Owners Manual

24
The C47 OUTPUT 1 and 2 along with the TONE
Front Panel Push-buttons are active when in the
Passthru Mode. The other Front Panel Controls and
Push-buttons are deactivated as long as the Passthru
Mode is active.
Headphones Jack
Connect a pair of dynamic headphones to the Head-
phones Jack with a 1/4” (0.635cm) stereo phone type
plug for private listening. The default setting is for all
of the Power Amplifier Output Connections (Main, 1,
2, and 3) to automatically mute.
When headphones are connected to the C47 Front
Panel Jack, an additional TRIM function becomes
available. McIntosh’s HXD brings the acoustical
depth and spatiality of music normally heard with
loudspeakers, to your headphones. Momentarily press
the INPUT Control, then rotate it to select “HEAD-
PHONE HXD, Off”. To activate the HXD Mode
rotate the VOLUME Adjust Control until the Front
Panel Display indicates “HEADPHONE HXD, On”.
Refer to figures 83 and 84
Note: The Headphone Output is optimized for imped-
ances ranging from 100 to 600 ohms.
How to Operate the C47, con’t
The C47 USB Input is compatible with PC Com-
puters using Microsoft®, Windows 7 (SP1), Windows
8.1 and Windows 10. It is also compatible with Ap-
ple® Macintosh® Computers using OS-10.6.8 or later.
When using a PC Computer with Windows, a spe-
cial McIntosh USB Audio Software Driver needs to be
installed on the PC Computer. The driver needs to be
installed before connecting the C47 USB Input to the
USB Port on the computer.
Note: If an Apple Macintosh computer is used with the
C47, no additional driver is required.
The McIntosh USB Audio Windows Driver is
available for download from the McIntosh Web Site:
http://www.mcintoshlabs.com/us/Support/Pages/
Manuals.aspx
Under “PRODUCT CATEGORY” select “Pre-
amplifiers” then under “MODEL NUMBER” select
“C47”. Click on “SEARCH” then select “McIntosh-
HD USB Audio Windows Drive D v1.0 and download
the PC Windows Driver. Follow the instructions below
to install the McIntosh C47 Driver:
Purpose: To Install the McIntosh
USB Audio Windows Driver for use with
McIntosh Products with an USB-Digital
Audio Input.
Requirements: 1. A PC Computer with a functioning
USB Port.
2. Windows 7 (SP1 or greater),
Windows 8 (8.1) or Windows 10
Operating System.
3. An USB Cable with Type A to
Type B Connectors.
How To Make a Recording
1. Select the desired signal source you wish to record
by using the Front Panel INPUT Control or us-
ing the INPUT UP / DOWN Push-button on the
Remote Control.
2. Adjust the record level using the recorder level con-
trol and proceed with the recording process.
3. Listen to the playback of the program source just
recorded by selecting the Input Source connected to
the recorder component output.
Optical and Digital Inputs
When a Digital Input (Optical or Coxial Connection)
on the C47 is selected, the Front Panel Information
Display indicates the sampling frequency when a
signal is present. Refer to figure 90. During the time
there is no Digital Signal present the display will indi-
cate “SILENT”. Refer to figure 91.
USB Input Operation and Driver Installation
The C47 USB Input provides the capability to play-
back music from a computer, when the computer is
connected to the rear panel USB connector.
Note: The USB Input is for direct connection to a com-
puter only. To playback music from an USB Drive,
connect the USB Drive to another USB Port on
the computer and select the USB Drive with the
Media Playback Program.
Figure 88
HEADPHONES HXD
Off
Figure 89
HEADPHONES HXD
On
Figure 90
INPUT: COAX 1
30% 48kHz
Figure 91
INPUT: COAX 1
30% SILENT
Figure 87
PASSTHRU