McIntosh C1100 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 HR085.
NOTES
PERFORMANCE SPECIFICATIONS
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
Total Harmonic Distortion
0.005% maximun from 20Hz to 20,000Hz
(High Level Inputs)
0.05% maximun from 20Hz to 20,000Hz
(Phono Inputs)
Rated Output
5V Balanced, 2.5V Unbalanced (Main Outputs)
Maximum Voltage Output
20V RMS Balanced, 10V RMS Unbalanced
Sensitivity (for rated output)
High Level, 450mV Unbalanced, 900mV Balanced
Phono MM, 4.5mV
Phono MC, 0.45mV
Signal To Noise Ratio (A-Weighted)
High Level - 107dB (Below rated output)
MM Phono - 77dB (Below 5mV input)
MC Phono - 79dB (Below 0.5mV input)
Input Impedance
High Level - 44K ohms Balanced
22K ohms Unbalanced
Phono MC - 25, 50, 100, 200, 400 or 1,000 ohms;
220pF
Phono MM - 50 to 800pF, in 50pF steps;
47K ohms
Maximum Input Signal
High Level, 20V Balanced, 10V Unbalanced
Phono MC, 10mV
Phono MM, 100mV
Voltage Gain
High Level to Main, Output1 and 2: 15dB
High Level to Rec/Fixed Output: 0dB
Phono MC to Rec/Fixed Output: 60dB
Phono MM to Rec/Fixed Output: 40dB
Output Impedance
200 ohms Balanced
100 ohms Unbalanced
Headphone Load Impedance (Selectable)
16 - 40 ohms, 40 - 150 ohms, 150 - 600 ohms
Headphone Voltage Gain (From Main Output)
16 - 40 ohms, 0dB
40 - 150 ohms, 6dB
150 - 600 ohms, 12dB
Headphone Output
150mW minimum from 16 ohms to 600 ohms load
Power Control and Trigger Output
12VDC, 25mA
Tube Complement
12 Tubes, Six - 12AX7A and Six - 12AT7
High level - one 12AX7A and two 12AT7 (per channel
viewed from Front Panel Window)
Phono MC - one 12AX7A and one-half 12AT7
(per channel viewed from the Top
Cover Window)
Phono MM - one 12AX7A and one-half 12AT7
(per channel viewed from the Top
Cover Window)
Power Requirements
Field AC Voltage conversion of the C1100 is not possible. The
C1100isfactoryconguredforoneofthefollowingACVoltages:
100 Volts, 50/60Hz at 75 watts
110 Volts, 50/60Hz at 75 watts
120 Volts, 50/60Hz at 75 watts
220 Volts, 50/60Hz at 75 watts
230 Volts, 50/60Hz at 75 watts
240 Volts, 50/60Hz at 75 watts
Standby Power, less than 0.5 watts
Note: Refer to the rear panel of the C1100C Controller for the
correct voltage.
Overall Dimensions
Width is 17-1/2 inches (44.45cm)
Height is 6 inches (15.2cm) including feet
Depth is 19 inches (48.3cm) including the Front Panel, Knobs and
Cables
Weight
C1100C Controller - 27 pounds (12.3 kg) net,
42 pounds (19.5 kg) in shipping
carton
C1100TPreamplier-25pounds(11.3kg)net,
39 pounds (17.7 kg) in shipping
carton
Shipping Carton Dimensions
Width is 27 inches (68.6cm)
Height is 12 inches (30.5cm)
Depth is 25 inches (63.5cm)

McIntosh C1100 Specifications

General

Type	Preamplifier
Total Harmonic Distortion	0.005%
Frequency Response	20Hz to 20kHz +0, -0.5dB
Input Impedance	44K ohms
Output Impedance	200 ohms
Dimensions	Each chassis: 17-1/2" (44.45cm) width x 6" (15.24cm) height (including feet) x 18" (45.72cm) depth (including front panel and cables)
Rated Output Voltage	2.5V RMS
Phono Inputs	2 (MM/MC)
Balanced Outputs	2
Unbalanced Outputs	2
Maximum Voltage Gain	15dB
Gain	60dB (MC Phono); 40dB (MM Phono)
Inputs	High Level, Phono
Outputs	Balanced, Unbalanced