McIntosh C45 owner manual Tone Bypass, Bass and Treble Controls, Channel Mode, Trim and Trim Level

TRIM push-button until the word and number “BALANCE 00” appears on the Alphanumeric Display, then press the TRIM LEVEL UpS or DownT Push-button to emphasize the Left Channel or the Right Channel. Refer to figures 35a, 35b and 41. The Front Panel Display indicates the balance changes in steps from 0 to 107. After approximately 3 sec- onds the Alphanumeric Display returns to the indicate the Source Selection and Volume Level. To verify the balance setting without changing it, just press the TRIM Push-but- ton to select Balance.

Note: The Balance may also be adjusted using the TRIM and LEVEL UpS or DownT Push-buttons on the Remote Control Refer to figure 42.

Figure 35a

Figure 35b

Tone Bypass

Press the TONE BYPASS Push-button to totally bypass the Tone Control Circuitry, providing a flat frequency response. If the AUTOTONE circuit is set to the On position in Setup Mode, the C45 will remember for each input whether the Tone Bypass is active.

Bass and Treble Controls

Adjust the BASS and TREBLE controls to suit your listen- ing preferences. The Bass or Treble intensity can be in- creased with clockwise rotation and decreased with counter- clockwise rotation. All tone control circuit elements are re- moved from the signal path when the controls are in the center or flat position.

Note: The Bass and Treble controls affect the Front Left and Right Channels only.

6 Channel Mode

When a 6 Channel Input has been assigned to one of the eight inputs and that Input is selected, the C45 will auto- matically switch to the 6 Channel Mode and the red Led above the 6 CH MODE Push-button will illuminate. If the 6CH MODE Push-button is pressed at that time the C45 will revert back to the 2 Channel Mode and the Audio Sig- nal present at that Input’s Left and Right 2 Channel jacks will be heard instead.

Note: The C45 will retain the choice of 2 Channel Mode until either the 6CH MODE Push-button is pressed when the

C45 is on that six channel Input or the C45 is switched Off and then On. If the optional TM1 Tuner Module is installed into the C45, the 6CH MODE (ENTER) Push- button is also used to enter AM/FM Radio Station(s) into Preset Memory. Refer to page 31 for additional information.

Trim and Trim Level

When the C45 is in the 2 Channel Mode and the 2CH SUB Mode is set to ON in the Setup Mode, the TRIM and TRIM LEVEL Push-buttons provide the means for adjusting the Subwoofer Volume Level separately from the main left and right channels. Refer to page 19 for changing the 2CH SUB Mode. If an Input is assigned as a 6 Channel Input, there are Volume Trim Adjustments for the Center, Subwoofer and Surround Channels.

The Trim Adjustments can be accomplished from either the Front Panel Controls or with the supplied Remote Con- trol. There is a ± 12dB range of volume adjustment for each of the Trim Selections.

The C45 has separate Subwoofer Trim Levels for both the 2CH and 6CH Modes of operation. It will also reset the Center, Subwoofer and Surround Trim Levels to 0dB when the C45 is turned Off. The Front Panel Alphanumeric Dis- play indicates the Trim Mode Selected and Trim Levels. Re- fer to figures 40 and 41.

Note: If the optional TM1 Tuner Module is installed into the C45, AM/FM Radio Stations may be selected by using the TRIM LEVEL (TUNE) UpS or DownT Push- buttons. Refer to page 30 for additional information.

1.Press and release the TRIM Push-button until “SUB 0.0” appears on the Front Panel Display.

Note: Low Frequency Information must be present in the Program Source Material in order to hear any changes in the Subwoofer Levels.

2.Press the LEVEL UpS Push-button until “SUB 4.5” appears on the Front Panel Display. This is an example of increasing the Subwoofer Channel Level by 4.5dB.

Refer to figure 36.

Figure 36

3.Select an Input that is assigned with a 6 Channel Input Source, making sure that the LED above the 6CH MODE Push-button is illuminated.

4.Press and release the TRIM Push-button until “CEN-

TER 0.0” appears on the Front Panel Display.

5.Press the LEVEL UpS Push-button until “CENTER 3.5” appears on the Front Panel Display. This is an ex- ample of increasing the Center Channel Level by 3.5dB.

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