Question about MXL 990s Professional Microphone

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Can't operate my MXL 990

I purchased a barely used MXL 990 (plus shockmount) condenser microphone...but I can't turn it on. I don't even know if it's something you have to turn on. We've plugged it into a mixer to record, nothing happened. I plugged it into my computer to record, no sound got through. I feel like a complete noob but I had heard great reviews about this piece of equipment, so I got one as soon as i could. I can't even find a useful online manual, I've been searching for days. What do I do, how do I operate it?

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  • Anonymous Mar 10, 2009

    I got the mic but it never mad any noise or anything i want to use it for reper

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If it is an MXL 990 Condenser that comes in the grey case with a shockmount and a black hard mount I can solve your problem. (If it is USB I know nothing about that unit).

This MXL 990 microphone MUST have 48v phantom power in order to operate. If you aren't familiar with the term phantom power read the first link:

Phantom power - http://en.wikipedia.org/wiki/Phantom_power
MXL User Guide - http://www.mxlmics.com/support/guides.html

If yours is one of the older MXL 990's it should have an XLR connector on the bottom -
XLR Defined - http://en.wikipedia.org/wiki/XLR_connector

Your mixer (I am guessing its a Peavey, Tascam, Mackie) or something entry level like that may or may not have phantom power. I am guessing not. But if it does, it will have a switch that says 48v phantom power and most likely a green or red LED next to it to show you when its on. This mic will NOT work without phantom power.

Best suggestion: Verify that your mic is the MXL 990 Condenser, if it is it needs 48v phantom power. Check your mixer and see if it has 48v phantom power. The only computer soundcard that I know of that is used by a lot of folks is the M-Audio Delta 1010LT. It has XLR inputs but NO phantom power on it.

There's your answer.
Ray

Posted on Feb 28, 2009

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You dont deserve to record if you can't work this out, Go get a professional to do it. although with brains like yours I wouldn't think much of any value to the world would be happening.

Posted on Oct 04, 2011

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You may need something like these:

X2u XLR to USB Signal Adapter

Instruction on the web page.

Posted on Sep 30, 2012

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1 Answer

Does an MXL 990 microphone only work with an inbox?


By "inbox" do you mean a transformer that powers it?
Condenser mics need 48 volts (phantom power) to run, so you normally switch the phantom power button on for the channel you have the condensor mic. plugged into.

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The user manual says Phantom Powered Mic input which means you should be able to use a condenser microphone requireing Phantom Power.

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No sound from mxl 990 condenser mic


From the Micropower PS400 product description it states:

"routes the microphone signal to a mixer or a microphone preamplifier."

• these is just a phantom power supply.


One reason your former setup is OK , is that

tascam m-50 is a mixer preamplifier.

• phantom power supply is just a part of the mic preamp of the mixer

to power up your mxl 990 condenser mic


• What you may need is something like these:

X2u XLR to USB Signal Adapter

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1 Answer

990 mxl condenser mic rattles


Not supposed to rattle. Sounds like it may have been dropped. Very delicate parts inside these comdenser mics. Even blowing into them can damage them. Maybe you could get luck to find a screw that vibrated lose if you carefully disassemble the unit. Or you can take it to your local music store/ electronics repair shop and have them repair it.

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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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I just purchased a MXL 990 condenser mic. I am pissed. I get home and hook it up to my Toneport UX2 and turn phantom power on and I literally get nothing. I don't get it.


Phantom power comes in different voltages. Make sure your power supply is delivering enough. Also make sure that your mike cable is wired properly. 1 is ground or shield. 2 is hot or Ve+ and 3 is cold or ve- If 1 and 3 are bridged for unbalanced use or if you have a short it won't work and will probably damage the mike or the power supply. I think the power supply needs to be 48 volts and you have to use the stereo XLR cord that is recommended for it. I hope this helps.

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I have a m-audio buddy using a mlx 990. I have this hooked to 200 ohm peavy amp. The problem is I can barely touch the gain on the pre-amp or the amp without getting extreme feedback.


It appears that the condenser microphones that are omni directional are too sensitive to process thru an amplifier. I used an mlx 991 directional condenser microphone and though still very sensitive, I was able to avoid the feedback. According to the company condenser microphones are used more for recording and not so much for live stage.

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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

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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

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