吉他行者
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发表于 2010-5-4 23:25:24
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额If you read through the patent description on the uspto site, it will tell you exactly how to make the thing. It has nothing to do with the amp, you can use any amp design, the problem with the design is the magnetic driver. Fernandes figured out you cannot make just any old driver work, ie, 'the forum' says use a certain mm wire wrapped about 150-170 turns to make an 8 ohm coil, but that is an extremely simplistic design and will not create a driver that will work like the Fernandes sustainer. Fernandes describes that you need a rail pickup, not individual pole pieces like a typical Strat pickup. The rail is then cut partially, in a fan shape, creating 6 variable width 'poles', each 'pole' is a different size for each string. They later refined this to have three rail pieces of varying thickness for each string, all in parallel. Fernandes figured out that each string needs a certain amount of magnetic flux to get that string working, and no single pole size works optimally for all strings. Look over the patent description, read through the thing, and it will tell you exactly how to make the driver correctly, the simplistic 'forum' driver has not addressed any of the problems that the patent describes.
网上有Fernandes的专利文件,想搞这些的人真应该好好学英文。以前也见过sustainc的部分专利文件.
如果能在一把吉他上得到相对可接受的效果,在另一把吉他上出不来,这个时候是不是应该把原因弄清楚再向前走。原厂的也不是接什么琴都可以的,要求那个bridge pickup输出足够大。
很多人应不知道,最近出了很贵的moog吉他,应该是用piezo 得到信号然后驱动。也是无限延音的效果.应该是有6个驱动器对应每一条弦.
其实真正玩过Fernandes/sustainc 的,能有20% 的人喜欢就不错了.
有很多低科技的东西都不难山寨出徕, 但属于小众的产品, 没有量, 没人做.
[ 本帖最后由 NMJTX 于 2010-5-4 23:48 编辑 ] |
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