User Manual

Thank you for selecting the Opus 81 condenser microphone.
Please take some time to read carefully through this product information
before setting up the equipment.
Applications
The Opus 81 has been designed for the use in studio and on
stage applications. It can be used for vocals and instrument miking.
Powering
The Opus 81 needs power to operate and requires a phantom
supply between 12 and 48 V. It can be connected to any microphone
input supplying this voltage.
Version
Model Description . . . . . . . . . . . . . . . . . . . . . Order #
Opus 81 Condenser microphone (back electret),
cardioid, incl. MKV 108 mic clamp . . . . 455.369
Optional Accessories
Stands
GST 400 Microphone stand 3/8",
height 0.90-1.65 m
with G 400 boom. . . . . . . . . . . . . . . . . . . . . 421.294
GST 500 Microphone stand 3/8",
height 0.80-1.60 m
with extensible G 500 boom. . . . . . . . . . . 406.252
Pop Screen
PS 81 Pop screen, charcoal-grey. . . . . . . . . . . 407.593
Technical Specifications
Transducer type . . . . . . . . . . . . . . . . . . . . Condenser (back electret)
Operating principle . . . . . . . . . . . . . . . . . pressure gradient
Frequency response . . . . . . . . . . . . . . . . . 50 - 18,000 Hz
Polar pattern . . . . . . . . . . . . . . . . . . . . . . Cardioid
Open circuit voltage at 1 kHz . . . . . . . . . 3.2 mV/Pa
Nominal impedance . . . . . . . . . . . . . . . . . 190 Ω
Nominal load impedance . . . . . . . . . . . . . ≥ 1000 Ω
Max. SPL at 1 kHz. . . . . . . . . . . . . . . . . . . 138 dB
S/N ratio rel. to 1 Pa . . . . . . . . . . . . . . . . . 60 dB
A-weighted equivalent SPL . . . . . . . . . . . approx. 26 dB
Power supply . . . . . . . . . . . . . . . . . . . . . . 12 - 48 V phantom
Current consumption . . . . . . . . . . . . . . . . approx. 3 mA
Connection . . . . . . . . . . . . . . . . . . . . . . . . XLR 3-pin male
Weight without cable . . . . . . . . . . . . . . . 265 g