Background 'hum' with 2.6 and Wharfedale 15s.

Home :: General Discussion :: Background 'hum' with 2.6 and Wharfedale 15s.Reply
Background 'hum' with 2.6 and Wharfedale 15s.
Posted on: 17.12.2012 by Lin Danek
I recently updated to Traktor 2.6 (ASUS NJ61 running unbloated Windows 7) and have since developed an issue with my personal set-up. I run a pair of (self-powered) Wharfedale 15s directly from the BALANCED output of the S4 (TRS jack to TRS jack) and now notice a faint 'hum' on start up. The noise stays at low level with increased output on both 'sotware' and 'main outputs' - I keep both at around 12 o' clock. I am assuming that it is related to the speakers in some way, as I run a studio set-up with KRK 6s and a 10" KRK subwoofer (balanced output to subwoofer, balanced outputs to monitors) without any issues. Any ideas?
Thank you.
Lin Danek
17.12.2012
Originally Posted by sarasin
Thats the one I cut off and replaced with a 3 prong, like we generally use in SA.
I have that plugged into a power strip....which is Earthed....so all good.
Me Crazy?
Well..I have been Hum Free for the last 4 years.....and have had nothing happen to my lappy.
Play Outdoors often....off Generators...from Club power...no issues.
Up to you whether you want to do it.
My point Adrian - those round jobs drive me NUTS - and they are NOT earthed. Always do the SA thing and replace with a standard 15amp plug. I ALWAYS plug into an earthed power strip with surge protection. Way to go. Dankie.
Lin Danek
17.12.2012
Originally Posted by Patch
You are crazy.
What about the round two-prong power cable that comes with some laptops - is THAT earthed?
Lin Danek
17.12.2012
Originally Posted by Patch
You are crazy.
Seems to be the general concensus.
Lin Danek
17.12.2012
Originally Posted by sarasin
Ground Loop maybe?
http://www.virtualdj.com/wiki/Ground%20Loops.html
Yup - go to battery - no hum. Guess the isolator is the way to go. Removing earth seems dicey.
Lin Danek
17.12.2012
Originally Posted by DJKeyWee
what happen if you run your laptop only from it's battery? If the hum disappear and your power supply se 3 pins in the AC outlet, you may want to change it for a 2 pin model.OR you may try to lift the ground pin of your TRS cables (yeas both channel) .. no it doesn't hurt ... it's not the AC ground.
Some will also use some sort of passive direct box (aka hum eliminator) between the speaker and the S4.
Thank you KW - heard about the 'eliminator' - ANOTHER box . Gonna try your other suggestions.
Lin Danek
17.12.2012
I recently updated to Traktor 2.6 (ASUS NJ61 running unbloated Windows 7) and have since developed an issue with my personal set-up. I run a pair of (self-powered) Wharfedale 15s directly from the BALANCED output of the S4 (TRS jack to TRS jack) and now notice a faint 'hum' on start up. The noise stays at low level with increased output on both 'sotware' and 'main outputs' - I keep both at around 12 o' clock. I am assuming that it is related to the speakers in some way, as I run a studio set-up with KRK 6s and a 10" KRK subwoofer (balanced output to subwoofer, balanced outputs to monitors) without any issues. Any ideas?
Thank you.
Lilliana Perris
17.12.2012		Lekker Boet!

Lin Danek
17.12.2012
Originally Posted by sarasin
Thats the one I cut off and replaced with a 3 prong, like we generally use in SA.
I have that plugged into a power strip....which is Earthed....so all good.
Me Crazy?
Well..I have been Hum Free for the last 4 years.....and have had nothing happen to my lappy.
Play Outdoors often....off Generators...from Club power...no issues.
Up to you whether you want to do it.
My point Adrian - those round jobs drive me NUTS - and they are NOT earthed. Always do the SA thing and replace with a standard 15amp plug. I ALWAYS plug into an earthed power strip with surge protection. Way to go. Dankie.
Lilliana Perris
17.12.2012		Thats the one I cut off and replaced with a 3 prong, like we generally use in SA.

I have that plugged into a power strip....which is Earthed....so all good.

Me Crazy?

Well..I have been Hum Free for the last 4 years.....and have had nothing happen to my lappy.
Play Outdoors often....off Generators...from Club power...no issues.

Up to you whether you want to do it.
Lin Danek
17.12.2012
Originally Posted by Patch
You are crazy.
What about the round two-prong power cable that comes with some laptops - is THAT earthed?
Lin Danek
17.12.2012
Originally Posted by Patch
You are crazy.
Seems to be the general concensus.
Brunilda Kora
17.12.2012
Originally Posted by Sarasin
I removed the Earth....and its fine.

You are basically making it a 2 prong plug.

I just cut the Earth Wire in my laptop power plug and now I have only 2 wires in my 3 prong plug.

Totally safe and does the trick.
You are crazy.
Lilliana Perris
17.12.2012		I removed the Earth....and its fine.

You are basically making it a 2 prong plug.

I just cut the Earth Wire in my laptop power plug and now I have only 2 wires in my 3 prong plug.

Totally safe and does the trick.

Lin Danek
17.12.2012
Originally Posted by sarasin
Ground Loop maybe?
http://www.virtualdj.com/wiki/Ground%20Loops.html
Yup - go to battery - no hum. Guess the isolator is the way to go. Removing earth seems dicey.
Lilliana Perris
17.12.2012		Ground Loop maybe?

http://www.virtualdj.com/wiki/Ground%20Loops.html
Kristofer Krauel
17.12.2012		A good friend of mine always had a 'hum' when plugging his s4 into his Wharfdales. Drove us crazy. Eventually resided at the fact that it was something that would always be there. When her changed his set up to A10, mixer and 2 X1's the hum disappeared. I know this is of no help. Just more of an observation!
Lin Danek
17.12.2012
Originally Posted by DJKeyWee
what happen if you run your laptop only from it's battery? If the hum disappear and your power supply se 3 pins in the AC outlet, you may want to change it for a 2 pin model.OR you may try to lift the ground pin of your TRS cables (yeas both channel) .. no it doesn't hurt ... it's not the AC ground.
Some will also use some sort of passive direct box (aka hum eliminator) between the speaker and the S4.
Thank you KW - heard about the 'eliminator' - ANOTHER box . Gonna try your other suggestions.
Lisa Lochotzki
17.12.2012		what happen if you run your laptop only from it's battery? If the hum disappear and your power supply se 3 pins in the AC outlet, you may want to change it for a 2 pin model.

OR you may try to lift the ground pin of your TRS cables (yeas both channel) .. no it doesn't hurt ... it's not the AC ground.

Some will also use some sort of passive direct box (aka hum eliminator) between the speaker and the S4.

<< Back to General DiscussionReply

Copyright 2012-2023
DJRANKINGS.ORG n.g.o.
Chuo-ku, Osaka, Japan

Created by Ajaxel CMS

Terms & Privacy