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Posts by wakibaki

A tube amp is very attractive in some ways, but it's hard to get off the ground. You need transformers, tubes, it's dangerous, expensive.   You can experiment with solid state amplifiers for virtually zero cost. You can scrounge PSUs and high power transistors from scrap, although many components are cheaply available internationally. You can run from batteries. You can run speakers direct, no output transformer. You're unlikely to hurt yourself, other than maybe a...
Subjectivist thinking is flawed.   Subjectivist arguments always depend on a misrepresentation.   If a scientist is worth his salt he will defeat a subjectivist on a level playing field.   In order to maintain a subjectivist outlook a disorganized personality is required. A inconsistent world view is to be anticipated. This is likely to afford opportunities to discombobulate the opponent.   When the ideas of subjectivism were first mooted, more conventional...
You could measure the voltage across them and calculate what they are outputting. This would assume that everything output is coupled to your eardrums, but this should be the case with IEMs. You also have to depend on the manufacturer's spec being accurate.   The easiest way to see what is going on is to look at the signal across the phones with an oscilloscope. Just insert a splitter and a jack with exposed contacts. Then you can see peak values, estimate average...
 Jealousy will get you nowhere.
OK, here we have a digital master.   Shall we put it straight onto a CD or record it onto vinyl and then re-record the vinyl?   No, we should put every track on a 45 and play it over AM radio and then re-record it.   Just how stupid do I have to make the examples before you stop laughing and allow your face to go red?
 Short answer, yes, its not erratic. It depends primarily on the input impedance of the IEM. Most transducers input impedance varies with frequency. The amplifier output splits between the amplifier internal impedance and the headphone impedance, so different fractions appear at different frequencies. This manifests itself as a variation in output amplitude when a swept tone is input. The variation in voltage seen by the headphone is minimised when the amplifier impedance...
 Yes, this is what I find puzzling. Where I live there's a big issue over energy prices. Gas, electricity. The wholesale gas price goes up, the price to the consumer goes up, the wholesale gas price comes down, the price to the consumer stays the same. Except people kicked up so much they got the government to force the energy companies to reluctantly reduce their prices, after quite a delay of course. In the meantime the energy companies have such a plethora of pricing...
 I don't like the frequency response. It's 40-15000Hz for a start, when I'd prefer to see 20-20,000. If these are the manufacturers figures, I suspect the flatness is a lot worse for the extended range. With 32 ohms, a -1.66 dB dip is quite noticeable. 0.1 dB is a perceptible difference. I looked up the output impedance, 2 ohms. This is at the very top end of acceptable and values of a fraction of an ohm are achievable. You can see the sensitivity to load in the difference...
 So what? I've heard hundreds of CDs that were far better than any vinyl. Put quite simply, a CD presented with the same program material as was presented to the vinyl will be less likely to suffer problems than any re-recording via vinyl. This is a simple audiophile principle 'the less components or processing in the signal path the better.' So you should always try to buy a digital copy first, unless you have access to information about how the recording was made.
 So you and this person are going to achieve an unbiased result? Don't even bother. Just lie, it'll be a lot less trouble.
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