McIntosh MA6500 - Manual (Page 13)

13
How to Operate, con’t
Speakers 1 and 2
Press SPEAKERS 1 or 2 push-buttons to switch the two
pairs of speakers
on or off. You can
press either push-
button individu-
ally, or both to-
gether. Refer to
figure 13.
Headphones Jack
Connect a pair of dynamic headphones to the Headphones
Jack for private listening. Press Mute to mute all other out-
puts including the amplifier connected to the loudspeakers.
Refer to figure 13.
Reset of Microprocessors
In the event that the controls of the MA6500 stop function-
ing, push the POWER switch OFF and wait about two min-
utes. Then push the POWER switch ON followed by push-
ing the STANDBY/ON push-button. This will reset the
MA6500 microprocessors and the Integrated Amplifier
should be functioning normally.
Note: The above condition is usually caused by either
interruptions in AC power and/or major changes that
may occur in AC power line voltage.
Using a Separate Power Amplifier
There are two different ways to use a separate power am-
plifier with a MA6500. The first way is to use the separate
amplifier instead of the MA6500 built-in power amplifier.
Connect the loudspeakers to the separate power amplifier
and set the rear panel POWER AMP INPUT Switch to the
EXT position. Refer to figure 14.
Note: When a separate power amplifier
is connected to the MA6500 and
the POWER AMP INPUT Switch
to the EXT position, the MA6500
Front Panel SPEAKERS Push-
button Switches will no longer
function.
The second way is to use both a separate power amplifier
and the MA6500 built-in power amplifier. Connect one
pair of loudspeakers to the separate power amplifier and
the second/third pair to the MA6500. Set the rear panel
POWER AMP INPUT Switch to the INT position. Refer to
figure 14.
Note: The MA6500 VOLUME Control will affect the sound
level of all the loudspeakers.
How To Make A Tape Recording
1. Select the source signal you wish to record with the
appropriate Front Panel input push-button. If you wish
to record from an Audio/Video source connected to the
optional McIntosh Audio/Video Selector Audio/Video
Selector, using the Remote Control, select the desired
source connected to the McIntosh Audio/Video Selec-
tor. Refer to figure 15.
2. Adjust the record level using the tape recorder volume
control and proceed with the recording process.
3. To listen to the tape playback of the program source
just recorded, press the TAPE input push-button.
Note: The MA6500 TAPE OUTPUTS are not affected by the
VOLUME or BALANCE controls.
Power Output Meters
The MA6500 Power Output Meters indicate the power de-
livered to the loudspeakers and are based on using 4 and 8
ohm loudspeakers. The meters respond to all the musical
information being produced by the amplifier. They indicate
to an accuracy of at least 95% of the power output with
only a single cycle of a 2000Hz tone burst. Refer to table
below.
Figure 13
Figure 15
Figure 14
Meter
Reading
Actual Power
Output
(4 ohms)
Actual Power
Output
(8 ohms)
200 200 Watts 100 Watts
20 20 Watts 10 Watts
2.0 2 Watts 1 Watts
.20 0.2 Watts 0.1 Watts
.02 20 Milliwatts 10 Milliwatts