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26
Passthru
The C2700 will automatically turn On and switch to
the previously setup Passthru Input when the McIn-
tosh A/V Processor or Multichannel Surround Decod-
er is turned-on. The Audio Preamplifier Front Panel
Alphanumeric Display will indicate “PASSTHRU”.
Refer to figure 92.
The C2700 OUTPUT 1 and 2 Front Panel Push-but-
tons are active when in the Passthru Mode. The other
Front Panel Controls and Push-buttons are deactivated
as long as the Passthru Mode is active.
Headphones Jack
Connect a pair of dynamic headphones to the Head-
phones Jack with a 1/4” (0.635cm) stereo phone type
plug for private listening. The default setting is for all
of the Power Amplifier Output Connections (Main, 1,
and 2) to automatically mute.
When headphones are connected to the C2700
Front Panel Jack, an additional TRIM function be-
comes available. McIntosh’s HXD brings the acousti-
cal depth and spatiality of music normally heard with
loudspeakers, to your headphones. Momentarily press
the INPUT Control, then rotate it to select “HEAD-
PHONE HXD, Off”. To activate the HXD Mode
rotate the VOLUME Adjust Control until the Front
Panel Display indicates “HEADPHONE HXD, On”.
Refer to figures 88 and 89 on page 25.
Note: The Headphone Output is optimized for imped-
ances ranging from 100 to 600 ohms.
Mute
Press the MUTE Push-button, on the C2700 Front
Panel or on the Remote Control, to Mute the Audio
in all outputs (Main, Output 1, Output 2 and Head-
phones) except the FIXED OUTPUT. The Front Panel
Information Display will indicate the Source Name
and the word MUTE in place of the actual volume set-
ting. Refer to figure 90.
Pressing the Mute Push-button a second time or
adjusting the volume control (either the Front Panel or
Remote Control) will unmute the C2700.
Tone Controls
Press the Front Panel TONE Push-button to activate
the C2700 TREBLE and BASS Tone Control Cir-
cuitry for the currently selected Input Source. The
LED above the TONE Push-button will illuminate. To
bypass the TONE CONTROL CIRCUITRY for the
currently selected Input Source press the TONE Push-
button. The LED above the TONE Push-button will
extinguish.
Refer to figure 60, on page 22 . The C2700 remem-
bers for each selected Input whether the Tone Control
Circuitry is active or bypassed.
Note. The audio signal present at the FIXED OUT
Jacks is unaffected by the TONE Circuitry.
Output 1 and 2
Press the Front Panel OUTPUT 1 or OUTPUT 2
Push-button or use the Remote Control and press the
SETUP/BLUE Push-button followed by the OUTPUT
1 or OUTPUT 2 Push-button, to send audio to sepa-
How to Operate the C2700, con’t
rate Power Amplifiers connected to the rear panel
OUTPUT 1 or 2 Jacks. It also activates the POWER
CONTROL TRIGger 1 or 2 Jacks on the rear panel
of the C2700. To stop the Audio and Power Control
Signals from going to the separate Power Amplifiers,
press the same Push-button(s) a second time.
Trim
Momentarily press the Front Panel INPUT Control to
activate the C2700 Trim Functions. Rotate the INPUT
Control to select the desired Trim Function and then
use the VOLUME (adjust) Control to change the Trim
setting. Refer to figure 60 on page 22. The Remote
Control TRIM and LEVEL UP / DOWN Push-buttons
may also be used. Approximately 8 seconds after Trim
Function Selection and/or adjustments have stopped,
the C2700 will switch the Trim Mode Off.
Output Meters
The C2700 Output Meters indicate the Output Level
in Decibels (dB) available at the MAIN, OUTPUT 1
and 2 Connectors/Jacks to drive Power Amplifiers.
Refer to figure 91.
The Meters are calibrated in dB (decibels) and respond
to all the peaks contained in the musical information.
A meter reading of 0dB indicates the C2700 is deliver-
ing its rated output.
Figure 90
INPUT: BAL 1
MUTE
Figure 91
Figure 92
PASSTHRU
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