XP 20 Owners Manual Rev 0.4 8
ended inputs and outputs. There are three pairs of outputs available with identical gain
structure. One pair Balanced, two pairs single-ended. You may use more than one
output at a time.
The single ended outputs are paralleled, but under most circumstances will drive
several devices at once, with no anticipated ill effects by virtue of the XP-20’s low output
impedance and high current capability. The balanced outputs are derived from their
own circuit elements, independent of the single ended outputs. Tape input
communicates back to the input bus, independent of the XP-20 volume control.
Balanced inputs and outputs are via XLR connectors. Single-ended inputs and
outputs are via RCA connectors. On the XLR connectors, pin 1 is grounded, pin 2 is the
positive signal, and pin 3 is the negative signal. Left channel RCA connectors are
marked with "L". Right channel RCA connectors are marked with "R". In a similar
fashion balanced XLR inputs and outputs are marked with "L" for left and "R" for right
channel.
The main outputs are located at the left-hand side (viewed from the rear) of the rear
panel, two male XLR connectors, and four RCA connectors, "R" (right) and "L" (left).
The RCA connector's ground (shell) is in parallel with pin 1 of the XLR outputs and the
RCA hot is fed from an independent summing junction that maximizes the X circuit
benefits. The RCA, single-ended, outputs are buffered from the balanced outputs.
You may use both the single ended and balanced outputs at the same time. On the
XLR, pin 1 is ground, pin 2 is positive, and pin 3 is negative.
The XP-20 has an onboard tape loop for those of you who like to record, add a signal
processor into the chain or simply need one additional pair of RCA inputs to complete
your music system. The tape loop is available only from the remote control and is
selected or deselected by a single keystroke of the “Tape” button on the remote. When
you select Tape from the remote the display shows a lower case letter “t” on the right
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