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Posts by arnyk

I have a general problem with the J-Test as there is AFAIK no obvious way to infer its relationship with audibility other than listening tests. Its developer (regrettably now deceased) never seems to have tried to do so, or indeed do any reliable listening tests of his own to back up any of his claims.Notice that Amir criticized my J-test data because my test signal had an amplitude of...
Acoustic feedback.(1) Improve the isolation between the TT and the subwoofer which may require acoustic or mechanical isolation. Sometimes closing the cover on the TT can help..(2) Simply add an switchable electrical high pass filter, probably between the preamp and the power amp.A useful alternative would be found on this page in the form of an Harrison FMOD:http://www.parts-express.com/cat/in-line-crossovers/405You want the lowest frequency rated item that is still...
Along these lines I see three kinds of high end product:(1) Overpriced floobydust. Your choice of firehose-sized, fluid-filled, electrically-charged cables and other pseudo technology at outlandish prices.(2) Products that are based on very new technology and carry the first adopter tax. IMO OLED is vying for this prize these days.(3) Products that are based on inherently expensive technology with potential or demonstrated capability for exceptionally high performance....
It is a trick question with hidden dependencies. Obviously my answer will be stated to be wrong no matter what, so I simply decline to answer.
Most such claims are based on sighted evaluations with few if any controls, so they are mystery meat. So much of what people say seems to follow advice that amounts to being a sales pitch for a certain component. Go figure!
There have been numerous occasions where we have been displeased with the results of certain DBTs, addressed one or more of the issues that I mentioned, and then obtained significantly better results.We did a lot of testing with the systems belonging to a proponent of a certain audible difference (e.g. cartridges) and found the host's system to be deficient. We then brought in components of our own to obtain successful results after failing. We generally did a site survey...
Release date is said by Amazon to be 1985. I have it and yes it still sounds great.
Yup, not even $40,000 test sets can create or process clean digital signals at +10dB FS!Whoops! ;-)
I'm not trying to convince you of anything, partially because of the natural limitations of long-distance technical consulting of topics like this.However you may be onto something. In my room my LCR speakers are located so they have considerable acoustic gain at low frequencies (below 200 Hz) Flattening their response out with Audyssey or regular graphic eq not only improves SQ at modest SPLs, it measurably increases peak SPL that is possible without distortion.
Room Eq Wizard, Holme Impulse, Even the acoustic measurement feature of The Audio Rightmark.IME the pay-for software can be better, but when you are learning and even after that, these freeware products can help people be highly productive. The first part of the learning curve is often dominated by learning the mechanics of measuring and taking actions with anything that works, while later on you may develop a clear understanding of why you need something better.When you...
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