U-81 OCTAVO Eight Discrete UHF Channels Wireless Microphone System OW N ER ’ S M A NUAL
TABLE OF CONTENTS TABLE OF CONTENTS.................................................................................................... 2 INTRODUCTION............................................................................................................... 2 USING THIS MANUAL..................................................................................................... 2 SYSTEM FEATURES........................................................................................................
SYSTEM FEATURES U-81 OCTAVO Wireless Receiver • Operates on select UHF frequencies on 902-928MHz and 944-952 MHz bands • Eight independent single-channel UHF wireless receivers in a single housing for simultaneous operation for up to eight transmitters • Front panel LED display indicates the RF and AF status for each channel • Ch 1-8 individual balanced fixed XLR MIC level outputs and adjustable Unbalanced LINE level SUM 1⁄4” jack output for 8-in-1 MIX audio output with separate volume control for each cha
U-81 OCTAVO RECEIVER OPERATING INSTRUCTIONS 1. Rack-Mounting The Receiver The U-81 OCTAVO receiver has pre-drilled holes for rackmounting. Simply attach the Rack Mount Ears (1) on each side and fasten with supplied screws. Note: Do not mount the receiver in a rack directly above an amplifier or other source of high heat. This could degrade the performance of the U-81 OCTAVO. Always ensure adequate airflow and heat dissipation in any rack configuration. 2.
U-81 OCTAVO RECEIVER OPERATING INSTRUCTIONS unbalanced mixer input. Make sure the Phantom Power on your mixing board in turned off and the volume in turn down when making the audio connections. Start the receiver VOLUME at minimum and adjust until the level is optimal. • For each channel you wish to use, insert an audio cord with a XLR female plug into its Balanced XLR out (9) jack on the back of the receiver. Plug the other end of this cord into your amplifier, effects or mixing board.
UH-81 HANDHELD MIC TRANSMITTER 7. UH-81 Transmitter Set Up • Release the Battery cover (11) by pressing the locking tab and slide down as per arrow, exposing the Battery holder (12). Insert two fresh AA alkaline or NiMH batteries, observing the correct polarity as marked, and slide the battery cover back on to the microphone. Make sure the cover is closed completely.
UB-81 BODYPACK MIC TRANSMITTER 8. UB-81 Transmitter Set Up • Install by battery for the UB-81 transmitter by snap-opening the Battery door (15) and inserting a fresh 9V alkaline or NiMH battery into the Battery compartment (16), observing the correct polarity. Close the battery door to its original position and completely cover the battery.
UB-81 BODYPACK MIC TRANSMITTER • Adjust the volume of the receiver as per the Connecting Audio Outputs, section 6 of the U-81 OCTAVO receiver instructions above. [Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so that acoustic feedback (howling and screeching) will be avoided. Please also note the pickup pattern characteristics of the microphone selected. Omni directional mics pick up sound equally from all directions, and are prone to feedback if not used carefully.
UB-81 BODYPACK MIC TRANSMITTER 25 15 18 24 23 22 17 16 19 20 21 9
CAUTIONS AND TROUBLESHOOTING 10. No Audio If you are not getting audio through the U-81 OCTAVO system, slide the transmitter POWER or MUTE (STDBY) switch to ON, carefully check all connection and system setup. Check or replace transmitter battery. Check that the receiver is powered. The receiver and transmitter must be set to operate on the same RF channel. 11.
TIPS • If the Volume Control of the receiver is set too high, it may overdrive the input of the mixer, causing distortion. Conversely, if the output is set too low, the overall signalto-noise ratio of the system may be reduced. Adjust the output level of the receiver such that the highest sound pressure level going into the microphone causes no input overload in the mixer, and yet permist the mixer level control to operate in the normal range (not too high and not too low).
SPECIFICATIONS OVERALL SYSTEM PERFORMANCE RF Carrier Frequencies......................................................... Selected factory installed frequencies between 902-928MHz and 944-952MHz Frequency stability . ........................................................................ +/-0.005% (Crystal Controlled) Audio Deviation...............................................................FM +/-20kHz normal, +/-50kHz maximum Frequency Response.........................................................
U-81 OCTAVO FREQUENCY PLAN 902-928MHz and 944-952MHz CH 14 906.000 CH 15 908.500 CH 16 911.700 CH 17 921.300 CH 10 944.200 CH 11 945.100 CH 12 947.300 CH 13 949.800 PLEASE NOTE: In order to ensure optimum operation of the U-81 receiver the antennas must be installed as follows: The antenna labeled “902-928MHz” should be mounted on the right antenna jack on the rear panel and the antenna labeled “944‑952MHz” on the left jack.
SERVICE INFORMATION In the U.S. If you are experiencing operational problems with your system, please refer to the Support page at www.nady.com for assistance. Should your wireless system require service, please contact the Nady Service Department at (510) 652-2411 for a Return Authorization (R/A) Number and service quote (if out of warranty). Make sure the R/A Number is clearly marked on the outside of the package that you are returning.
ONE-YEAR LIMITED WARRANTY Nady Systems, Inc. warrants to the original consumer purchaser that the above unit is free from any defects in material or workmanship for a period of one year from the date of original retail purchase. If any such defect is discovered within the warranty period, Nady Systems, Inc. will repair or replace the unit free of charge, subject to verification of the defect or malfunction upon return to Nady Systems.
6701 Shellmound Street | Emeryville, CA USA 94608 T 510.652.2411 | F 510.652.5075 | www.nady.
