Yamaha DTXpress/DTXplorer/DTXtreme

--- In DTXpress@yahoogroups.com, john@... wrote:
>
> Hi ppl
> 
> At band practice last night, the 'sound man' was saying that he got a
> buzz ing sound from my kit, but not from anything else. If my
> Behringer amp was inbetween the kit and the PA, there was no buzz. So
> he said that new, digital equipment isn't earthed properly.
> 
> Does he have a point, and if so, what can I do about it?
>

J,

Earth, what earth!  Devices which use wall power supplies usually
don't have earths - this includes the DTXpress.  I am no expert in
this area but differential signals are often used to eliminate earth
loops, hum and pickup problems.  Something like this
http://www.behringer.com/DI20/index.cfm?lang=ENG to link your DTXpress
to the PA may be of use if the PA can accept a differential input. 
Before you spend any money though, it may be worth getting some advice
from someone who knows about such things.  The local music shop may be
able to help and sell DI boxes.  

Keith.