| Author | Message | ||
     John Lynch |
Does anyone know what position the ground switch should be switched to on a 112-RP-65. Or what it's for. Thanks. | ||
| John D. |
Either of the two positions is OK...set it to the one that eliminates a hum if there is one (this is caused by out of phase grounds in series, say two or three amps running off the same circuit and they need to all be "on the same page" ground wise. The switch lets you pick the correct ground phase if the amp is in series with other grounded pieces of equipment that are on the same line. At least, that is how it was explained to me. Hope it helps. | ||
| Lynch1j2 |
Great. Thanks for your help. | ||
| Chris Haines (chris) Username: chris Registered: 02-2008 |
Since I'm using my 410 HD130 (older PI version) a lot now I'm trying to read up on and understand the amp's two position ground switch as best I can. The above posts help but I still need some clarification. I can't read a schematic and have a hazy incomplete understanding of the basics so please bare with me. -Since using the three prong plug prevents me from plugging in backwards (as long as the house wiring is not backwards) does one of the positions of the ground switch create a greater potential for getting shocked than the other position? Why or why not? Your answer may go over head but I might glean some new understanding from it. Thanks... | ||
| Mike Kaus (mm210) Username: mm210 Registered: 05-2006 |
Like you said, it depends on the bulding wiring. It alters the "hot" side of the amps input wiring. There is not cut in stone version. You have to do it the old fashioned way. Try it and see if you get bit and then flip it. I usually try the mic just before we go on but I've taken the ground switch out of MY gigging amp and if I'm gettin a little taste, I switch mics to a 57. Mike. | ||
| Chris Haines (chris) Username: chris Registered: 02-2008 |
Thanks Mike. Does it follow then that if I had a volt meter and put one probe on my guitar strings and the other to a ground that it might read 120 volts or if it didn't I could flip the ground switch and get it to read 120 volts? |