I am referring to the LARGE BYBEE that costs slightly more than the Slipstream, BUT there is a clear picture by some independent party as to the resistor brand, type, and part number on this thread, and others. Of course the 'Slipstream' has a smaller resistor, and it will have less power dissipation, BUT nobody has opened a 'Slipstream' and given us its resistor brand, type and part number. Therefore, all criticisms and predictions are without evidence. However the LARGE BYBEE uses a very interesting, (and expensive) resistor, and maybe the smaller part uses a similar quality resistor. You don't have to believe me, find out for yourself.
Bybee specifies the big gun at some 15A.
With all the insulation works, that requires a large caliber resistor.
With all the insulation works, that requires a large caliber resistor.
As an engineer, I would think that it would be good to use the most efficient resistor, at least for a given size, power wise, would be best. Admittedly, the full 25 watts over time would be a real strain in the small package, but for short periods of real stress, the leads should take much of the heat away.
I'd like to kindly request that when some testing is done the first post of this thread be edited to link to the results. It's tough to filter through this trying to figure out if anything has actually been done.
Poptart, testing is going to be limited, because the devices only measure as resistors, as I have stated for years. Open listening is the only real test that shows any real difference, and exotic tests, such as Jack Bybee did 15 years ago, will be disputed by people here, without actually trying to test in the same way, themselves. That's life! ;-)
Very true. This happens with most of the interesting threads here. Beyond The Ariel has a huge amount of good info, but finding it... fuhgeddaboudit.
Doesn't military gear run on 400Hz to save weight? Those tests were done at 60Hz.
They often do in airplanes. Likely elsewhere too. Someone here will know. I used to have a motor-generator that turned 120V-60Hz into 220V 400Hz. Military surplus.
So, these devices (or ones substantially similar) are sold to the military with no backup data, no evidence of efficacy, no specs of operation? Pardon me if I find that impossible to believe. FWIW, my limited preliminary data are indeed consistent with what you're saying, they measure no differently than a resistor. But we'll see if they comport with Bybee's claims of noise reduction, higher electron velocities, reduced transit time, and elimination of "intermodulation" from ripple current waveforms.
Either these change the electrical signal or they don't. If they don't and can't be detected in an audio system without peeking, then what they are is what you say- low value resistors, but with a $100 price tag.
SY, will your tests be only scientific measurements? Or will you also try to see if you can detect a change in sound?
P.S. Sorry if you have already mentioned this, but, although I tried to keep up with the thread, it's possible I missed part of it.
P.S. Sorry if you have already mentioned this, but, although I tried to keep up with the thread, it's possible I missed part of it.
This is where I get off.
After a career (I am 66) dealing with gov, com and mil in electronics test - the idea that these devices are so mil spec vital but somewhow JB sneaked them through into - wait for it - a tiny, TINY part of the electronics market, ie Audio without any comeback is so, so ,so total **! that it makes me so angry!
And there is JC, whose work and designs I so admire who lays back with his legs open. B***dy shame John - you could have done so much better.
My reported tests will only be measurements. Out of personal curiosity, I put these in the + side of the midrange/tweeter feed of my speakers, then in both sides of the AC feed to my midrange/treble power amp and did some comparative listening, but I'm not reporting that one way or the other, since I didn't set up a reliable means of testing the extraordinary claims of audible differences.
The test was done at Ames Research Center, I was told, ever hear of them? They probably use 60 Hz, like the rest of us.
Told by whom?
Where's the report (these things do get published, you know, and I have a former senior scientist from Ames and Langley working for me these days)? I also used 60 Hz, but that's because I don't live on a B-29.
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