|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
150.148.14.6
In Reply to: RE: Agreed, Fender... Indeed... The Lippincott Manual of Nursing states... posted by Cleantimestream on September 13, 2016 at 19:06:42
so neither the investigator nor the subject knows which is placebo and which is the good stuff. (I don't wish to dredge up the old arguments on the subject of double-blind testing of audio equipment. It's a good idea, if practical, but it is not usually practical.) I'm just pointing out that the concept has an important place in scientific methods.
Follow Ups:
LOL...while it would be useful, to go and get two sets of output Iron, and power/filter iron just so I can build two identical amps and double blind test some resistor/capacitor/grid choke... It is rather impractical.
This impracticality gives rise to placebo-ists who claim one must use 4.3 runs of some specific colour and manufacturer wire between the 100kOhm plate load and the 12AX7's plate in order to get a properly 'efficient transfer' of musical energy so a 2A3 can put out power that sounds like it is coming from an amp with two orders of magnitude more power.
One test I like involves leaving the system alone for a bit, and then come back and listen. And have other folks drop in for a listen. Dropping in on a system 'cold' will give you the, 'it needs work', or, 'I like it much' response...:)
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
What I do is to listen to the system with the new device for at least several weeks and then go back to the "before" condition for several more weeks. And ideally, you (or I) should go back to the new device, to see if you (or I) still love it so much or so little. But in practice, I am lazy. Seat of the pants rules. Which is why I am loathe to trumpet my conclusions. My data are usually bad. Thus I sometimes marvel at the degree of certainty about anything, often seen here.
Edits: 09/26/16
I have observed a lot of 'bad' data myself. I have seen a few good results, and my most certain confirmation comes from other sets of ears, preferably on an absolutely 'cold' basis...either they like it or not.
I'll try and stick to building what I like to listen to...:) The basis of a good amp has always started with good engineering.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: