McIntosh C8 User Manual

5
5. The C8 Preamplifier has four Small Vacuum
Tubes that are inserted into special Vacuum Tube
Sockets on the Stainless Steel Chassis. Refer to
Figure E.
Each of the Tube Sockets have four pin openings
to accept the Vacuum Tube Shield Covers. Refer
to Figure F.
Carefully install the Vacuum Tube Shield Covers
into each of the Vacuum Tube Sockets orienting
the Shield so the “Mc” on top of the Shield is
facing forward. Refer to Figures G and H.
Figure E
WA R N I NG:
The supplied Vacuum Tube Shield
Covers must be installed over
each of the four Small Vacuum
Tubes before the C8 Preamplifier
is connected to AC Power and
activated for use!!
Failure to do so has the potential
to cause physical harm to human
beings and animals.
This could also result in damage
to the Vacuum Tubes and the C8
Internal Circuitry.
It also prevents the potential of a
Fire Hazard, resulting in damage
to the C8 and the surrounding
environment.
Special Vacuum Tube Sockets
Figure F
Vacuum Tube
Shield Covers
Pin Openings
7-
17.9cm
VOLUME
INPUT
HHEEAA DDPPHHOO NNEESS
PP UUSSHH -- TTRRIIMM PP UUSSHH -- PPOOWWEERR
CC 88 TT UU BB EE PP RR EE AA MM PP LL II FF II EE RR
Figure G
Figure H

McIntosh C8 Specifications

General

Type	Vacuum Tube Preamplifier
Output Impedance	200 ohms Unbalanced
Input Impedance Unbalanced	50K ohms
Voltage Gain High Level	15dB
Signal to Noise Ratio Phono	75dB
Tube Complement	4 x 12AX7A
Frequency Response	20Hz to 20kHz +0, -0.5dB
Total Harmonic Distortion	0.08%
Input Impedance	50k ohms
Signal to Noise Ratio	100dB
High Level Inputs	4 Unbalanced
Phono Inputs	2
Rated Output Voltage	2.5V
Headphone Output	Yes
Outputs	2 Unbalanced