amp problem

tommyboy
tommyboy Posts: 1,414
edited November 2006 in Troubleshooting
I posted this in the electronics but it wasn't getting any views so I am posting it here too

hey,

I just purchased the Acurus 125x5 from Early b a couple days ago and just got it in today(thanks for the quick transaction Early). The amp didn't come with a owners manual but thats ok cause I got you guys ...

anyways, for now I'm just using cheap analog cables for just the two fronts until I get my better quality cables for all channels. I also was so surprised how small the hole was for speaker wire I have 14 guage wire, you can prolly barely fit 18 guage speaker wire. This pretty much forces you to buy banana plugs...

Ok, now to the real problem, when I turn the amp and the reciever on, I hear a loud...sound(I can't really explain it, )... Its not a hissing sound... anyways, I was about to contact early B about the possibility of something wrong with the amp, but then I unplugged the analog cables and the sound was gone. At least to me, that means that there is nothing wrong from amp to speakers, but from amp to reciever. I checked the connections and everything is running where its supposed to... Does anyone know if there is something I need to do with the reciever so it knows to use the pre-outs?

I'm thinking I just need to do something with my avr but I dunno...

Thanks
Tommyboy
__________________
AVR: H/K AVR240
Fronts: Monitor 50s
Center: CSI3
surrounds: R15s
Sub:Velodyne DPS10
Dvd/Cd: Samsung HD upconverter (for now)
TV: 50" Sammy Plasma
game hardware: 360 and gcn.
Gamertag: kovster27
Post edited by tommyboy on
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Comments

  • ntculenuff
    ntculenuff Posts: 1,146
    edited November 2006
    could just be the cables ??
    had a humming sound going to one of my subs and after alot of trouble shooting and frustration a new cable fixed it right up
    Speakers:
    Definitive BP7001sc mains
    Definitive C/L/R 3000 center
    Polk RT800i's rears
    Definitive supercube I Sub
    Audio:
    Onkyo TX-NR3010
    Emotiva XPA five Gen 3
    OPPO BDP-103 CD, SACD, DVD-A
    Video:
    Panasonic TC-P65ZT60
    OPPO BDP-103 Bluray
    Directv x's 2
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  • Systems
    Systems Posts: 14,873
    edited November 2006
    If it is a hum you may a ground loop or just have a cable with a bad ground connection on one of the RCA's.Are you getting the hum from all the channels or just one?
    Testing
    Testing
    Testing
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  • danger boy
    danger boy Posts: 15,722
    edited November 2006
    try different and better RCA interconnect cables.. you shouldn't have to do anything with your AVR other than plug the cables from the pre outs to your amp.

    is it a "pop" sound when it first comes on? or once it comes on, it's a hiss or static or buzz?
    PolkFest 2012, who's going>?
    Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
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  • tommyboy
    tommyboy Posts: 1,414
    edited November 2006
    GV#27 wrote:
    If it is a hum you may a ground loop or just have a cable with a bad ground connection on one of the RCA's.Are you getting the hum from all the channels or just one?

    Its both, whenever I just plug in one, the hum just comes from that speaker. Plug in both, I hear the same hum from both.
    AVR: H/K AVR240
    Fronts: Monitor 50s
    Center: CSI3
    surrounds: R15s
    Sub:Velodyne DPS10
    Dvd/Cd: Samsung HD upconverter (for now)
    TV: 50" Sammy Plasma
    game hardware: 360 and gcn.
    Gamertag: kovster27
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  • Systems
    Systems Posts: 14,873
    edited November 2006
    It sounds like a classic ground loop.Check the back panel on the amp and see if there is a switch that is labeled Ground lift or similar.If it does try switching it and see if it helps matters.
    Testing
    Testing
    Testing
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