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Tom's Hardware > Forum > Systems > Homebuilt > HDD use + front panel audio = static noise

HDD use + front panel audio = static noise

Forum Systems : Homebuilt HDD use + front panel audio = static noise

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Hi all. I've recently been trying to figure out how to fix this problem. Essentially when my headphones are hooked up to my cases front panel (sound, mic, usb, FW) I get a ton of static that seems to be noise from the HDD's working.

Current pc specs:

Silverstone 850W power supply
HT Claro Omega Audio card
SATA WD raptors (raid 0)

Now here's what I've tried:

1. Unplugged the front panel USB/FW cord. Didn't work
2. Plugged the same headphones into the rear of the computer, worked, no noise.
3. Tried manipulating the front panel audio cord so it doesn't hit my video card and such, didn't work.
4. Mobo audio is turned off in the BIOS
5. Removed all OC'ing


The noise isn't quite noticeable in FPS games where there's constantly sound happening, or just listening to music. But when it's quiet i can here it. Games with a lot of HDD use, like WoW for example, the noise is *constant* and the pitch is always changing based on the load I'm putting on the HDD's (like if i turn my camera quickly in a crowded city).

I'd really like to figure this issue out, between all the money thrown into the various parts of this PC i really don't think i should be getting these issues.

And before someone asks "why don't you just keep them plugged into the back?" I'll say this: When I'm using VoIP, or anything to talk to people in-games, I don't want to have to keep unplugging my speakers to plug in my headphones. It's a real pain, have to reach under the radiator and through cords and crap.

Thank you for any help, I'll be monitoring this so ask any questions you need.


Message edited by icewolf69 on 06-27-2009 at 12:03:39 AM
Reply to icewolf69
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Do you have a quality case with good wiring?

Reply to GhislainG
- 0 +

I hAVE a ANTEC 900 and a X-FI extremeGamer sound card and the front panel STILl sucks (full of static) its like that for both the Sound card and onboard audio >_> such T_T tell me how to FIX T_T!!!!!!!!!!!

Reply to zhemin

You need to make sure that the wiring in the case is EM shielded, as your hard drive spins it creates a varying magnetic field giving you noise in your line. Shielded lines are a bit harder to come by but if you get a splitted to plug into the back of your computer and an extension you can run it out of the back of your computer and get around your issue.

 

http://www.newegg.com/Product/Prod [...] 6812816091
http://www.newegg.com/Product/Prod [...] k=splitter

 

Should solve your problem


Message edited by hunter315 on 06-27-2009 at 04:03:28 AM
Reply to hunter315
- 0 +

okay im so sorry icewolf69 T_T im stealing ur blog coz i dont noe how to start one T_T , but hey mine i dont think has anything to do with the HDD >_> it just static >_> for some reason :S i hate it >_> i need to use the front panel as i have multiple headphone getting to the back is a pain >_>

Reply to zhemin

Well Zhemin it can also be caused by the video card, your case LED's, or CPU. i'd try to pull the cord away from any components while it's on to see if that helps. then try disconnecting your LED wires from the mobo.

There's also a good tutorial on eVGA's forums on wraping your front panel audio connector in foil and electrical tape to reduce noise. I'll see if i can pull it up.

I'm going to try that, and maybe hunter's suggestion also.

I also have a Z-5500 on order, so if all else fails I'll just plug my headphones and mic into the speaker control system on the Z-5500.


Reply to icewolf69

GhislainG wrote :

Do you have a quality case with good wiring?




Well i don't know if *any* case has quality wiring these days. they're all made in malyasia and china, and let's face it, these companies are trying to make money and will cut corners when they can. you can tell that just by noticing that your front panel cable is JUST long enough to get to your audio input. I'd like to wire it behind the mobo, but that's not going to happen.

My case is a silverstone TJ-09 though. and for the price i paid for it, i would think that's about as "quality" as i'm going to get.


Message edited by icewolf69 on 06-27-2009 at 06:12:26 AM
Reply to icewolf69

Wouldnt have thought of wrapping them in foil and electrical tape but if you run a wire from the foil to your case its now grounded and pretty well shielded. I would give that a shot first because worst case you use a bit of foil and a couple bucks worth of tape but it seems like a sound idea.

Reply to hunter315
- 1 +

hi guys, old thread i know but I have spent most of the afternoon trying to solve similar issues, so i thought I'd share some knowledge :D

obviously the problem lies with EM interference, and i found a post on another forum (link lost: i powered down to try it!) saying that (particularly for antec cases) the problem is caused by the front USB and AUDIO headers sharing a ground connection, hence i set to work decoupling them.

the following applies to an Antec 300 (and probably all other antecs and many other cases):

1. take front panel off (plastic bit, clipped on with plastic hooky clips)

2. locate plastic block containing connectors, unscrew, and prize lid off with a small electronics screwdriver or similar (I started with a plectrum)

3. under the headphone socket there was a black earth wire which looped under the mic jack and was soldered onto the back of the USB port on the left, I snipped it as close as possible to the USB end, leaving me around 1½" slack wire to play with

4. cut/filed a groove in the edge of the plastic box to allow the cable to pass outside

5. as i screwed the box back in I caught the wire between the plastic block and front panel, such that the splayed ends of the wire touched against the bare metal of the case chassis.

thats it!! careless wire stripping left me with only 4 strands of wire exposed, which doesn't provide an ideal contact, but it has still eliminated ALMOST all of the noise (I'd say it's around a 75% reduction), but i think to do any better it may be useful to wrap the wire as Hunter suggests

If anyone wants to try this, but is unconfident, I took a few photos for a pictorial but haven't uploaded them yet, if you want them, let me know!

Reply to FanterA
- 0 +

Im going to reopen this: this seems to be usual in Antec cases. As both of my 902's have the same problem. I really would like to avoid FanterA's mecking so, have anyone figured a easier method yet?

------------------------------ -And there was light-
Reply to boldor
- 0 +

Add me to the list of Antec owners with static ridden front panel audio. I'm really glad I googled the problem cos for the life of me I couldn't figure out what was going on. I was also curious about why the static (which in my case isn't just static, but a sort of low volume high pitch whine as an accompaniment) seemed to fluctuate and change constantly. Interesting to hear the OP's comments regarding his HDD interfering and causing it. Based on what I've read it's definitely interference of some sort. So it wouldn't surprise me. At least can evidently be eliminated.

Zhemin - this is the first page I've visited since I started searching about the problem a few minutes ago, but I'll be hunting down a solution one or another. I'll keep this thread updated when I find the simplest, most user friendly and idiot proof way to get it done.

It's a shame Antec didn't do a little more R&D on this. In the few searches I've done it looks like a large number of people have this issue. Mostly 900 owners, but it obviously effects their other models like my 100. Surely Antec should have picked up this flaw during R&D.

Reply to rxracer
- 0 +

good job, rxracer... keep us posted and anyone with any input is welcome!

------------------------------ -And there was light-
Reply to boldor
- 0 +

Just to add - I've just experienced this issue - affected both my speakers and my headphones coming from and Auzentech Forte. Even switching to digital out there was still this drumming static noise.

My case is also an Antec but a P182.

Tracked down the source (after moving mobile phones away and unplugging virtually ever single cable!) - my microphone default had switched to the front panel choice, which was producing the static. Nothing was plugged in but you could see the noise level moving in time on the Sound panel.

Just selecting the back panel mic eliminated the problem immediately. Funnily enough, after going back to the front panel moments later, the noise had disappeared. But the cause really was the front panel mic.

No idea if the Antec wiring is sub par or what but hope this helps...

Reply to Noli
- 0 +

I have the same problem with my case. I have a cosmos 1000 and using the mobo sound. The HDD seems to be the problem, as when it goes into full use it will start clicking or whining - sounds like static. I did similar things like remove usb connectors, move the audio cable so it wouldnt touch other cables. It's certainly some interference, i dont get this on the rear panel but I want to use the front for less obvious reasons. I plan to do the wrapping in aluminum foil with electric tape over it.

Reply to Elijin
- 1 +

I know this is an old thread, but it is the first result that pops up when searching Google for "front headphone static noise", so it is likely that people will come here looking for a solution...

I had the exact same problem as icewolf69. Reading through this thread I saw the post from rxracer and that gave me an idea. Although I don't have an Antec case (I have a Sharkoon), the headphone connector is mounted on the same circuitboard as the front USB ports.
So I made two small modifications by cutting (scratching) the circuitboard so that the ground connectors of the USB ports were no longer connected to the headphone ground pin. And that solved the problem. I've made a photo to show what I did (look at the two blue arrows).

http://img824.imageshack.us/img824/3843/reparatie640.jpg

Reply to Aspegic

I have been looking for similar issue and solution.
I just want to add just in case there are others with similar scenarios.
I do have a Strikecool Strike-X ST.
I usually play music/videos with an external HD (which is plugged in front).
The static is only really noticeable when volume is near maximum.
Now when I disconnected the HD in front, the static immediately went away.
So I suppose I have the same with everyone else here that the grounding is same with the usb.
Thinking of scratching the board too but since I just built my unit (new case), I'd let Aerocool know and what recommendations they'd give.
Thanks all, it helped me narrow down the problem after reading this thread.

Reply to stonerockbato
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