Thank you for purchasing the MXL 840 Pair of small diaphragm instrument
microphones. With proper care, these mics will provide many years of satisfaction. For best results, please take a few moments to review this literature.
Enjoy your microphones!
The MXL Team
General Characteristics
Care
Dust and foreign material can degrade the performance of a microphone over time so always store the unit in its case. 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. These steps will help keep the mic in proper working order and sounding its best for many years to come.
The MXL 840 has a 22mm capsule 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) damaging suprises!
Shockmount
The high isolation shockmount may shift during shipping. Simply shift the elastic 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 shockmount up the body of the microphone and stop in the middle for the most secure hold.
Contents
Unpack your MXL 840 Pair of microphones carefully and verify that all of the following items are included:
•MXL 840 microphone (Qty. 2)
•Shockmount (Qty. 2)
•microfiber cleaning cloth
Specifications
Type
Capsule Size
Frequency Range
Polar Pattern
Sensetivity
Impedance Equivalent Noise Level Max SPL for .5% THD S/N Ratio
Power Requirements Weight
Size
Metal Finish
Pressure gradient condenser microphone 22mm
30 Hz – 20 kHz Cardoid
15mV/Pa 110 Ω
20dB (A weighted IEC
74dB (Ref. 1Pa
22mm x 134mm (0.87” x 5.28”) Shark skin and Silver
If any of these items are missing or damaged, contact the company from which you purchased the microphone.
Power Requirement
IMPORTANT - This unit requires phantom power at 48 volts, ± 4 volts. 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.
Frequency Chart | Polar Pattern |
| 270 |
0
90
180
Microphone Cable
These microphones connects to a mixer or preamp via XLR cable (not included). 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. We recommend Mogami cable for the best results.
Warranty
Marshall microphones are guaranteed against defects in material and workmanship for one year from the 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.
