
Why does it conduct to the ground line? Because the part of the surge protector that absorbs the over voltage BURNS OUT after absorbing a few surges. It (a) absorbs as much of the jolt as it can while it (b) conducts electricity to the GROUND LINE. When this trigger over voltage is reached (300V for example), the powerstrip does 2 things. On these suppressors, there is a trigger called the CLAMPING VOLTAGE. This is the kind of surge protection that is built into nicer powerstrips, UPS, and rack mount voltage regulators like a Juice Goose. Unless you have an elaborate and expensive floating ground system (sometimes the cost of these systems CAN be justified if you have an older house with 2-prong ungrounded outlets), you probably have a transient voltage surge suppressor. View image here: - Not that here too! What do you mean by "many cases" and "useless"? I'm not aware of any application in which a surge protector would be totally useless just because the ground wire isn't connected. In many cases lifting the ground makes your surge protection useless. Or a high quality Line Isolation Box like the Palmer PLI-03. I keep a set of these in my gig bag, because you never know where a ground loop is going to pop up (and being stuck with noisy kit in a club would really suck).įor those who want better quality OR people with better mixers that have XLR outputs, you might consider a direct box like the Behringer DI-100. But you'll want to move them around to different places (like the TT ins/outs) and see where you get the best results. I recommend trying them on the outputs of your DJ mixer for starters, as that seems to be where people have the best results. If I were you, I would get at least one of these as well in case you need to reverse the sex of the connector (to use with a hardwired turntable for instance). If you get one specifically for audio, you should be fine. Some people will tell you they color the sound, and that is a possibility. These work well, but are really the lowest form of GLI suitable for audio.

There are many different kinds, but most of the ones you'll come across will resemble this one. A better solution is to get some kind of Ground Loop Isolator (GLI). It's unsafe, and in many cases lifting the ground makes your surge protection useless. Lifting the power ground is not an ideal solution. If you're in America and are running TFS on a desktop, try using a 3-to-2 prong adapter on the power cord of your computer. If the noise goes away when you unplug your laptop, that's a pretty good sign it's a ground loop. These can sound different, ranging from a simple buzz in the audio to a rhythmic thump and tone. I get a weird noise when I hook up the Scratchamp.Ī common problem with the Scratchamp is the creation of ground loops. I wrote this little guide for a FAQ for Traktor/Stanton Final Scratch.
