JK Audio PBXport User Manual

Page 5

Other Information

Screw Terminal Block
1 - Speaker (+) Minimum 8 ohms, 1 watt max

2 - Speaker (-) Use together with terminal 1

3 - Ground

4 - OH LED Supplies +4.3 VDC, 40 mA steady signal during

an Online call.

5 - Online (NO) Pull this pin to ground momentarily to simu-

late pressing the

Online button.

6 - Handset (NO) Pull this pin to ground momentarily to

simulate pressing the Handset button.

Contact your JK Audio dealer for additional information.

Helpful Hints:
PBXport will not work with any telephone that has a keypad

in the handset.

If using a mixer you must use a "mix-minus" signal to the

Send input (Page 5)

You must set the A-B-C switch to the correct handset type

position for your particular telephone. (page 8)

You may use either front or back panel handset jacks but not

simultaneously.

Don't overdrive the Send input. Flashes of the -3 Red Send

LED indicate distortion, clipping and reduced separation.

If your telephone has an adjustable receiver volume control,

you should set this control to the "normal" position. If the
Receive audio meter on the PBX port is showing the red
–3 dB LED, you should turn down the volume on the base
of your telephone until you see only green LEDs.

Connection—Mix-Minus Setup

Number of mics
depends on mixer

Caller to any
line level input

Aux Send to Send 1,
Mic/Line button in (Line)

Use Main Outputs,
USB or Firewire
connectors to
send audio to
recording device,
or broadcasting
equipment inputs

For whichever input channel you have the Caller connected to, turn the
corresponding Aux control to minimum (usually hard left). All other Aux
controls should be set for what you want to send to the phone line. Each
Aux Send bus is completely separate from all other outputs, so these Aux
controls will not affect what is heard on the Main outputs or on any other
Aux buses. This Aux Send bus should be pre-fader, so you can use the
fader controls to set the levels of each channel to the main output.