 19:16
- - mzil   If you connect the test meter, play the test tone ...   Feb 20 2013, 19:22
- - Yahzi   So then comparing different equipment isn't so...   Feb 20 2013, 19:29
- - mzil   If you don't care about validity, then no cond...   Feb 20 2013, 19:33
- - Yahzi   Mzil, I wanted to send you a PM as I have a questi...   Feb 20 2013, 19:47
- - mzil   I have temporarily engaged PMs. Try it now.   Feb 20 2013, 20:03
- - phofman   Blind tests for different equipment are a bit more...   Feb 20 2013, 20:18
|- - Arnold B. Krueger   QUOTE (phofman @ Feb 20 2013, 14:18) Blin...   Feb 21 2013, 15:43
- - Yahzi   If one does not have an ABX comparator then the te...   Feb 23 2013, 09:14
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 23 2013, 03:14) If one...   Feb 23 2013, 20:18
|- - DonP   QUOTE (Arnold B. Krueger @ Feb 23 2013, 14...   Feb 24 2013, 19:12
|- - Arnold B. Krueger   QUOTE (DonP @ Feb 24 2013, 13:12) QUOTE (...   Feb 24 2013, 20:07
- - Yahzi   I'm always trying to be introspective about wh...   Feb 24 2013, 08:54
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 24 2013, 02:54) I...   Feb 24 2013, 14:23
- - Yahzi   QUOTE ("Arnold B Krueger")That's how...   Feb 24 2013, 16:01
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 24 2013, 10:01) QUOTE ...   Feb 24 2013, 18:49
|- - mzil   QUOTE (Yahzi @ Feb 24 2013, 10:01) [What ...   Feb 24 2013, 19:35
- - Yahzi   Correct me if I'm wrong but I read an article ...   Feb 24 2013, 17:31
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 24 2013, 11:31) Correc...   Feb 24 2013, 18:36
- - greynol   Agreed, although that doesn't help to address ...   Feb 24 2013, 20:22
- - Yahzi   QUOTE ("mzil")Have you already seen this...   Feb 24 2013, 20:40
- - Yahzi   If the DBT results were published at the AES does ...   Feb 24 2013, 21:34
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 24 2013, 15:34) If the...   Feb 25 2013, 14:41
- - mzil   ^To add to that I'd like to say that having do...   Feb 25 2013, 20:34
- - Yahzi   QUOTE ("mzil")It is quite empowering Yah...   Feb 25 2013, 21:18
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 25 2013, 15:18) QUOTE ...   Feb 26 2013, 02:01
- - Yahzi   Arny, I noticed on occasion you bring up time sync...   Feb 28 2013, 12:52
- - pdq   It's not that complicated. When you switch rap...   Feb 28 2013, 15:29
- - Yahzi   Okay, but if the streams are not synched ... that ...   Feb 28 2013, 16:45
|- - Arnold B. Krueger   QUOTE (Yahzi @ Feb 28 2013, 10:45) Okay, ...   Feb 28 2013, 20:37
- - Yahzi   So double blind testing only really works if you a...   Mar 15 2013, 10:22
|- - Arnold B. Krueger   QUOTE (Yahzi @ Mar 15 2013, 05:22) So dou...   Mar 15 2013, 20:28
|- - Porcus   QUOTE (Yahzi @ Mar 15 2013, 10:22) So dou...   Mar 15 2013, 23:31
|- - krabapple   QUOTE (Yahzi @ Mar 15 2013, 05:22) So dou...   Mar 16 2013, 05:38
- - Yahzi   I was just being curious and sometimes curiosity g...   Mar 25 2013, 17:30
|- - Arnold B. Krueger   QUOTE (Yahzi @ Mar 25 2013, 12:30) I was ...   Mar 25 2013, 20:07
- - Yahzi   Thanks Arnold. Are there any other books or studie...   Mar 25 2013, 20:11
- - krabapple   see this thread http://www.hydrogenaudio.org/foru...   Mar 26 2013, 19:03
- - Yahzi   Yeah I saw the thread but I see a dozen different ...   Mar 26 2013, 20:47
- - Yahzi   Is the type of auditory memory comparing two sound...   Mar 27 2013, 10:38
- - Arnold B. Krueger   QUOTE (Yahzi @ Mar 27 2013, 05:38) Is the...   Mar 27 2013, 15:54
- - Jplus   QUOTE (Arnold B. Krueger @ Mar 27 2013, 16...   Apr 6 2013, 11:07
- - Porcus   QUOTE (Jplus @ Apr 6 2013, 12:07) Fun fac...   Apr 6 2013, 11:30
- - Kees de Visser   QUOTE (Jplus @ Apr 6 2013, 11:07) Fun fac...   Apr 6 2013, 13:43


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