Specifications

PRODUCT PREVIEW
C40
Audio Control Center
Project 653
• One Main and Two Switched Audio Outputs
• Speaker Switching Through SCR3
• Headphone Jack
• Balanced Audio Output
• Balanced Audio Input
• Internal Compandor
• Internal 20 Watt Monitor Power Amplifier
Contents
Promotional Highlights 1
Features and Benefits 1
Performance Specifications 2
Front Panel Controls 3
Rear Panel Information 5
Technical Description 5
Front Panel Drawing 8
Rear Panel Drawing 9
Promotional Highlights
• Logic Driven Electro Magnetic Switching
• Separate LISTEN and RECORD Input Selection
• Nine Program Source Selections
• More Illuminated Glass Area on Front Panel
• Exclusive Mclntosh Five Frequency Equalizer Circuit
• Active Variable Loudness Compensation
• Dual Processor Loops
• Precision Volume Control
• Double Shielded Power Transformer
• Electronically Regulated Power Supply
• Four Switched and One Unswitched AC Outlet
• Auto Muting
Features and Benefits
LOGIC DRIVEN ELECTROMAGNETIC SWITCHING
DIGITAL LOGIC integrated circuits drive ELECTRO-
MAGNETIC SWITCHES for the most reliable, lowest
distortion signal switching available today.
SEPARATE LISTEN AND RECORD INPUT SWITCHING
Two independent input selectors that allow for
recording from one source while listening to another.
GOLD PLATED INPUT AND OUTPUT JACKS
Gold plating is chosen because of superior corrosion
resistance.
NINE PROGRAM SOURCE SELECTIONS
LINE. PHONO/AUX, CD1, CD2, TUNER, TAPE 1
TAPE 2, TAPE 3 for both LISTEN and RECORD.
MORE ILLUMINATED GLASS AREA
The front panel is all glass with control nomenclature
illuminated, even for the push buttons.
EXCLUSIVE MclNTOSH EQUALIZER CIRCUIT
The equalizer circuit provides 12dB of boost or cut
at 30, 150, 500, 1500 and 10,000Hz. However, at
the center position of the control, it automatically and
completely removes all equalizer circuit components
from the signal path.
ACTIVE VARIABLE LOUDNESS COMPENSATION
Loudness compensation can be added at any setting
of the VOLUME control making it independent of
program level. Its circuit elements are removed from
the signal path when the control is full CCW.
DUAL PROCESSOR LOOPS
Separate processors can be used for RECORD and
LISTEN.
MclNTOSH LABORATORY INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903