User manual MCINTOSH C50

[. . . ] McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www. mcintoshlabs. com C50 Audio Preamplifier Owner's Manual The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. WARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. NO USER-SERVICEABLE PARTS INSIDE. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. [. . . ] Press and hold the EQ BYPASS/SETUP Pushbutton until the Setup Mode is active. Then press the OUTPUT 2 / MENU Push-button to select the Setup Menu item "SETUP: SOURCE INPUT, TUNER :RCA". Rotate the VOLUME/ADJUST Control until "SRVR : DIGITAL 1" appears on the Front Panel Information Display. Record Input Level Adjustment Source Components can have slightly different volume levels resulting in the need to readjust the C50 Volume Control when switching between different sources. The C50 allows the adjustment of levels for each of the Source Inputs for the same relative volume. The CD and SERVER Inputs are used in the following example. SETUP: SOURCE INPUT TUNER : RCA Figure 4 SETUP: SOURCE INPUT SRVR : DIGITAL 1 Figure 8 2. Rotate the INPUT Control until "CD2 : RCA" appears on the Front Panel Information Display. Refer to figure 5. any changes made to the various inputs from the default settings in the "Input and Power Control Settings" chart for future reference. To exit from the Setup Mode, press the EQ BYPASS/SETUP Push-button. SETUP: SOURCE INPUT CD2 : RCA Figure 5 3. Rotate the VOLUME/ADJUST Control until "CD2 : BALANCED 1" appears on the Front Panel Information Display. Refer to figure 6. SETUP: SOURCE INPUT CD2 : BALANCED 1 Figure 6 1. Rotate the INPUT Control to select the CD Input and adjust the VOLUME Control to the desired listening level. Press and hold the EQ BYPASS/SETUP Pushbutton until the Setup Mode is active. Then press the OUTPUT 2 / MENU Push-button until the Setup Menu item "LEVEL: CD 0. 0dB" appears on the Front Panel Information Display. The signal Level present at the RECORD OUT Jacks is unaffected by any changes in the Setup Level adjustment. They can be changed during operation of the C50 by performing a Trim Level Procedure, refer to page 19 for additional information. The second example will illustrate reassigning the SRVR (Server) Input from SRVR/REC Input (RCA Jacks) to the DIGital 1 Optical Input. Rotate the INPUT Control until "SRVR : RCA" appears on the Front Panel Information Display. Refer to figure 7. LEVEL: CD Min || Figure 9 0. 0dB Max SETUP: SOURCE INPUT SRVR : RCA Figure 7 Note: The CD Input is serving as a reference level or choose another source frequently listened to. The Input Source should be set to a reference Level (Trim) of 0. 0dB. 14 Setup, con't Display Brightness 3. Rotate the INPUT Control until "LEVEL: SRVR 0. 0dB" appears on the Front Panel Information Display. If necessary, rotate the VOLUME/ADJUST Control to obtain the same volume level as the CD Input by switching between the two Inputs using the INPUT Control. Rotate the INPUT Control until "LEVEL: SRVR _. _" appears on the Front Panel Information Display. [. . . ] At the center detent or flat position of the controls, the tone circuit components are removed from the signal path. The illustration to the right shows the fundamental frequency range of acoustical musical instruments and the human voice. It also shows the range of adjustment of frequencies for each of the Equalizer Controls of the C50 at the +6dB and -6dB points. Passthru When the C50 is connected together with a McIntosh Multichannel A/V Control Center or Surround Decoder and has the PASSTHRU MODE activated, it will automatically turn-on when the A/V Control Center or Surround Decoder is turned On. [. . . ]