MXL 770 Instrument User Guide

Specifications <MXE
Type Pressure-gradient condenser mic.
Diaphragm 6 Micron gold-sputtered
Capsule Size 22mm/.87in. [ [ ()
Frequency Response 30 Hz-20 kHz
Polar Pattern Cardioid
Pre-Attenuation Switch 0 dB, -10dB
High Pass Filter 6 dB/ octave @ 150Hz
Impedance 150 ohms
Sensitivity 15 mV/Pa
Equivalent Noise 20 dB (A-weighted IEC 268-4)
S/N Ratio 74 dB (Ref. 1 Pa A-weighted)
Max SPL for 0.5% THD 137 dB
Power Requirement 48V phantom power (+ 4V)
Current Consumption <3.0mA
Size 59mm x 158mm/2.32 in. x 6.22 in.
Weight 1 1b/453.59g
Metal Finish Black with black grill
Frequency Chart Polar Pattern
+20 0
+10
0
270 (2 A 90
20 50 100 200 500 1K 2K 5K 10K 20K
-10
-20
-30
MXP Pressure-Gradient
A Division of Marshall Electronics
Phone: 310-333-0606 I 800-800-6608 H Fax: 310-333-0688 Condenser Microphone
www.mxImics.com HE [email protected]
770
Pressure-Gradient
Condenser Microphone
Thank you for choosing the MXL 770 Condenser microphone. For best results, please take a
few moments to read this manual and familiarize yourself with proper operation and care of this
microphone.
Contents
Unpack your MXL 770 Microphone package carefully and verify that all of the following items are
included:
MXL 770 Condenser Microphone
MX-57 Shockmount
Carrying Case
If any of these ¡items are missing or damaged, contact the company from which you purchased the
microphone.
General Characteristics
This microphone has a twenty millimetre gold-sputtered diaphragm and a fixed cardioid pickup
pattern. Condenser microphones are verysensitive, 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, in order to operate. Each unit
has been thoroughly checked before shipping, so if you do not hear sound, check 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.
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.
Bass Roll-Off Switch
The 770 features a bass roll-off switch to help reduce proximity effect. Proximity effect is
distortion that often occurs when a sound source is too close to the mic. Some microphone
patterns boost bass as you get closer to the micro-Phone; cardioid mics, for instance, tend to
boost bass. The bass roll-off switch reduces the low frequencies for a more full range sound.
-10dB Switch
The 770 can be used in very loud sonic environments without significant distortion. If you hear
distortion from the microphone, engage the “-10dB pad” on the rear of the microphone to the
-10dB position. You may also move the microphone farther away from the sound source.
Care
Dust and foreign material can degrade the performance of a microphone over time, so always store
the unit in its box. For vocals closer than 3”, use a pop filter or a foam windscreen to avoid getting
moisture on the diaphragm as this can substantially degrade the microphone’s performance. Store the
microphone in its original packaging in a cool, dry place along with the included packet of silica gel.
Warranty
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.
Specifications, Frequency Chart and Polar Pattern on next page.
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