Marshall Electronics, Inc.
Product Innovation Through Technical Excellence!
1910 East Maple Ave. El Segundo, CA 90245
Internet: www.MXLmics.com
Thank you for purchasing the MXL 770 Condenser microphone. With proper care, this mic will provide
many years of satisfaction. For best results, please take a few moments to review this literature.
General Characteristics
This microphone has a twenty millimetre 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.
Power Requirements
IMPORTANT - This unit requires phantom power at 48 volts, +/- 4 volts. Each unit has been thoroughly
checked before shipping, so if you hear no sound, check that the phantom power on your mixer or separate
power supply is switched on! This microphone will not operate without supplying this external power.
Microphone Cables
The microphone cable can have a profound effect on the sound of any microphone. Even the finest
microphones will sound poor if the interconnect cable allows noise to enter, or causes distortion and loss of
information. Use only the best microphone cable your budget will allow.
Care
Dust and foreign material can degrade the performance of a microphone over time so always store the unit
in its case. Remove fingerprints from the exterior with a damp soft cloth. Clean the gold contacts
occasionally with a de-oxidant/cleaner.
TECHNICAL DATA
Type: Condenser pressure gradient mic with large 20 mm. diaphragm
Frequency Range: 30Hz-20kHz
Polar Pattern: Cardioid
Sensitivity: 15mV/Pa
Impedance: 150 ohms
S/N Ratio: 74dB (Ref. 1Pa A-weighted)
Equivalent Noise: 20dB(A weighted IEC 268-4)
Max SPL for 0.5% THD: 137dB
High Pass Filter: 6dB/octave, 150HZ
Attenuator Switch: 0/-10dB
Power Requirements: Phantom Power 48V ±4V
Current Consumption: <3.0mA
Size: 60mm x 154mm
Weight: 1 lb
Metal Finish: Black
Warranty
Marshall microphones are guaranteed against defects in material and workmanship for one year from date
of purchase. Should you encounter any problem with this unit, promptly contact the company you
purchased it from 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.
(1 pages)
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