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microphone cable shielding ?

post #1 of 8
Thread Starter 
I have an audio-technica ATR-1100 and I need the cable to drape over a power bar that's being well used. Is there something I can slip over the cable (maybe just the part that's on the power bar) to protect it from any EMI? hopefully it's cheap.
post #2 of 8
Quote:
Originally Posted by a10112 View Post

I have an audio-technica ATR-1100 and I need the cable to drape over a power bar that's being well used. Is there something I can slip over the cable (maybe just the part that's on the power bar) to protect it from any EMI? hopefully it's cheap.

Cheapest thing to do would be to go to a hardware store and get some plastic dip. Simply dip your wire in there, pull it out and let it dry. Repeat for thicker insulation. thumb.gif
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post #3 of 8
Quote:
Originally Posted by Tjj226 Angel View Post

Cheapest thing to do would be to go to a hardware store and get some plastic dip. Simply dip your wire in there, pull it out and let it dry. Repeat for thicker insulation. thumb.gif

Plastic is not going to do anything to prevent EMI. You would need metal (say foil) and it would need to be grounded at both ends so as not to act like a giant antenna (as in the case of shielded Ethernet cables). I'm not familiar with that mic, but usually a decent XLR cable will do a pretty good job of dealing with interference on it's own. If your mic uses a 1/4in jack only then you really don't need to worry about EMI as that mic is probably the problem. You might want to check if your phantom power box (tell me you're not running with phantom power from your mixer!) unit is getting clean power.

Other than that, the only way to avoid EMI on signal cables is to route them away (say at least 3 or 4 feet) from power cables. This can be a huge pain but is pretty much unavoidable. I've torn down and moved my little project studio around more times than I want to admit to combat this very issue. If you can, I would suggest hanging your XLR cable from the wall or celing if you can't find a place to lay the cable down. It will look terrible (say a hook and some string) but it works really well. That said, be sure it's the cable and not the source of your phantom power that is the problem. Keep in mind that florescent lights (even CLFs) are the devil. The only other thing I would suggest is going with 48v instead of 12v assuming your mic can do that. It always seems to help with my larger condensers.

Edit: In summation, string, thumbtacks, duct tape, maybe a picture hanging nail if the tacks don't hold. I've seen that sort of thing done in studios charging $350/hour so don't feel bad it it looks ugly. No one is gonna ask if your studio space was attractive when they listen to your recording.
Edited by RandomK - 12/13/12 at 12:01am
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post #4 of 8
I was thinking of something completely different, sorry arrowheadsmiley.png.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by RandomK View Post

...
it's a 10$ mic, man. runs solely from the microphone jack on the motherboard/case. I was just curious about any EMI interference from the power bar I'm going to have to lay the cable on since at any time, there's about 900-1000W running through it (servers).
post #6 of 8
Quote:
Originally Posted by a10112 View Post

it's a 10$ mic, man. runs solely from the microphone jack on the motherboard/case. I was just curious about any EMI interference from the power bar I'm going to have to lay the cable on since at any time, there's about 900-1000W running through it (servers).

Ahhhh. Forgive me for assuming that someone with a $10 mic wouldn't post the exact model number. Nothing wrong with that of course, we all have to start somewhere. The advice about hanging the wire above the power bar is still valid though. Just take some duct tape and fold it over the mic cable to form a little tag. Then use a nail or thumb tacks and stab the tag into the nearest wall/ceiling/potted plant/drummer and you're good to go.
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by RandomK View Post

Ahhhh. Forgive me for assuming that someone with a $10 mic wouldn't post the exact model number. Nothing wrong with that of course, we all have to start somewhere. The advice about hanging the wire above the power bar is still valid though. Just take some duct tape and fold it over the mic cable to form a little tag. Then use a nail or thumb tacks and stab the tag into the nearest wall/ceiling/potted plant/drummer and you're good to go.
Actually, I have an MXL-2008 on my desk... but I ran into some health problems sitting on my bum for upwards of 12 hours a day. I made a station out of my workbench where I can stand up. I bought this new mic because I don't have enough to drop on a nice microphone, its power source, etc.
post #8 of 8
Quote:
Originally Posted by a10112 View Post

Actually, I have an MXL-2008 on my desk... but I ran into some health problems sitting on my bum for upwards of 12 hours a day. I made a station out of my workbench where I can stand up. I bought this new mic because I don't have enough to drop on a nice microphone, its power source, etc.

Yeah studio equipment is the sort of thing one just sort of acquires over the years. I tend to grab items used when I can, and trade wherever possible. I used to travel a lot and you can take advantage of what's popular in different parts of the country. Vintage Fender stuff is cheap and plentiful in the Northwest for example, but sells for big bucks in Texas. I got a pretty decent 32 channel Behringer off Craig's list a few years back for like $150 because some chick was pissed off at her cheating husband and was unloading his gear out of spite. Deals are out there, and duct tape fixes all. You should try it.
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