Mark Levinson 500H User Manual

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Mark Levinson
8
Audio Channel Inputs
One balanced and one single-ended (unbalanced) connector is 
available for each audio channel input.
Single-Ended Inputs
The RCA connectors accept single-ended signals from preamplifiers 
with singled-ended (RCA) outputs. A small toggle switch is 
provided to select either the balanced (XLR) or single-ended (RCA) 
input connector on each channel.
If your preamplifier does not support a balanced connection to the 
power amplifier, connect the single-ended output to the RCA input 
on the amplifier. Make sure the toggle switch is set to the position 
closest to the RCA connector.
Balanced Inputs
Accepts a signal from a preamplifier with balanced outputs via the 
high quality XLR connector. Make sure the toggle switch is set to 
the position closest to the XLR connector.
The pin assignments, shown on the left, of the XLR-type female 
input connector are consistent with the standards adopted by the 
Audio Engineering Society. Refer to the operating manual of your 
preamplifier to ensure that the pin assignments of its balanced 
output connectors correspond to the Mark Levinson power 
amplifier. If not, wire the cables so that the appropriate output pin 
connects to the equivalent input pin.
The Nº531H, 532H and 533H utilize custom-made, gold-plated, 
high-current loudspeaker binding posts, two for each output 
channel. The Nº535H uses different high-current binding posts 
due to space constraints. The positive binding posts, labeled + 
(positive), are red; the negative binding posts are black and are 
labeled – (negative).
Ensure when connecting the loudspeaker that at least one positive and 
one negative binding post is used. There is NO ground reference.
Be careful to not short the positive and negative outputs 
together. Do not short the positive or negative outputs to chassis 
or any other safety ground. The amplifier must be powered off 
during installation and whenever input and/or output cables are 
being connected.
Push
Pin 2
Pin 1
Pin 3
Balanced (female XLR) 
Input Connector
Pin Assignments:
  Pin 1: Signal Ground
  Pin 2: Signal + (non-inverting)
  Pin 3: Signal - (inverting)
  Connector Shell - Chassis Ground
Loudspeaker Binding 
Posts
Note
Caution!