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Overview:
The “Audio-Pod System with IFB Receive” is a microprocessor controlled Microphone
On-Off control system with an integrated headphone amplifier and IFB Receive
capabilities which is ideal for remote and talk studio applications. The Mic ON/OFF
buttons may be top or front mounted depending on the application. The latching
Microphone On-Off circuitry incorporates a high quality, low noise pre-amplifier with
available switched 48VDC phantom power. The IFB received audio has a separate
input amplifier for isolation and is applied to the headphone amplifier mixing buss.
Individual gain controls for Program and IFB audio are provided. The stereo program
audio is connected using a 3.5mm mini jack on the rear panel, and the IFB single ended
audio is applied at the rear terminal block. (Refer to figure 1) “Cough” muting is
controlled by depressing and holding the “Mic ON” button.
An Audio-Pod system consists of from one to four Audio-Pod modules and a Power
Supply. One Power Supply will supply power for up to four Audio-Pod modules, and the
modules may include any of the available variety of options. 10 foot Power Supply
cables, mounting screws for the power supply module and a trim-pot adjustment tool
are supplied.
Optional permanent table top tilt mounting brackets for the Audio-Pod modules are also
available.
The Microphone circuit and Mic on-off control portion includes the following features:
•
Large LED differentially lighted Mic-On and Mic-Off and constantly lit
Talk-Back long life reed type silent push buttons
•
Cough-mute function integrated with Mic-On button (Operational with
local control mode enabled)
•
Local Mic On-Off feature may be disabled and controlled remotely
•
Remote control of Mic on-off function with a logic low or contact closure
may be accomplished with either local control enabled or disabled
•
Microphone
XLR in and XLR out connectors as well as Eurostyle screw
terminal block termination of Mic out connection for permanent
installations
•
Solid State Relay driving voltage, continuous or flashing, to drive a
DME Solid State Relay Pack or customers own solid state relay for
ON-AIR lamps or for external LED indicator (multiple Audio-Pod SSR
outputs may be connected in parallel in the continuous mode only)
•
Precision metal film resistors used throughout audio chain for low noise
and stability
•
Quality low noise mic preamp with user adjustable rear panel variable
gain control with output ranging from mic to line level
•
Phantom power supplied with rear panel switch and LED indicator
The integrated headphone amplifier section includes the following features:
•
Voltage Controlled Amplifier (VCA) circuitry employed (no “dirty” pots)
for the program audio.
