godgrinder 发表于 2018-5-17 10:04
2525和2555失真是靠晶体管元件,类似音箱里内置个失真单块。
晨曦XP 发表于 2018-5-17 14:11
还有这种操作?真的吗 听那声音感觉很电子管啊,我去~这箱子资料网上也比较少,得搜搜英文网站看下 ...
godgrinder 发表于 2018-5-17 10:16
在80年代末/90年代初这算是个比较常见的操作,马勺其他一些型号像2210、4100也是这样的。 ...
As you mentioned, the preamp OD in a Jube is most certainly created by a combination LED's and diodes. THere is a network of Two 3mm red LEDS's and 3 1N4007 silicon Diodes arranged to create asymetrical clipping (like in many OD pedals). This network is placed between gain stages 2 and 3 and essentially clips the peaks off the waveform. THere is a small capacitor across the whole network that rounds the edges of the waveform to better emulate tube clipping.
The rhythm clip circuit is a pair of parallel 1N4007 diodes arranged to symetrically clip the waveform, but at a much lesser degree than the other network.
Here's an interesting point, if you remove the clipping stage from a jubilee (I have done this) it's actually a clean amp with no preamp gain at all. The whole design is focussed around that network and all of it's preamp OD comes from those solid state devices. Still if you have a good one, it is a fantastic sounding and feeling amp.
diamondsandrust 发表于 2018-7-31 10:56
吵什么吵,1年没上GC了。哈哈
Jubilee系列我三个都有,为啥,图方便,plug and play,那出来的声音很正。什 ...
godgrinder 发表于 2018-5-17 10:04
2525和2555失真是靠晶体管元件,类似音箱里内置个失真单块。
皱眉 发表于 2019-5-14 02:54
JVM410也是带晶体管是真吧,不带晶体管失真度不可能那么大
godgrinder 发表于 2019-5-14 20:07
JVM是全电子管信号通路,只要电子管够多,做到全管hi gain没问题。JUBILEE以及JCM900用晶体管失真主要是 ...
godgrinder 发表于 2019-5-14 20:07
JVM是全电子管信号通路,只要电子管够多,做到全管hi gain没问题。JUBILEE以及JCM900用晶体管失真主要是 ...
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