McIntosh MCD550 Service Manual

2
1. Unless otherwise noted, all voltages indicated on the
schematics are measured under the following conditions:
a. AC input at rated voltage marked on rear panel.
b. All voltages are +/-10% with respect to ground. A
high impedance (10 megaohm) voltmeter must be used.
2. Unlessotherwisespecied:
a. Resistor values are in ohms.
b. Capacitor values are microfarads (uF).
c. Inductor values are in microhenries (uH)
3. On PC board drawings, Square pad indicates:
a. Polarized Capacitors - Positive
b. Diodes - Cathode
c. Others - Pin 1
4. WARNING
Parts marked with the symbol have critical
characteristics. Use only replacement parts recom-
mended by the manufacturer.
5. Use McIntosh Remote Control Model HR065.
NOTES
PERFORMANCE SPECIFICATIONS
Audio Specications
Disc Formats
CD, SACD, MP3 and WMA
Fixed Output level
2.0Vrms Unbalanced
4.0Vrms Balanced
Variable Output level
0 - 8.0Vrms Unbalanced
0- 16.0Vrms Balanced
Output Impedance
600 ohms Unbalanced and Balanced
Frequency Response
4Hz to 40,000Hz, +0.5, -2dB (SACD)
4Hz to 20,000Hz, ±0.5dB (CD)
Signal to Noise Ratio
Better than 110dB (A-weighted)
Dynamic Range
Better than 100dB
Harmonic Distortion
0.002% @ 1000Hz (SACD)
0.002% @ 1000Hz (CD)
Channel Separation
Better than 98dB (1,000Hz)
Headphone Output Impedance
47 ohms
Headphone Load Impedance
16-600 ohms
Digital Audio Specications
Digital Input Format
SPDIF (PCM1)
Digital Input Sample Rate
Coaxial: 16, 24-Bit/96kHz
Optical: 16, 24-Bit/192kHz
USB: 16, 24-Bit/192kHz
Digital Inputs
Coaxial: 0.5V p-p/75 ohms
Optical: - 15dbm to -21dbm (TOS Link)
USB: USB Type B Connector
Digital Output Format
SPDIF (PCM1)
Digital Output Sample Rate
Up to 24-Bit/192kHz
Digital Output
Coaxial: 0.5V p-p/75 ohms
Optical: - 15dbm to -21dbm (TOS Link)
1 PCM (Pulse Code Modulation) Digital Signal type used
for CD Discs
General Specications
Transport
Laser Type: Twin Beam
Laser Beam Wavelength: 650nm (SACD)/790nm (CD)
Laser Power: CLASS IIa/CLASS I
Power Requirements
100 Volts, 50/60Hz at 35 watts
110 Volts, 50/60Hz at 35 watts
120 Volts, 50/60Hz at 35 watts
220 Volts, 50/60Hz at 35 watts
230 Volts, 50/60Hz at 35 watts
240 Volts, 50/60Hz at 35 watts
Standby: Less than 0.5 watt
Note: Refer to the rear panel of the MCD550 for the correct
voltage.
Overall Dimensions
Width is 17-1/2 inches (44.4cm)
Height is 6 inches (15.2cm)
Depth is 19 inches (48.3cm) including the Front Panel,
Knobs and Cables
Note: When the Disc Tray is opened, the panel clearance re-
quired in front of mounting panel is 6-3/4 inches (17.2cm).
Weight
28 pounds (12.7Kg) net, 42.5 pounds (19.2Kg) in shipping
carton
Shipping Carton Dimensions
Width is 26-1/2 inches (67.3cm)
Depth is 24-1/4 inches (62.2cm)
Height is 11-3/4 inches (29.9cm)

McIntosh MCD550 Specifications

General

SACD playback	Yes
CD changer	-
Device type	Personal CD player
Product color	Black, Silver
Channels quantity	2 channels
Playback disc types	CD
Frequency range	4 - 40000 Hz
Audio formats supported	MP3, WMA
Signal-to-Noise Ratio (SNR)	110 dB
Total Harmonic Distortion (THD)	0.0015 %
Package weight	19200 g
Volume control	Rotary

Weight and Dimensions

Depth	483 mm
Width	445 mm
Height	153 mm
Weight	12700 g