fsrenduro

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  1. Hum/buzz with XLS 202b

    I have tried unplugging my cable from my system and nothing changed. I do also have light dimmers that I think are on the same circuit. I've checked the system with these lights off and it doesn't seem to change anything. In terms of three prong vs. two prong… I had a 7 channel home theater amp (400 wpc into 4 ohm) that was three prong hooked into this exact same system and it was dead silent. At almost $3k it was too much for me to justify the cost so that's why I thought I'd try pro amps. If this amp didn't buzz or hum it doesn't seem like I'd need several hundred dollars more of a product to clean my power (although I could be wrong). I'm gonna give the Radio Shack thing a try. The grounding of my two pronged receiver seems like a good idea but I'm not gonna mess with plugging bare wires into any outlets. Thanks for the suggestions so far.
  2. Hum/buzz with XLS 202b

    The Rolls Buzz Off did not work either. Does anyone have any other ideas. It seems as though the products I've tried are for hooking fixed output units (CD players, etc) to mixers. Since my pre-outs on my receiver are variable (volume controlled) maybe this messes stuff up. Although raising the volume does NOT raise the hum. I saw an amp from Gemsound that has an input sensitivity switch (1, 1.5, 7 volts). Would that be something that might help. My guess now is that it is the differences in sensitivity between pro & consumer level. I tried an ART Cleanbox and it did nothing for the hum/buzz I'm getting. It did however raise the noise floor quite a bit so even if it had removed the hum it wouldn't have been the answer. Just by adding the Cleanbox to the equation and having it potted all the way down the noise floor was easily audible. Any other ideas. I'm going to try a Rolls Buzz Off next. I was hoping this amp hook up would be dead silent like the home theater amp I had before. Am I wrong in thinking that is possible with pro amps? 2418[/snapback]
  3. Hum/buzz with XLS 202b

    I tried an ART Cleanbox and it did nothing for the hum/buzz I'm getting. It did however raise the noise floor quite a bit so even if it had removed the hum it wouldn't have been the answer. Just by adding the Cleanbox to the equation and having it potted all the way down the noise floor was easily audible. Any other ideas. I'm going to try a Rolls Buzz Off next. I was hoping this amp hook up would be dead silent like the home theater amp I had before. Am I wrong in thinking that is possible with pro amps?
  4. I have an XLS-202b in a home theater hookup. It is powering two 4-ohm towers and sounds very good. I have a Hosa RCA to XLR cable running from my receiver (Pioneer 815 k) to the amp. With the volume on the receiver all the way down I can hear a slight hum/buzz type sound coming from the speakers. If I unhook the RCA end from my receiver the sound goes away. If I touch the end of the RCA cable with my finger while it is unhooked the hum is louder. Since I also have an Onkyo amp hooked up to the receiver with NO hum I'm wondering how to get rid of the hum in the Crown. I'm guessing it is some kind of grounding issue but what do I ground. Nothing else that is hooked to my receiver hums (subwoofer, other amp). If it were the Hosa cable wouldn't it hum even when not hooked to the receiver? Any ideas?