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Bad cable causing my noise?

M

mclld

Weaksauce
Joined
Apr 15, 2014
Messages
80
I have a Logitech sub and two speaker setup. The noise isnt constant but happens most of the time, it is a weird noise and hard to explain and doesnt even have a steady sound. I am guessing it is some kind of inference
 
many many possibilities based on information provided


do the following in which ever order you want....i guess

1. try to figure out if it is you computer plug speakers into your smart phone or mp3 player (or ?? other device) noise still there?

2. move speakers to a different power outlet and try them with phone or whatever noise there?

3. may be poorly shielded cables you could try getting a ferrite choke
(something like this.. check size you need).
http://www.radioshack.com/product/index.jsp?productId=3012599


it can get tricky tracking things down.. could be noisy onboard pc audio (or sound card depending) could be a simple as cable routing in case. could just be badly implemented onboard audio that is inherently noisy.

in my case i had noise issue with the power adapter from my laptop (when it was plugged in would get static on my desktop pc speakers .... had to move laptop power supply to different outlet.)

another possibility (and Logitech speakers are not held in the highest regard ) the speakers themselves are just poorly shielded and / or are picking up noise from their own internals.
 
I plugged it into my phone and same thing, I also noticed when it was unhooked it still made that noise. I will try and different cable and try moving my power cord
 
Most likely your el-cheapo computer speakers are crapping out. Power supply capacitors tend to create funky audio interference before they pop completely.
 
mclld said:
I plugged it into my phone and same thing, I also noticed when it was unhooked it still made that noise. I will try and different cable and try moving my power cord
Click to expand...

If the speakers make the noise with no input cable plugged in then the speaker set is crapping out, time for something new. Try a different power source first ie plug the power in at a different outlet.
 
Cables are cheaper to replace than speakers....and cable rotted cables can make all sorts of neat noise.

Try a different circuit just for giggles, but I'd replace that cable if possible. PC speakers come with shit cables these days. I tried a set of logitech Z506s for all of 24 hours before cable rot was setting in...all because the idiots at Logitech at their factory bend the cables rather than coil them, making the cables metal fatigued to start with.
 
Uhm, Logitechs are shit all over not just their cables lol.
 
B00nie said:
Uhm, Logitechs are shit all over not just their cables lol.
Click to expand...

Undoubtedly, but cables are the easiest thing to kill without effort. Especially when they're idiotically packed.
 
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I meant the cable wasnt plugged into my pc audio out. I cant complain, paid $20 for these years ago at a flea market. There is a guy one craigslist with a new in box set of Logitech z506's for $35 obo, I offered $20 and he said if they dont sell in a couple days he will take it.
 
The most helpful thing to help you diagnose the noise is a recording of it. Can you make an audio recording with your phone?
 
FWIW, My Logitech Z5500's were giving some weird feedback when I lived in an apartment a year ago. I thought they were crapping out on me as well, but it turns out it was simply the power circuit in the apartment. My wife and I bought a house last year, and after moving all the feedback is now completely gone.

I don't think the Logitech's have very good internal power conditioners, or they're simply just not doing their job anymore, but a less noisy power source was the answer.
 
SRTie4k said:
FWIW, My Logitech Z5500's were giving some weird feedback when I lived in an apartment a year ago. I thought they were crapping out on me as well, but it turns out it was simply the power circuit in the apartment. My wife and I bought a house last year, and after moving all the feedback is now completely gone.

I don't think the Logitech's have very good internal power conditioners, or they're simply just not doing their job anymore, but a less noisy power source was the answer.
Click to expand...

A simple ground loop can create bad interference in sound. Also many computer power supplies leak 110v AC low current voltage to the chassis/ground of the computer case. This can cause nasty stuff when you plug in your amp. You can test if your computer is actually at a voltage potential by holding your audio jack in your fingers and touch your computers metal part (or the audio cards audio connector) with the same finger that touches the audio jack. If you feel nasty tingling in your fingertip it means your amp and your computer are on different potential levels and your sound card is feeding high voltage through your amp. This is a recipe for disaster.

This can be fixed by installing a galvanic separator between your audio gear and your computer.
 
Maybe it is the power strip I am plugged in to. I will try another and I may be able to do an audio recording, never tried on my phone
 
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