Manual McIntosh C52 Pre-amplifier

Manual

4

nation of the Power Output Meters

on McIntosh Power Amplifiers. A

3.5mm stereo mini phone plug is

used for connection to the Power

Control, Trigger and PASSTHRU

Outputs on the C52.

Note: The Power Control, Trigger,

PASSTHRU and Data Connecting Cable is avail-

able from the McIntosh Parts Department:

Power Control, Trigger, PASSTHRU and Data

Cable Part No. 170-202

Six foot, shielded 2 conductor, with 3.5mm stereo

mini phone plugs on each end.

Data Port Connectors

The C52 Data Out Ports send Re-

mote Control Signals to Source

Components. A 3.5mm stereo

mini phone plug is used for con-

nection.

IR IN Port Connectors

The IR IN Port also uses a 3.5mm

stereo mini phone plug and allows

the connection of other brand IR

Receivers to the C52.

RS232 Data Port Cable

The RS232 Data Cable is a 3.5mm stereo mini phone

plug to a subminiature DB 9 connector:

General Information and Connector Information

Connector and Cable Information

XLR Connectors

Below is the Pin configuration for the XLR Balanced

Input and Output Connectors on the C52. Refer to the

diagrams for connections:

PIN 1: Shield/Ground

PIN 2: + Output

PIN 3: - Output

Power Control and Trigger Connectors

The C52 Power Control Out, Trigger and PASSTHRU

Output Jacks send Power On/Off Signals (+12 volt/0

volt) when connected to other McIntosh Components.

An additional connection is for controlling the illumi-

Data

Signal

N/C

Data

Ground

PIN 2 PIN 1

PIN 3

PIN 1

PIN 2

PIN 3

1. For additional connection information, refer to the

owner’s manual(s) for any component(s) connected

to the C52 Audio Preamplifier.

2. The Main AC Power going to the C52 and any

other McIntosh Component(s) should not be applied

until all the system components are connected

together. Failure to do so could result in malfunc-

tioning of some or all of the system’s normal opera-

tions. When the C52 and other McIntosh Compo-

nents are in their Standby Power Off Mode, the

Microprocessor’s Circuitry inside each component

is active and communication is occurring between

them.

3. Balanced and Unbalanced Inputs and Outputs can

be mixed. For example, you may connect signal

sources to Unbalanced Inputs and send signals

from the Balanced Outputs. You can also use Bal-

anced and Unbalanced Outputs simultaneously,

connected to different Power Amplifiers.

4. The C52 internal Digital to Analog Converter

Circuitry is designed to decode 2-channel PCM

(Pulse Code Modulation) and DSD (Direct Stream

Digital) Digital Signals. The Coaxial and Optical

Digital Audio Inputs are for PCM Digital Signals.

The Digital DIN and USB Audio Inputs are for

PCM and DSD Digital Signals. Other Digital Audio

Signal Format Types will cause the Audio Outputs

of the C52 to be muted and the Front Panel Infor-

mation Display will indicate an error message.

5. Sound Intensity is measured in units called Deci-

bels and “dB” is the abbreviation.

6. The McIntosh C52 is factory configured for imme-

diate use. It can also be customized to complement

the components making up your system. Refer to

the C52 “Setup Mode” starting on page 13 for ad-

ditional information.

General Information

Power

Control

Meter

Illumination

Control

Ground

Main, Triggers 1-4

and PASSTHRU

7. The Remote Control Supplied with the C52

Preamplifier is capable of operating other com-

ponents. For additional information go to www.

mcintoshlabs.com.

8. The IR Input, with a 3.5mm mini phone jack, is

configured for non-McIntosh IR sensors such as

a Xantech Model HL85BK Kit. Use a Connection

Block such as a Xantech Model ZC21 when two or

more IR sensors need to be connected to the C52.

The signal from a connected External IR Sensor

will have priority over the signal from the Front

Panel IR Sensor.

9. When discarding the unit, comply with local rules

or regulations. Batteries should never be

thrown away or incinerated but disposed

of in accordance with the local regula-

tions concerning battery disposal.

10. For additional information on the C52 and other

McIntosh Products please visit the McIntosh Web

Site at www.mcintoshlabs.com.

IR Data

Control

Ground

N/C

PIN 1

PIN 6

PIN 5

PIN 9

Data In

(DB9-pin2)

Ground

(DB9-pin5)

Data Out

(DB9-pin3)

DB9

(male connector)

Rating

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