FIGURE 3.
TELEPHONE: Connect telephone wires to the input screw terminals marked TIP and RING. Set TEL/MIC 1 Switch to
TEL position. For connection to unused CO trunk port, see Figure 7. For connection to CO line, Centrex line or Analog
Station port, a Wheelock TPI-100 Interface is required.
MICROPHONE: Connect balanced low-impedance microphone wires to the input screw terminals marked LO-Z. The
shield must be connected to the GND screw terminals. An unbalanced microphone may be connected to the same screw
terminals. However, one of the two LO-Z terminals for that input must be connected to the adjacent screw terminal
marked GND. Use an external piece of wire to form a jumper, and secure between one LO-Z screw terminal and the
GND screw terminal.
CAUTION:
TO AVOID POSSIBLE INTERFERENCE, THE MICROPHONE INPUT CABLE
MUST BE A SHIELDED CABLE WITH THE SHIELD CONNECTED TO GND.
MIC 2 is a dedicated input, while for MIC 1 input to be activated - the TEL/MIC 1 switch must be in the MIC 1 position.
With the selection mode switch in the MIC 1 position the TEL input is disconnected.
HI-Z INPUTS: AUX 1, AUX 2
FIGURE 4.
To connect an FM tuner, CD player or cassette to either the AUX 1 or AUX 2 input jacks, use a single conductor shielded
cable terminated in a standard RCA type phono plug.
The mode selector switch on the front panel must be set to either the AUX 1 or AUX 2 position.
TAPE/BOOSTER OUTPUT
FIGURE 5.
P81932 H
SHEET 4 OF 7
To connect a cassette recorder to the TPA-60 or TPA-100, use a single conductor shielded cable terminated in a
standard RCA type phono plug. One side will plug into the tape/booster output jack, while the other side will plug-in to the
RECORD INPUT jack of the cassette recorder.
