> pecked to death by a duck
Better to be pecked to death by a duck
Than to be ducked to death by a peck !
Better to be pecked to death by a duck
Than to be ducked to death by a peck !
If someone is getting a NEW set of JC-1 amps, take care that you break them in for a number of hours, before final audition. Sorry about that.
They are brand new and break in is par for the course ... 🙂 Parasound Halo JC 1 monoblock power amplifier Measurements | Stereophile.com
Hey look it passed the FTC , pre-conditioning ... 🙂
Hey look it passed the FTC , pre-conditioning ... 🙂
John, I meant to ask you: What is your take on AC power cords, power conditioners, high quality/geometry material cables,
and under audio components/loudspeakers anti-vibration devices?
Can they further improve your fantastically sounding designed products?
...Like by a truly valuable margin?
And last; if so, why is that that great audio designers like yourself aren't exploring those 'sound' values more?
and under audio components/loudspeakers anti-vibration devices?
Can they further improve your fantastically sounding designed products?
...Like by a truly valuable margin?
And last; if so, why is that that great audio designers like yourself aren't exploring those 'sound' values more?
Oh, I take advantages of power conditioners, AC power cords, and exotic cables, but I just don't talk about them on this website. Too controversial.
Heard an eagle 7A recently , John , what can you tell me about that other John, Electron Kinetics ...
The stories are legendary ....
🙂
The stories are legendary ....
🙂
Recently I have used a square wave generator for breaking in the newly assembled amp - the procedure was even more efficient than using the white noise signal. I used 5 Ohms 150W wire resistors as a load, 100kHz square wave, 70...80% of max output power, 24 hours time period.
After the procedure one could state, that something magician has happened to the sound, but actually it is not more than plain materials science. Various approaches of annealing materials imperfections, important for electrical and mechanical properties, by using heating, alternating currents, ultra-sound etc., are known for decades. Some effects are even listenable, output trafos of tube amps, if produced some mechanical noise at the beginning, become more and more quiet during the breaking in. Similar observations could be found with big electrolytic caps. Film caps could benefit from some annealing of imperfections in metal films or foils.
One should not expect, that any parts manufacturer will break in new parts during days, so this comes to diyers duties. Some diyers (not me) even break in every passive part before its soldering to the amp. The less boutiqe parts are used in the amp - the more effect is achievable by the breaking-in.
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a.wayne, Iverson was one of the most brilliant designers I have ever met. Unfortunately, he went missing about 20 years ago.
John, I mentioned the special breaking-in procedure just for those, who plan to use ordinary listening for breaking-in. In the last case, one could loose several months, and finally could not be able to listen final sound. This is very usual with majority of customers. On the other hand, not much people really need sound improvements.
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I use the first generation burn-in CD from these guys on a regular basis:
Purist Audio Design
Seems to be working, at least for me. YMMV..
This is a controversial topic. I have never experienced any necessity of amplifier burn-in, except for thermally unstable designs that needed long time to settle for operating points. But it was not a burn-in, but time to heat up.
We attribute much of 'burn-in' to exotic caps. In my experience, virtually every wire and piece of equipment needs some 'burn-in'.
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