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JK Audio Four IFB User Manual

Multi line phone bridge
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Four IFB
Multi Line Phone Bridge
User Guide
JK Audio

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Summary of Contents for JK Audio Four IFB

  • Page 1 Four IFB Multi Line Phone Bridge User Guide JK Audio...

  • Page 2: Important Safety Instructions

    Important Safety Instructions Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not expose this unit directly to water. Although this unit is designed to be as moisture repellent as possible, it is not in- tended to be used unprotected in the rain, under water, etc. This unit is neither 100% water proof nor water tight.
  • Page 3 DTMF keypad. No external dialer is needed. Four IFB is designed to be used in a variety of environments and weather conditions. Although the unit is not "waterproof", all con- trols and components are dust and moisture resistant. A non-...
  • Page 4 Quick Setup Guide 1. Connect AC power to the unit with the provided AC cable. The AC power LED should light green. 2. Connect up to four ana- log (POTS) telephone lines to the RJ-11 jacks. 3. Connect a handset to the monitor handset jack and/or connect the Monitor Send and Receive XLR jacks to your...
  • Page 5 Quick Setup Guide 5. Turn on the Power switch. The power LED should light red. 6. Rotate the Monitor selector switch to the desired Line position. Line 1 = phone line connected to RJ-11 marked Line 1. 7. Press the Add button. This will take the selected line off-hook.
  • Page 6 Quick Setup Guide (continued) 9. Use the IFB 1-4 rotary switches to select which phone line audio will be sent to the corresponding IFB XLR output jack. Example: Setting IFB 1 rotary switch to “Line 4” will send audio from phone line 4 to the IFB XLR output 1.
  • Page 7 Quick Setup Guide (continued) 11. To drop a call, rotate the Monitor selector switch to the desired Line position. Line 1 = phone line connected to the RJ-11 marked Line 1. Press the Drop button. This will drop (hang up) the call on the selected line.
  • Page 8 Features...
  • Page 9 Features Operation (continued) 1. IFB Receive volume controls - Controls the level of audio present on the corresponding IFB XLR output jacks. 2. Monitor Receive volume control - Controls the level of audio pre- sent on the Monitor Receive XLR output jack. 3.
  • Page 10 Features (continued)
  • Page 11 Features (continued) Operation (continued) AC power jack - 100-240 VAC power jack Monitor Send XLR input - Line level input for sending audio down the phone line designated as Monitor. This is a line level input and will NOT accept a microphone directly. To use this input to send audio you must provide a line level signal from a device such as a mixer or mic pre-amp.
  • Page 12 Features (continued)
  • Page 13 Cover locks into place with ½ turn of lock- ing latch. Battery - Slide out compartment for a single 9 VDC battery. All active functions of the Four IFB require that AC or battery power is present and that the Power Switch is in the “On” position.

  • Page 14: Operation

    Add button. The corresponding line LED will now light constant green. NOTE: There is no audible ringer on the Four IFB. Dropping Calls To drop an active call you must first select the corresponding phone line with the Monitor rotary selector switch.
  • Page 15 IFB 3 and 4 XLR outputs will contain audio from phone line 2 (if active). Power Loss Four IFB provides the option of using a 9VDC battery as backup to AC power. If AC power is lost, the 9VDC battery will become the active power source until AC power is restored.
  • Page 16 Simplified Block Diagram...

  • Page 17: Specifications

    Specifications Operation (continued) Inputs: Line: Balanced Female XLR, 20k ohm, +4 dBu max Outputs: Line: (5) Balanced Male XLR, 600 ohm, Line level, +4 dBu max Handset: RJ-22 handset jack biased for electret handset (not included) Phone Line: (4) RJ11C Isolation: 1500 VAC Ringer:...

  • Page 18: Fcc Part 15 Compliance

    Changes or modifications not expressly approved by JK Audio can void the user's authority to operate the equipment. FCC Registration Your new JK Audio product has been registered with the Federal Communications Commission (FCC). This product complies with the standards in Part 68 of the FCC rules.
  • Page 19 FCC. Your telephone company may make changes in its facilities, equipment, operations or procedures that could affect the proper functioning of your JK Audio product. If such changes are planned, you'll be notified by your telephone company.

  • Page 20: Warranty

    Warranty Four IFB is covered by a 2-year warranty to be free from defective workmanship and materials. In the event that the Four IFB needs repair, you must call us to get an authorization, and then carefully pack and ship it to us. You will pay for shipping to us and we will pay for return back to you, UPS ground.

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