powerinnumbers Posted November 28, 2018 Share Posted November 28, 2018 Hi Guys I am using a pre-pro and a Yamaha AV receiver to power 5 channles. Which unit should be used for controlling the volume ( I am presuming the pre-pro ) and that's how I have always done it. Besides I don't want to use the remote for the old Yamaha amp to control volume. So the way I have it is default volume level 40/100 on the pre-pro and -1db on the Yamaha amp ( that's pretty much full power ). Is this a normal way to setup? Or should I use only 50-75% power on the amplifier ? I don't like using the pre-pro at numbers into the 70's and 80's to get to my level though, it's just the way my mind works, feels like it lacks power. The problem I have is introduced noise. When on 5.1 input I get audible low level noise in the speakers. If I turn the pre-pro to OFF the noise goes away. So is this normal when running the amp at -1 db .? It's in all speakers, I don't think there is an issue with the interconnects. Link to comment Share on other sites More sharing options...
Snoopy8 Posted November 28, 2018 Share Posted November 28, 2018 (edited) What are you using as the pre-pro and the AVR? And is it for movies or music, 2 channel or multi channel? ** Also what speakers? Edited November 28, 2018 by Snoopy8 Added ** Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 28, 2018 Author Share Posted November 28, 2018 Pre Pro is Integra DHC 9.9 AVR is Yamaha RX-V1 Movies mostly Link to comment Share on other sites More sharing options...
Snoopy8 Posted November 29, 2018 Share Posted November 29, 2018 If you drop the volume on the RXV1, is the noise still there? Also, try unplugging connections on the Integra, maybe noise coming from one of attached components. FYI, this is posted on wrong Forum, which discusses 2ch stereo ! Link to comment Share on other sites More sharing options...
Candyflip Posted November 29, 2018 Share Posted November 29, 2018 26 minutes ago, Snoopy8 said: FYI, this is posted on wrong Forum, which discusses 2ch stereo ! Fixed. 1 Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 29, 2018 Author Share Posted November 29, 2018 59 minutes ago, Snoopy8 said: If you drop the volume on the RXV1, is the noise still there? No, If I take it to 80% ( -20 db ) I cant hear any noise. I guess that answers my question. I have to use higher levels on the Integra. I don't really understand the setting for absolute or relative in the menu for volume level. 1 Link to comment Share on other sites More sharing options...
Snoopy8 Posted November 29, 2018 Share Posted November 29, 2018 8 minutes ago, shueardm1 said: No, If I take it to 80% ( -20 db ) I cant hear any noise. I guess that answers my question. I have to use higher levels on the Integra. There is some noise coming from the Integra which is being amplified by the Yamaha at high volume. It is likely to be coming from one of your components attached to the Integra. 14 minutes ago, shueardm1 said: I don't really understand the setting for absolute or relative in the menu for volume level. Maybe this will hep: https://www.soundandvision.com/content/‘relative’-vs-‘absolute’-volume-what’s-difference Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 29, 2018 Author Share Posted November 29, 2018 9 hours ago, Snoopy8 said: It is likely to be coming from one of your components attached to the Integra. The noise was regardless of selected input Ive just decided to use -20 and increase the Integra. Thanks for the help and link, will read up on it. Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 29, 2018 Author Share Posted November 29, 2018 (edited) In regards to reference level at 0 db ( using relative ) , how does this take into account the volume of the amp connected to it? It doesn't ? If I am at 80% on power amp then my reference level 0 db on pre amp is really not that at all , unless I use 100% power on the amp? Edited November 29, 2018 by shueardm1 Link to comment Share on other sites More sharing options...
Snoopy8 Posted November 29, 2018 Share Posted November 29, 2018 10 minutes ago, shueardm1 said: The noise was regardless of selected input Noise may be coming from a component, a cable regardless of selected input. The only way to test is to disconnect the component. 4 minutes ago, shueardm1 said: In regards to reference level at 0 db ( using relative ) , how does this take into account the volume of the amp connected to it? It doesn't ? If I am at 80% on power amp then my reference level 0 db on pre amp is really not that at all , unless I use 100% power on the amp? It cannot take into account both units. The only way is to measure using a calibrated microphone, and noting settings on both units. But why is it so important to know the actual level? Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 29, 2018 Author Share Posted November 29, 2018 1 minute ago, Snoopy8 said: But why is it so important to know the actual level? it's not really. Just reading your link it seemed like knowing your reference level was important and not to go over it. Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 29, 2018 Author Share Posted November 29, 2018 1 minute ago, Snoopy8 said: Noise may be coming from a component, a cable regardless of selected input. The only way to test is to disconnect the component. Ill try tomorrow Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 30, 2018 Author Share Posted November 30, 2018 I removed all connected components and it changed nothing. Link to comment Share on other sites More sharing options...
Snoopy8 Posted November 30, 2018 Share Posted November 30, 2018 9 minutes ago, shueardm1 said: I removed all connected components and it changed nothing. You may have a ground loop or your Integra is noisy. Have a look at this article to determine whether it is a ground loop https://www.techhive.com/article/3063590/home-audio/how-to-get-rid-of-hum-and-eliminate-other-noises-from-your-audio-and-video-systems.amp.html Link to comment Share on other sites More sharing options...
powerinnumbers Posted November 30, 2018 Author Share Posted November 30, 2018 its not ground loop. It may be ( only remaining ) simply interference from the power board , I might have to find a UPS 1 Link to comment Share on other sites More sharing options...
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