6. INPUTS (A & B, XLR & RCA Type)
Two input connectors are provided for each channel: one RCA (phono) jack and one XLR-type female connector. Either connector may be used on a given channel, but both connectors for a single channel should not be used simultaneously.
Both inputs present a high impedance, and cause no appreciable loading to source outputs. Input sensitivity is –10 dBV (0.3 volt RMS) at the RCA inputs, and +1.3 dBu (0.9 volt RMS) at the XLR inputs, for rated output (with Input Level control at maximum). Pin assignments are as follows:
XLR-type | RCA-type |
Pin I = common | Shell= common |
Pin 2= 'high'(+) | Tip = 'high'(+) |
Pin 3= 'Iow'(–) | |
Virtually any line-level source may be connected to these inputs. (Refer to the 'Connection and Installation' section for further details.)
7. MODE switch
A single two-position slide switch (on rear panel) selects either monophonic BTL (Balanced Transformerless, also known as 'bridged', with switch set to BTL) or stereo operation (with switch set to STEREO).
If the MODE switch is not correctly set, damage to the loudspeakers or to the PA-30 may result. For a complete explanation of use of the MODE switch, consult the section on 'BTL Operation' on page 9 of this manual.
8. SPEAKERS (A & B)
A pair of color-coded locking terminals is provided for output connections to each channel of the PA-30. They will accommodate stripped bare wire, or tinned wine ends. The minimum allowable load impedance for each output is 8 ohms.
The actual output connection configuration will vary depending upon the mode of operation selected and the number and type of loudspeakers used. Please refer to the sections on 'BTL Operation' and 'Output Connections' before making connections to the PA-30 outputs.
9. Mains Power Cord
The inlet for AC power to the PA-30 is a two-prong ungrounded plug (rear panel mounted). The PA-30 requires 120/230 volts AC at 50/60 Hz. It draws 8 watts at idle, and 130 watts at full rated output.
