nightcat23
New Member
I have a yamaha cr 420 and decided to do some dc offset measurements as per this:
http://audiokarma.org/forums/index.php?threads/amplifier-distortion-dc-offset-and-you.5634/
I got between 70 - 75 mV DC offset (it wouldn't sit and stay at one number). Both channels were about the same amount. Now, according to that thread, it's not enough to damage my speakers or anything, but I am just worried that its making the sound quality worse.I'm also not sure if it is damaging to the amp or anything like that. I know it can be adjusted on some receivers with a pot, but I already have little knowledge on this stuff and don't feel comfortable doing it. My understanding that this measurement is the amount of dc that's getting to the speakers, but would it effect the record output? headphone jacks? I figure without touching that adjustment pot the only way to reduce the offset is to replace those large capacitors by the transformer, but i'm not sure if that would totally remove it. This receiver is from the late 70's so I figure it being slightly higher really isn't out of the norm. So, what the best thing to do at this point be? just keep using it, and when I do need servicing when something breaks I should mention the dc offset? Maybe i'm just worrying too much. I don't hear distortion and I'm not sure if I would be able to anyways.
http://audiokarma.org/forums/index.php?threads/amplifier-distortion-dc-offset-and-you.5634/
I got between 70 - 75 mV DC offset (it wouldn't sit and stay at one number). Both channels were about the same amount. Now, according to that thread, it's not enough to damage my speakers or anything, but I am just worried that its making the sound quality worse.I'm also not sure if it is damaging to the amp or anything like that. I know it can be adjusted on some receivers with a pot, but I already have little knowledge on this stuff and don't feel comfortable doing it. My understanding that this measurement is the amount of dc that's getting to the speakers, but would it effect the record output? headphone jacks? I figure without touching that adjustment pot the only way to reduce the offset is to replace those large capacitors by the transformer, but i'm not sure if that would totally remove it. This receiver is from the late 70's so I figure it being slightly higher really isn't out of the norm. So, what the best thing to do at this point be? just keep using it, and when I do need servicing when something breaks I should mention the dc offset? Maybe i'm just worrying too much. I don't hear distortion and I'm not sure if I would be able to anyways.