Mark Levinson 433 owner manual Balanced Input, RS-232Communications Port, Communication Ports

Nº433 Power Amplifier

4. Balanced Input

Provides left, center and right-channel audio input. One XLR connector per channel is available to accept balanced input signals from an associated preamplifier.

For best performance, use balanced connections whenever possible. Refer to the illustration below and to the associated preamplifier documentation to ensure that Nº433 XLR input pin assignments correspond to the associated preamplifier XLR output pin assign- ments. If not, wire the cable so that the appropriate input pin connects to the appropriate output pin.

Note

Pin 1: Signal ground

Pin 2: Signal + (non-inverting)

Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

Before making balanced connections, remove the U-shaped shorting- straps between pins 1 and 3 on the Nº433 XLR inputs and save them for possible future use. Shorting-straps are installed when the Nº433 is shipped.

5. RS-232 Communications Port

17

Note

Provides serial control, performing flash memory software upgrades and facilitating external control in AMX™ and Crestron™ systems. One connector labeled RS-232 is available.

6. Communication Ports

Provide “links” to compatible Mark Levinson preamplifiers and power amplifiers, allowing the Nº433 and linked preamplifiers or power amplifiers to share Link controls. Two (one 8-pin RJ-45 and

one six-pin RJ-11) modular jacks labeled input and output are available.

The input communication port can be connected to a compatible Mark Levinson preamplifier that offers Link or communication ports. Both the input and output communication ports can be connected to a compatible Mark

Levinson power amplifier that offers communication ports.

Refer to “Linking” on page 20, BEFORE linking the Nº433 to other Mark Levinson components.