McIntosh MA12000 User Manual

14
Connecng for Bi-Amplicaon
The MA12000 Power Amplifier Circuitry, together
with an additional separate Power Amplifier, may
be used to Bi-Amplify a Loudspeaker System. In
the illustration on this page, the Power Amplifier of
the MA12000 is connected to the Midrange/High
Frequency Section of the Loudspeaker. The additional
separate Power Amplifier is connected to the Low
Frequency Section of the Loudspeaker System.
Warning: The Loudspeaker System used for
Bi-Amplification must have the
jumpers removed from between the
MID/HIGH and LOW Frequency
Sections of the Loudspeaker System.
Failure to remove them could result
in damage to the MA12000 and/or
the separate Power Amplifier.
MA12000 Connections:
1. Remove the “McIntosh Jumpers” from between
the OUTPUT 1 Jacks and the PWR AMP In Jacks
located on the Rear Panel of the MA12000.
Note: Place the “McIntosh Jumper” in a safe place
for possible future use.
2. Using a pair of shielded RCA Type Audio “Y”
Adapters connect the OUTPUT 1 Jacks to the
PWR AMP In Jacks, for both Left and Right
Channels.
3. Connect the remaining unconnected part of the
“Y” Adapters to the separate Power Amplifier.
4. Referring to “How to Connect Loudspeakers”
on page 15, and the owner’s manuals for your
Power Amplifier and Loudspeaker, connect the
MA12000 Binding Post to the Loudspeaker MID/
HIGH Input Terminals.
Note: The Loudspeaker Connection illustrations
on this page are for the Left Channel.
Connect the Right Channel Loudspeaker in
the same manner.
PU S H PU S H P US H
PU S H
FUSE
PUSH
MA12000 INTEGRATED AMPLIFIER
McINTOSH LABORATORY, INC., BINGHAMTON, NY
HANDCRAFTED IN USA WITH US AND IMPORTED PARTS
R OUTPUT
8Ω
4Ω
2Ω
CLASS 2 WIRING
R
L
OUTPUT 2
BALANCED INPUTS
2R 2L 1R
1L
L OUTPUT
8Ω
4Ω
2Ω
CLASS 2 WIRING
DATA PORTS
3
1
4
2
IR IN
RS232
EXT
CTRL
POWER CONTROL
OUTPUTS
MAIN
TRIG 1
PASSTHRU
INPUT
TRIG 2
SERVICE
PORT
120V 50/60Hz
6.6A
T 10AH 250V
FIXED 1 PWR AMP 1
2
OUTPUTS
UNBALANCED INPUTS
3 4 5 6
L
R
LR
GND
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
SERIAL
NUMBER
L
R
GND
MC
MM
PHONO
ATTENTION: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
USB AUDIO
DA2 DIGITAL AUDIO MODULE
HDMI (ARC)
COAX 2
COAX 1
MCT
OPTICAL 2OPTICAL 1
DIGITAL AUDIO INPUTS
SERIAL
NUMBER
+
-
Left Channel
Loudspeaker
“Y” adapter Cable

McIntosh MA12000 Specifications

General

Number of Channels	2
Total Harmonic Distortion	0.005%
Preamplifier Output	1 balanced, 1 unbalanced
Digital Inputs	2 coaxial, 2 optical, 1 USB, 1 MCT
Home Theater PassThru	Yes
Tone Controls	Yes
Tone Bypass	Yes
Power Output	350 Watts per channel
Frequency Response	20Hz to 20kHz +0, -0.5dB
Dimensions	17.5" (44.45cm)
Damping Factor	40
Headphone Output	Yes
Phono Input	1 Moving Magnet, 1 Moving Coil
Power Requirement	120V, 60Hz
Standby Power Requirement	Less than 0.5 Watt
Input Impedance	20K ohms (unbalanced), 40K ohms (balanced)
Preamplifier Inputs	1 Balanced, 4 Unbalanced