www.altronics.com.au
User manual revision number: 1.0 15/04/2013
Operating Manual
A 4911
2 Input Mixer With VOX Muting
Redback® Proudly Made In Australia
Distributed by Altronic Distributors Pty. Ltd.
Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au
OVERVIEW
The A 4911 is a compact 2 input mixer which will accept either a line level signal or balanced microphone signal for each
input. The output signal is suitable for feeding an amplifier with either a line level input or balanced microphone input.
Input one will VOX mute input 2.
INPUTS AND OUTPUTS
Line level inputs and outputs are via stereo RCA sockets. Balanced microphone inputs and outputs are via 3 pin Euro
blocks.
OPERATION
Any signal applied to input one, will VOX mute any signal applied to input 2 when the VOX DIP switch is enabled. This is
regardless of the type of signal ie line input signal feeding input 1 will VOX mute a mic input signal feeding input 2. When
the VOX DIP switch is not enabled, signals present at input 1 and 2 are mixed.
CONTROLS
Individual tamper proof controls are provided for input 1 volume, input 2 volume and VOX switch sensitivity. 24V DC out is
provided via a 2 way euro block when the VOX operates.
PHANTOM POWER
When the phantom power DIP switch is enabled, phantom power is applied to the hot and cold pins of the microphone
inputs.
SWITCHED 24V OUTPUT
24VDC output is turned on when both the 24V out and VOX DIP settings are in the ON position and the vox circuitry has
been activated.
FEATURES
• 2 inputs to one output
• Suitable for mic or line signals both in and out
• Input 1 VOX mutes input 2
• Separate controls for volume and VOX sensitivity
• VOX operated 24V DC output for control of external devices
• 24VDC operation via 2.1mm DC power jack
• Dimensions 131W x 30H x 77D mm
