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- Newsgroups: rec.audio
- Path: sparky!uunet!destroyer!news.iastate.edu!pv7426.vincent.iastate.edu!palane
- From: palane@iastate.edu (Paul A. Lane)
- Subject: Re: Very expensive cables
- Message-ID: <palane.716574820@pv7426.vincent.iastate.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- References: <37994@sdcc12.ucsd.edu> <1992Sep14.171039.817@csc.canterbury.ac.nz> <19197kINNh6@uniwa.uwa.edu.au> <palane.716490350@pv7426.vincent.iastate.edu> <193egnINNrjf@uniwa.uwa.edu.au>
- Date: Tue, 15 Sep 1992 16:33:40 GMT
- Lines: 51
-
- In <193egnINNrjf@uniwa.uwa.edu.au> scott@psy.uwa.oz.au (Scott Fisher) writes:
-
- >palane@iastate.edu (Paul A. Lane) writes:
-
- >>My personal preference (which I think would satisfy both camps) would
- >>be extended black box listening. If long-time listening will bring out
- >>differences between (for example) different amplifiers, take a Pioneer
- >>amp and put it in a black box with a brick and a Mark Levinson (or your
- >>favorite ultra-expensive amp). The listener does not hook the amps up
- >>and level matching should be unnecessary (the listener still can adjust
- >>volume). Run a trial over several weeks with half the critics getting
- >>cheapos and half the critics getting ultras.
-
- >This would be known as a "between" subjects design and would probably
- >(in this case) be better to do a "within" subjects design (where each
- >reviewer listens to all the amps, cables, speakers etc, under review) just
- >give the critic "2, 3 or 20" black boxes...then what you have is simply a
- >"double blind experiment" where 1 trial takes about a month.
-
- I agree with you that a "within" subjects design would be more accurate
- for determining differences, though more time consuming for the individual
- reviewer. However, if differences are minimal, some reviewers would be
- giving Pioneer amps glowing reviews and trashing Levinson. With a relatively
- small sample, one should find out if the claimed differences between equip-
- ment are observable under extended conditions.
-
- >To make things really interesting give them 6 black boxes for a month, have
- >three amps (pairs of each) in there "somewhere" and get the reviewer to not
- >only write a review for each box but also tell you which boxes contained the
- >"same" amps....to make things "really" interesting, don't tell the reviewer
- >that there are only 3 different amps in the 6 boxes :-)
-
- The main point of my suggested procedure is to remove pressure from the
- reviewer. Don't require comparisons or trying to find out which amps are
- the same and which are different. I could see the same claims made about
- the uselessness of AB comparisons being made here (pressure, etc.) I rather
- like the idea of taking an amp to someone who claims to here substantial
- differences and asking them to use it for a month (possibly comparing it
- with their reference) and say what they think. It could be rather illum-
- inating.
-
- Alas, I'm afraid that manufacturers, magazines, and consumers' egos have too
- much to lose for this to be pulled off.
-
- >Tasks for the subjects could be writing extended, subjective reviews, simply
- >saying "same, different", "better, worse", etc etc...
-
- >Regards Scott.
-
-
- Paul
-