Marshall Electronics MXL 990 manual

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Marshall Electronics MXL 990 manual | Manualzz


Marshall Electronics

Professional Audio Division

Phone: 310-333-0606


Fax: 310-333-0688 

[email protected]


Condenser Microphone

Thank you for choosing the MXL 990 Condenser microphone. With proper care, this mic will provide many years of satisfaction. To get the best results, please take a few moments to read this manual.

Enjoy your microphone!

The MXL Team

General Characteristics

This microphone has a 22mm capsule with a gold-sputtered diaphragm and a fixed cardioid pickup pattern. Condenser microphones are very sensitive, readily revealing very subtle sonic details. They also tend to pick up sounds outside the pattern more than some designs, which can lead to powerful feedback if you are not careful. We strongly advise experimentation with placement and isolation requirements with the gain initially set low to avoid equipment (and ear) damage. It is strongly advised to use a mesh pop-filter to avoid moisture from damaging the capsule.


Unpack your MXL 990 microphone carefully and verify that all of the following items are included:

• MXL 990 microphone

• Shock mount

• Carrying case

• Hard mount mic stand adapter

If any of these items are missing or damaged, contact the company from which you purchased the microphone.

Power Requirement

The MXL 990 requires 48V phantom power (± 4V). If no sound is picked up by the microphone, make sure that the phantom power on your mixer or separate power supply is switched on.

Microphone Cable

The microphone cable can have a profound effect on the sound of any microphone. Even the finest microphone will sound poor if the interconnect cable allows noise to enter or causes distortion and loss of information. We recommend that you use the best microphone cable that your budget will allow.


Dust and foreign material can reduce the performance of a microphone over time, so you should store the MXL 990 in its case when not in use.

Shock Mount

The MXL shock mount can shift in shipment. Simply shift the nylon bands to center the microphone in the assembly. Be sure that the wire clamp does not rest on the chassis of the mount, as this impairs mechanical isolation. Slide the mount all the way to the rim of the microphone for the most secure hold.



Frequency Response

Polar Pattern



Equivalent Noise

S/N Ratio

Max SPL for 0.5% THD

Power Requirement

Current Consumption



Metal Finish

Pressure-gradient condenser mic.

30 Hz–20 kHz


200 ohms

15 mV/Pa

20 dB (A-weighted IEC 268-4)

80 dB (Ref. 1Pa A-weighted)

130 dB

48V phantom power (± 4V)

< 3.0mA

60mm x 130mm / 2.36 in. x 5.11 in.

1.2 lbs / 544.3g


Frequency Chart Polar Pattern


MXL microphones are guaranteed against defects in materials and workmanship for one year from the date of purchase. If you encounter any problem with this unit, promptly contact the company from which you purchased it for assistance. The original dated sales receipt will be necessary for any warranty claim. Do not send any unit directly to us without prior authorization from our service department. Warranty coverage is limited to repair or replacement (at our option) of the microphone, and does not cover incidental damages due to use of this unit, nor damage caused by accidental misuse of this product.


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