hum, please, please help
As an addendum to the excellent advice Mark gave you; an alternative would be to have an electrician install a dedicated circuit(s) with an isolated/dedicated ground. This would certainly be a minor expense compared to the cost of your system. I didn't know what star grounding was, but found a good post on that subject as it applies to an amplifier. It also gives some insight into the hum problem with audio gear and household circuitry. Thanks for that, Mark. Marco |
Some good advice from others. A few other things to think of and check. So your saying that you are lifting the grounds all all your pieces of equipment and you still get a hum ? Are they all plugged into the same outlet ? I do suggest lifting grounds. If your wanting to ground your equipment for fear of electrical shock from a electrical storm I have found the preamp to be the best piece to ground. With the preamp grounded all components share the ground plain. If you do put in dedicated circuits make sure that if you put more than one that they are on the same side of your electrical panel. You have 220 coming in to your home and then it is split at the panel and each side of the panel is out of phase with the other that can cause and will cause a hum. Also how are your circuits grounded if your using a ground ? you might play along with the grounding circuit of that line. Some like using a copper buss bar pounded into the ground. I have also had good results grounding to water pipes in the home. Try lifting all grounds first, then just the preamp and all plugged into one outlet. I have also had issues were other house appliances were running like refrigerators etc. If you have tubes it could be a bad tube as well. There are a few things to try and if that doesnt work feel free to email me at hmmmisthatright@yahoo.com Kevin |
