FreeSpeak Architecture
• The architecture employs a client-server model where the System Core/Base functions as the central audio engine and configuration server of the system. Beltpacks act as clients, offloading all mixing and routing logic to the Core/Base while providing audio input and output to the system.
• The Beltpack serves as the primary user interface, sending routing and volume commands to the System Core/Base for execution. The Core/Base processes these requests centrally and immediately updates the Beltpack’s local display and tallies to reflect the active system state.
• The system uses either the 1.9GHz DECT protocol or 2.4GHz FHSS, employing Time Division Multiplexing, for wireless transmission.
• Devices connect via a pairing mechanism where the Beltpack identifies and joins the system by detecting transceiver beacons that match its stored System ID.
• Roaming is entirely beltpack-driven, with the beltpack autonomously monitoring RF conditions to trigger connection changes. It performs a seamless “make-before-break” handoff, crossfading audio between transceivers before releasing the old link to ensure continuity.
• E1 Transceivers bridge the wireless transmission to the wired by converting wireless audio into E1 multiplexed point-to-point connections for connection to System Core/Base along with synchronization and power.
Capacity
FreeSpeak Wireless Intercom
(10) E1 Transceivers (1.9, 2.4 GHz)
(5), (10), or (25) Beltpacks1 (1.9, 2.4 GHz)
Configuration
- (12) Channels
- (12) Groups
- (50) Roles for FreeSpeak
Connectors
Headset: 4-pin XLR-M (X4), 5-pin XLR-F (X5)
2-Wire I/O: (4) XLR-3F
4-Wire I/O: (4) RJ45
Audio Crossover Mode: Software selectable AES-72 Type 3M Pinout: To Panel - 1: Out, 2: In or To Matrix - 1: In, 2: Out
Program Audio Input: XLR-3F
Stage Announce Output: XLR-3M
GPIO: (1) DB15F (2 GPI, 4 GPO)
FreeSpeak II E1 TCVR/SPL Ports: (2) RJ45, (2) SFP (RJ45 or SFP selectable)
FSII DECT Synchronization: (2) RJ45 (Input and Output)
LAN: (2) RJ45
AC Power Connector: IEC-C14
DC Power Connector: KPJX-4S-S
Grounding Screw: Terminal
Note: While mechanically identical, SFPs are designed with different properties for data rates, power and fiber cable type. Please refer to the Clear-Com SFP Compatibility Chart for compatible SFP transceivers.
Controls and Indicators
Front Panel:
(4) OLED Displays
(2) Power Supply Status LED
(1) Headset Mic Button
(1) Front Panel Mode Button
(1) Menu Access Button
(4) Encoders for Menu & Level Control
(4) Call & Talk Buttons
(1) Stage Announce Button
(1) All Talk Button
(1) Remote Mic Kill Button
(2) Status LEDs
(1) Main Listen Level Encoder
(1) Program Audio Level Encoder
Rear Panel:
(2) LAN RJ45 Link/Activity LEDs
(2) FSII E1 TCVR RJ45 Link/Activity LEDs
(4) 2-Wire Power / Configuration Indicator LEDs
Microphone Input
Input Type: Dynamic/Electret – Selectable
Headset Mic Voltage: 5V
Input Level (nominal): -58dBu
Input Level (max): -10dBu
Frequency Response: 300Hz to 22kHz ±3dB
Mic Limiter Threshold: -35dBu ±3dB
Mic Limiter Range: ≥ 20dB
4-Wire Line Level Interfaces:
Transformer balanced input and output
AES-72 Type 3M Audio Pinout
To Panel/Base 1: Output, 2: Input
To Matrix 1: Input, 2: Output
Input:
Nominal Level: 0dBu (adjustable -12dB to +12dB)
Maximum Level: +18dBu
Frequency Response: 80Hz to 22kHz ±3dB
Impedance: >= 10KΩ
Output:
Nominal Level: 0dBu (adjustable -12dB to +12dB)
Maximum Level: +18dBu
Frequency Response: 80Hz to 22kHz ±3dB
Impedance: 120Ω + 10%
2-Wire Partyline Interfaces
Unbalanced High-Impedance bridging
Compatibility: Clear-Com, RTS-TW with Call and Remote Mic Kill
Termination: Optional per pair (A/B or C/D)
Nulling: User initiated Auto-Calibration
Null Depth: >60dB at 12kHz
Nominal Level: CC: -18dBu, RTS-TW: -12dBu (adjustable -3dB to +3dB)
Headroom: 18dB
Frequency Response: 80Hz to 12kHz ±3dB
Impedance: >= 10KΩ bridging
Total Harmonic Distortion (THD): < 0.1% THD @ 1 kHz
Power: 400mA optional per pair (A/B or C/D)
Voltage: 26-28V DC
Use Encore Partyline Power Calculator to validate power requirements of the analog partyline intercom system
1The FreeSpeak Icon Beltpack does not connect to the FSII-BASE-II
Frequency Response
Headset Mic: 300Hz to 22kHz
Headset Speaker: 50Hz to 18kHz
FreeSpeak II: 200Hz to 7.1kHz
4-Wire: 80Hz to 22kHz
2-Wire: 80Hz to 12kHz
Logic Inputs – GPI
Assignable to activation of audio crosspoints
Input: 2
Style: Opto-Isolated. Powered input, close contact to ground
Input Voltage Range: 0 - 12V DC or AC
Input Current: >=1mA required
Logic Outputs – GPO/Relay
Assignable to talk, call keys, audio crosspoints or call
Style: SPDT / Power Relay
Normalized: Open or Closed, separate pins
Switching Voltage (Max): 60V DC
Switching Current (Max): 2A
Power
AC Internal Power Supply:
Input Voltage Range: 100 - 240V AC
Input Frequency Range: 50 - 60Hz
Input Power (Max): 48W
BTU (Max): 164BTU/h
Input Power Connector: IEC-C14
DC Power Input: Voltage: 12V DC ± 5%
Current (Max): 4A
Power (Max): 48W
BTU (Max): 164BTU/hr
Input Power Connector: KPJX-4S-S
This unit can be powered via DC input using:
AC Adapter - Inline:
Type: PSU-EXT-002 (supplied)
Input Voltage Range: 100 - 240V AC
Input Frequency Range: 50 - 60Hz
Input Power Connector: IEC-C14
Output Voltage: 12V DC ± 5%
Output Current (Max): 5A
Output Power (Max): 60W
Output Power Connector: KPPX-4-P
Environmental
Operating: 32° to 113°F (0° to 45°C)
Storage: -22° to 158°F (-30° to 70°C)
Humidity: 20-90% Non-Condensing
Dimensions
1RU
19 x 1.7 x 10.2in (WxHxD)
(482.6 x 43.2 x 259.0mm)
Weight
5.57lbs (2.5kg)