Rerurn to Romy the Cat's Site


In the Forum: Audio Discussions
In the Thread: SET amplifiers
Post Subject: A great field-coil misconception.Posted by Romy the Cat on: 12/15/2014
fiogf49gjkf0d
 Paul S wrote:
Meanwhile, I was thinking about field coil drivers, not to introduce a new topic but to re-consider the driver itself as "tune-able", at least with respect to the gap. 

Not willing to much to hijack the thread but I need to note a notion that field-coil is tunable configuration is very faulty. I know that tenability of field-coil is hugely popular out there but only among the people who ether never had it, or have no brain, or have no ears. For a given magnetic system there is always the optimum saturation point and this is on one way or another sniggle point. if you use low voltage field-coil and saturate the code with current then you have sluggish and unsophisticated upper end. Can you correct it with overly idle DSET with super fast core? The answer is most certainly not. I am sure if one eats drinks a diarrhea and then eats a greatly made creme-brulee then he might claim a great meal. I do not think it would be however. The key is the individual elements shall be operating on own individual best and then those individual elements all need to be engaged in a larger performing picture where individual best would be multiplied and summed but not divided and subtracted.

I know there are many people out there that consider that field-coil are "adjustable". I even saw an idiot who advised volume control with field-coil on the drivers. Did I mention that the idiot was TAS reviewer? It was almost predictable, isn't it? The reality is that if a good field-coil driver is made then it is locked in own voltage, current, saturation and any deviation from it is a compromise of the driver. If there is a way to improve the driver by the adjusting anything then the best operation parameter for the driver has not been yet discovered. Otherwise it is as stupid as to experimenting with a DSET loading knowing that you use a discharged perm magnet driver….

Rerurn to Romy the Cat's Site