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发表于 2009-12-10 01:38:57
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这个正解,那开关是要不要把DI的地和mixer的地连起来的开关,有时候如果有mains hum问题,就要lift起来,这样mixer地和DI地分离了。
中频按钮时选择EQ增益/衰减的中心频率的,这是所谓的parametric EQ.
这些技术概念可以找本录音工程的书,里面有详细解释。
现把sansamp的说明照抄如下:
PHANTOM & GROUND CONNECT SWITCH: When engaged (depressed), the ground connects
and unit will accept phantom power through the XLR Output. Disengaged (up), the ground of your stage
system and other interconnected gear is lifted/isolated from the ground of the mixing console.
With a mixer only: If you are plugging your bass into the Bass Driver and taking the XLR Output to a
mixer --and do not have any other grounded equipment connected in the setup-- you will have to
engage (depress) the switch to connect the ground and activate the phantom power.
With a mixer and bass amp: If you are going to the mixer via the XLR and using the 1/4” Output to feed
a bass amp (with its own AC ground), you should set the switch in the up position for “Ground Lift” mode. If
you experience hum and/or buzz with the switch in either position, there is probably a problem with the AC
outlets you are plugging into.
NOTE: If using vintage equipment without proper grounds, take extra care connecting it to modern
grounded equipment.The inadequacies of the ground in vintage gear could result in damaging anything it is
connected to.
NOTE: While operating under phantom power, we recommend keeping a 9V alkaline battery installed at all
times to avoid the previously mentioned “pops” when lifting the ground (see above).
原帖由 chrispy 于 2009-12-10 00:28 发表
前几天 打婚礼表演
终于 用到了 Ground/Lift 钮
本来有 humming
不知道 那里有问题
结果 lift 了过后就没问题了
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