Comrex STAC6 mainframe

  • $1,600.00

  • Brand: Comrex
  • Model Number: STAC6 mainframe
  • Product Code: BS16981
  • Quantity in stock: 1
  Usually dispatched in 2-4 working days

STAC is a telephone talk management system that puts you in control of your talk shows, call-ins and phoners with great sound, ease of operation and scalable configuration.


 STAC incorporates a pair of Comrex high-performance digital hybrids with automatic audio level control. The result is the most natural sounding telephone audio, even when conferencing multiple callers. A compact, rack-mounting mainframe houses the hybrids, the multiline controller and all telephone and audio connections.


 Call screening and control are available from any networked computer, using a standard web browser, with the included STAC IP. With STAC IP, your talent can host their shows from anywhere there is an Internet connection or you can economically create more control points from any computer on your local network.


 The STAC interface features a clean, logical design, which allows functions to be mastered quickly. Dedicated buttons, with associated multicolor LEDs, minimize the number of button presses and make it easy to determine status of phone lines and callers.


Key STAC Features

Dual, high performance digital hybrids for reliable, natural sounding caller audio, even when conferencing.

Configurations for six phone lines. Easy to expand in field.

 Flipping a switch on the back of a control surface is all that is required to select Studio/Producer or Screener Mode.

A standard web browser can be used on any locally networked or Internet connected computer for call screening and control.

Auto Attendant for automatically answering incoming calls with your custom outgoing message. Call is answered after two or six rings, the message is played and, at the end of the message, the line is put on hold. If no message is recorded, lines will automatically be answered and put on hold. Function selected from control surface.


Two phone lines can be assigned to VIP mode, removing them from the priority rotation and Auto Attendant. These can be reserved for placing outgoing calls and incoming hot lines.

Selectable auto-disconnect of calls termintated by caller.

Selectable automatic gain control for consistent levels on-air and send audio down the line to your callers. A separately controllable caller level boost may also be used.Talent can maintain "control" of the conversation by using selectable caller ducking that lowers caller audio level when talent speaks.


Technical Details

STAC Configuration

    STAC6 Complete System includes mainframe for six phone lines and one six-line STAC control surface

            STAC Mainframe Rear panel connections

              Send input—XLR female: 0 dBu nominal, adjustable, balanced, bridging, 20 kΩ impedance

                Caller 1 and 2 outputs—XLR male: 0 dBu nominal, adjustable, balanced, 50 Ω impedance

                  Telco lines—Two x RJ-45 connectors per six phone lines: POTS (plain old telephone service) line, analog extension from a PBX

                    Auto-disconnect—Disconnects on loop drop or loop reversal. User selectable.

                      Key service compatibility—Any key system providing true tip and ring compatibility to telephone instruments

                        Tip/ring switching—Solid state relay

                          Loop-through to PBX—Two x RJ45 per six phone lines

                            Hybrid expansion port—RJ-45

                              Control surface—Four x RJ-45

                                Network connection—10Base-T Ethernet

                                Hybrid Performance

                                  Telephone transmit
                                  • Frequency response: 250 Hz to 3.5 kHz, ±1 dB • Signal-to-noise ratio: >56 dB
                                  • Distortion: <0.2%

                                    Telephone receive

                                      Frequency response: 250 Hz to 3.5 kHz, ±1 dB

                                        Signal-to-noise ratio: >56 dB

                                          Distortion: <0.2%


                                            • Send-to-caller separation: 55dB nominal

                                            Power and physical

                                              Internal supply: Switchable100/240 VAC 50/60 Hz

                                                Dimensions: 19" W x 11.5" D x 3.5" H

                                                (48.26cm x 29.21cm x 8.89 cm)

                                                  Weight: 12.5 lb (5.75 kg) 

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