Question about M-Audio MXL 990/991 Recording Mic Duo and Audio Buddy Package Microphone

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Problems with my MXL 990

Hi there!!!! how are you??? I hope really good....
well, a long time ago I had a problem with MY DIGI 002 and you helped me a lot, so right now Im having big troubles with my condensers (2 of them) I bought 2 packages of MXL 990 - 991, but 991 works perfectly...
The problem with 990 is that every time I plug it for recording this huge radio signals keep getting into the proyect and wont let me record alright.. Ive tried changing locations, changing cables, verify my power (energy) but nothing worked.... I have 2 MXL 991 and other 2 micros and they work just fine.... I hope you can help me... thank you a lot for reading and taking some of your time for helping me solve this... :) hugs!!!

Joce

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I had the same problem, what really happened was that the wires from the XLR were too close to the electronics on the board.

There happen to be different versions. One is with the components like the image on the link.
http://microphone-parts.com/wp-content/uploads/2012/11/990-circuit.jpg
The other, like mine has the board upside down, and that explains why the wires could get so close to the electronics.

Open your microphone and with a toothpick carefully push them away from the electronics, so that the excess wire is no longer that close to the electronics, but more towards the XLR-connection. You could try to keep them that way with a tiny tie wrap.

I suppose the problem was RFI/EMI within the microphone itself.

It might not work for you, but it solved the problem for me.

Posted on May 13, 2014

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I Would Take It Back For An Exchange.

Posted on Jan 05, 2009

Sounds like the frame of the microphone itself has become ungrounded. You could try VERY
carefully disassemble the mic and check for a bad ground or a bad wire connecting to the mic
body.

Posted on Sep 14, 2008

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Posted on Jan 02, 2017

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1 Answer

Is the 990 an externally polarized capsule or electret?


The MXL 990 is an externally polarized condenser microphone. You will nee to provide 48v Phantom power to use it. Alternatively there is a USB version, the MXL 990 USB which gets it['s power from the USB port.

Dec 31, 2010 | MXL 990 Professional Microphone

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Would you please help me? My MXL 990 doesn't work when i plug it in the M-audio USB interface. The led doesn't light. I use XLR cable. Please help. Thanks a lot!


Make sure the Phantom Power on the Audio buddy is on. If that fails, get in touch with MXL and they will troubleshoot it with you.

Oct 30, 2010 | M-Audio MXL 990/991 Recording Mic Duo and...

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Hi i have digi design rack 002 with pro tools le


Try the other port on the 002. If that doesnt work, I recommend trying the 002 on a computer that does have 400 to see if it will connect then.

If it doesnt, then you may have a couple blown firewire chips inside your 002. It happens, and can be fixed.

Jun 29, 2010 | Digi 002 Rack FireWire-based Pro Tools LE...

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My computer won't recognize my 002 rack. Just


probably too late..but the internal power harnesses go bad on the digi oo2. I bought mine from sweetwater and they sent me a new harness for free.

good luck

Feb 19, 2010 | Digidesign Digi 002 Rack FireWire Pro...

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MXL 990 doesn't work


Your other preamp does not have phantom power to supply power to the microphone. All condensor mics like this need phantom power. The Audio Buddy provides phantom power, which is why it was shipped with those condensor mics

Jan 16, 2009 | M-Audio MXL 990/991 Recording Mic Duo and...

2 Answers

Problems with my MXL 990 (radio)


g'day mate.
The problem you have will relate to the big antennas in your area. Most radio stations pump more than 100,000 watts these days. So it really comes down to the shielding and what's called Radio Frequency Interference rejection of your microphones to keep this out. I would STRONGLY urge you to take the mics back and get a refund,or change them over for something else. They are VERY cheap, there is no real solution to your problem, except for better design... means spend more mullah. If you are looking for a decent low cost condenser mic, I recommend an AKG Perception. I have used AKG for years, and this mic is a great sounding low cost unit.

Hope this helps you. Nothing can be done to improve what you have, they are a cheapo item. Good Luck

regards
robotek

Sep 11, 2008 | MXL 990s Professional Microphone

1 Answer

Problems with my MXL 990 (radio)


Luis
I guarantee you the antennas are most likely the culprit. Your only solution is to have a tech check the unit, OR purchase an inline RF filter from Radio Shack. It is also possible that you have a capacitor or other component going bad, that is causing the unit to heterodyne and become a nice front end for a radio receiver.

You do have other microphones, and they do not do this. Averages says it is most likely the microphone has an issue or its design. I have one of these MXL 990s too, and my mic began motorboating a few months ago while I was trying to record with it. It may be a quality issue with these mics. They aren't complicated though, any component electronic tech should be able to check it out.

Sep 11, 2008 | MXL 990s Professional Microphone

1 Answer

MXL 990 has really low output


These are really cheap mics! I have two dozen of them because what I do requires the mic to be expendable. The capsule is pretty fragile and just a little drop or hit to the mic can drastically alter the frequency response and output level. If you record with it and it has a hollow sound I would bet this is what happened. If you can generate white or pink noise out of your system, then record it. Just hold the mic in front of the speaker. Play it back and compare the tone of the recording to what you just heard. Hollow? There you are!

Aug 28, 2008 | MXL 990 Professional Microphone

1 Answer

Unable to locate the unit on my G5


It's the power supply / DC Harness issue. A well known fault with the Digi 002.

Two things you can do:

Call Digidesign. They'll overnight you a new power supply and DC wiring harness free of charge, as well as installation instructions. They might also still be willing to do the repair for you (also free of charge), but that means you'll have to ship the unit to them, which will take considerably longer than the DIY approach.

Or, if you're REALLY stuck and you need to get back up and running RIGHT NOW (okay, within 30 minutes or so), you can disassemble the 002, pull the DC harness and clean the contacts with some Caig DeOxit, then apply a bit of ProGold, then put it back together... chances are that will clear up your problems and allow you to finish the session. :)

There are some good instructions on how to open up the 002 and what to treat over on the Digidesign User's Conference (http://duc.digidesign.com/postlist.php?Cat=&Board=UBB32&page=0&view=collapsed&sb=5&o=7) , but I can't locate them at the moment. But if you ask over there, I'm sure someone can refer you to the correct post. :)

I got one of the very first 002's in N America three years ago... and it worked fine for the first couple of months, then had the wiring harness issue... and Digidesign replaced it (via overnight delivery) and paid for the return of the defective unit. About a week ago, it went out again, This time, I got the replacement parts (including a small amount of the Caig chemicals :thu: - although I already had those on hand) overnighted to me. The install isn't all that difficult, but the placement of some of the locking tabs on the connectors is a bit difficult to deal with. Just go slow and don't force anything... a small screwdriver will help in "unlocking" some of those tabs. :)

Dec 28, 2006 | Digi 002 Rack FireWire-based Pro Tools LE...

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