Clock Audio AM 81 User Manual

AM 81 Automatic Microphone Mixer

Operation and Installation Manual

version 2.0

www.clockaudio.com

Contents:

Introduction ----------------------------------------------- 03

Product Overview --------------------------------- 04~05

1 Features
2 Front Panel Layout
3 Rear Panel Layout
4 LCD Panel and Controls
5 Dimensions

Connecting your AM 81 ------------------------------- 06

1 Power
2 Microphone Inputs
3 Master Output
4 Pre-Amplifier Outputs
5 External Control Function
6 Expansion Options

Installation and Set-Up --------------------------------- 07

1 Priority Channel Configuration
2 Priority State
3 Reset

Detailed Settings ---------------------------------- 08~09

1 Switching for Pre-Amplifier Output
2 Gate Attenuation Adjustment
3 Maximum Gate Attenuation
4 Limiter Switch
5 Adjusting Limiter Levels
6 Output Levels
7 NOMA Settings
8 NOMA Level Adjustment
9 Phantom Power

Final Checklist -------------------------------------------- 11

Technical Specification -------------------------------- 11

Security & Safety ---------------------------------------- 11

02

Introduction:

Clockaudio AM 81 is an 8 channel automatic microphone mixer ideal for
multi channel microphone systems in conference and voice reinforcement
applications.

By automatically sensing when a channel becomes active the AM 81 will simply
control the level of the system dependant on the priority settings, the NOMA
(number of open microphones Attenuated) function will also control and adjust
the mixer output to prevent feedback due to open microphone channels.

Expansion is easily achieved with up to 15 units able to be cascaded for medium
to large system applications (120 microphones maximum).

03

Product Overview:

1 Features

• 8 x Microphone Inputs

• 1 x Aux/Music Input

• Individual Priority settings

• Main Output (Balanced)

• 8 x Individual Pre-Amp Outputs

• Simple LCD Display (to view and change settings and functions)

• Automatic or Manual operation.

• NOMA facility (number of open microphones Attenuated)

• Link In /Link Out for multi system use.

• Free Standing Case supplied with optional 1U 19” Rack Mount Kit as standard.

2 Front Panel Layout

See Drawing and numbered features.

6

1

2

345

7 8

1 Output Level Indicator
2 LCD & Control Panel
3 Monitor Earphone Level Adjustment
4 1/4 Headphone Socket

3 Rear Panel Layout

See Drawing and numbered features.

1 3 4

1 Fused Mains IEC Input
2 MIC Inputs
3 Pre-Amp Outputs
4 Master Audio Output

2

5 Master Output Signal Indicator
6 Master Output Level Adjustment
7 Channel Input Gain
8 Power Switch

657

5 Cascade/Link Ports IN
6 Cascade/Link Port OUT
7 External Control Port

04