McIntosh MA6900 manual

McIntosh Laboratory , Inc. 2 Chambers S treet Binghamton, New Y ork 13903-2699 Phone: 607-723-3512 F A X: 6 07 -7 24- 05 49 Owner  s Manual MA6900 MA6900 Integrated Amplifier[...]

2 IMPOR T ANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERA TING THIS EQUIPMENT . W ARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage withi[...]

3 A polarized plug has two blades with one wider than the other . A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety . If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 18. Do not overload wall outlets, exte[...]

4 Performance Features Introduction and Performance Features Introduction · Power Output The MA6900 consists of two separate power amplifier channels, each capable of 200 watts into 2, 4 or 8 ohm speakers with less than 0.005% distortion. · Electronic Input Switching Digital Logic integrated circuits drive Electromagnetic Switches on all six inpu[...]

5 MA6900 Dimensions The following dimensions can assist in determining the best location for your MA6900. There is additional infor- mation on the next page pertaining to installing the MA6900 into cabinets. MA6900 Dimensions 17- 1/2 " 44.45cm 7 - 5/8 " 19.37cm 3/16 " 0.48cm 16- 1/16 " 40.8cm Front V iew of the MA6900 Rear View [...]

6 Inst allation The MA6900 can be placed upright on a table or shelf, standing on its four feet. It also can be custom installed in a piece of furniture or cabinet of your choice. The four feet may be removed from the bottom of the MA6900 when it is custom installed as outlined below . The four feet to- gether with the mounting screws should be ret[...]

7 MA6900 Rear Panel Connections and Switch Main Fuse holder , refer to information on the back panel of your MA6900 to determine the cor- rect fuse size and rating Right OUTPUT Connections for 2, 4 or 8 ohm loudspeakers Left OUTPUT Connections for 2, 4 or 8 ohm loudspeakers The EXT (external) SENSOR(s) for a Keypad or IR Sensor T APE input accepts [...]

8 How to Connect Loudspeakers Caution: The supplied AC Power Cord should not be connected to the Rear Panel of the MA6900 Amplifier until after the Loudspeaker Connections have been made. Failure to observe this could result in Electric Shock. 1. Prepare the Loudspeaker Hookup Cables that attach to the Amplifier by choosing one of the methods below[...]

9 How to Connect Audio Components 1. Connect an Audio Cable from the McIntosh CD Player Audio Outputs to the MA6900 CD2 INPUTS. 2. Connect an Audio Cable from a McIntosh T uner 1 Out- puts to the MA6900 TUNER INPUTS. 3. Connect an Audio Cable from a Turntable to the PH / AUX INPUTS and the T urntable Ground Connec- tion to the GND grounding post. 4[...]

10 How to Connect for Video Switching How to Connect for V ideo Switching 1. Connect a Data cable from the MA6900 VIDEO DA T A POR T to the Audio/V ideo Selector Data In jack. 2. Connect the Audio/V ideo Selector Control Center Au- dio Outputs to the MA6900 VIDEO INPUTS. 3. Connect the Audio/V ideo Selector V ideo Monitor Out- put to a Monitor/TV .[...]

11 How to Connect for a Second Room How to Connect for a Second Room 1. Connect Audio Cables from the MA6900 OUTPUTS 2 to the Second Power Amplifier Inputs. 2. Connect Hookup Cables from the Second Power Am- plifier to the loudspeakers. Refer to page 8 in this Owner  s Manual for connection details. 3. Connect a Control Cable from the MA6900 POW[...]

12 Front Panel Controls, Push-Buttons and Switch POWER switch turns all AC power completely ON or OFF MONO push-button combines the left and right channel signals for Mono operation VOLUME control allows adjustment of the listening level for both channels The BALANCE control allows adjustment of the relative volume bal- ance between channels MUTE p[...]

13 How to Operate How to Operate Power On Press the POWER switch to ON. The Red LED above the ST ANDBY/ON push-button, lights to indicate the MA6900 is in S tandby mode. T o turn On the MA6900, press the ST ANDBY/ON push-button. The MUTE LED will light for approxi- mately two seconds after turn on. Re- fer to figures 1 and 2. Note: For normal opera[...]

14 How to Operate, cont Outputs 1 and 2 Press OUTPUTS Push-button 1 to switch the Speakers On or Off. The push-buttons also switch the Preamplifier OUTPUTS 1 and 2 On or Off for connection to external Power Amplifier(s). Press either push-button individually , or both together . Refer to figure 6. Headphones Jack Connect a pair of dynamic headph[...]

15 Notes[...]

16 Remote Control Push-Buttons Selects one of the twelve High Level Audio/V ideo Sources or Phono Input T urns AC Power ON or OFF to certain McIntosh Components when connected via the Data Port Adjusts the volume level up or down Selects CD Player or T ape Recorder Functions and also performs various functions on a variety of McIntosh Components Pr[...]

17 How to Operate by Remote Control The supplied remote control is capable of directly control- ling the functions of contemporary McIntosh Source Com- ponents connected to the MA6900. Earlier McIntosh source components and other brand source components can be controlled by the MA6900 with the addition of a McIn- tosh Remote Control T ranslator (RC[...]

18 T echnical Description McIntosh Laboratory , the company who introduced the world s first amplifier that could be called High Fidelity, has done it again. The McIntosh engineering staff has cre- ated a power amplifier without compromise, using the most advanced McIntosh circuit design concepts. A continuous average power output rating o[...]

19 T echnical Description magnetic field. The force of the field causes the leads to bend and contact one another inside the sealed glass tube. The inert gas eliminates corrosion of the contacts and in- sures a low resistance, distortion free switch. All inputs, outputs, and data ports are controlled by logic circuits in the MA6900. The logic is ch[...]

20 Input T est Signal Figure 14 W ithout Power Guard Figure 15 T op Inside V iew of the MA6900 Figure 12 Figure 13 ance points of two ohms, four ohms and eight ohms. The unequaled expertise of McIntosh in the design and manu- facturing of autoformers is legendary in the high fidelity industry . The high efficiency circuit design of the MA6900 con- [...]

21 Figure 16 W ith Power Guard PG light and a dynamic elec- tronic attenuator at the amplifier input reduces the input volume just enough to prevent any fur- ther increase in distortion. The Power Guard circuit acts so fast that there are absolutely no au- dible side effects and the sonic purity of the music reproduction is perfectly preserved. The[...]

22 Specifications Specifications Power Output Minimum sine wave continuous average power output per channel, all channels operating is: 200 watts into 2 ohm load 200 watts into 4 ohm load 200 watts into 8 ohm load Rated Power Band 20Hz to 20,000Hz T otal Harmonic Distortion Maximum T otal Harmonic Distortion at any power level from 250 milliwatts t[...]

23 Packing Instructions Packing Instructions In the event it is necessary to repack the equipment for shipment, the equipment must be packed exactly as shown below . It is very important that the four plastic feet are at- tached to the bottom of the equipment. Three #10 x 2-1/4 inch screws and washers must be used to fasten the unit securely to the[...]

McIntosh Part No. 040772 McIntosh Laboratory , Inc. 2 Chambers Street Binghamton, NY 13903[...]