Page 2 - Important Additional; Remote Control and Front Panel:
2 Your decision to own this McIntosh MA352 Integrated Amplifier ranks you at the very top among discrimi- nating music listeners. You now have “The Best.” The McIntosh dedication to “Quality,” is assurance that you will receive many years of musical enjoyment from this unit. Please take a short time...
Page 4 - WARNING; Caution; Figure A; Remove the Warning Sheet; Remove the Foam; Figure B; Vacuum Tube Shield Covers; Figure D; Remove the four Vacuum Tube Shield Covers; Figure C
4 VOLUME INPUT HEADPHONES PUSH - TRIM PUSH - POWER STANDBY 30 125 500 2k 10k V3 - 12AT7 V1 - 12AX7A V4 - 12AT7 V2 - 12AX7A TO AVOID A FIRE HAZARD, THE FOAM INSERT OVER THE VACUUM TUBES MUST BE REMOVED PRIOR TO CONNECTING THE A.C. MAINS POWER SUPPLY CORD AND OPERATING THIS PRODUCT. WARNING REFER TO P...
Page 5 - Figure E; Special Vacuum Tube Sockets; Figure F; Vacuum Tube; Figure G
5 5. The MA352 Integrated Amplifier has four Small Vacuum Tubes that are inserted into special Vacuum Tube Sockets on the Stainless Steel Chas- sis. Refer to figure E. Each of the Tube Sockets have four pin openings to accept the Vacuum Tube Shield Covers. Refer to figure F. Carefully install the Va...
Page 7 - ThermalTrakTM and ON Semiconductor are trademarks of Semi-; Introduction and Performance Features
7 Now you can take advantage of traditional McIntosh standards of excellence in the MA352 Integrated Am- plifier. The Power Amplifier Solid State section of the MA352, with a power output of 200 watts per channel at 8 ohms, will drive a pair of quality Loudspeakers to a high level of performance. Th...
Page 8 - The following dimensions can assist in determining; Front View of the MA352
Dimensions Dimensions The following dimensions can assist in determining the best location for your MA352. There is additional information on the next page pertaining to installing the MA352 into cabinets. 30 125 500 2K 10K BAL 1 15% 9 -7/8 " 25.1m Front View of the MA352 Top View of the MA352 R...
Page 10 - MA352 Rear Panel Connections
10 MA352 Rear Panel Connections Right OUTPUT connections for a 4 or 8 ohm Loudspeaker POWER CONTROL TRIG OUTPUT sends turn On/Off signals to a McIntosh Component when the MA352 is switched On/Off Connect the MA352 power cord to a live AC outlet. Refer to informa- tion on the back panel of your MA352...
Page 11 - Power Control Connections:; Output Terminals; appears. Refer to figures A and; Connecting Components; Caution: Do not connect the AC Power Cord to the
11 Connecting Components The MA352 has the ability to automatically switch power On/Off to McIntosh Source Components via the Power Control connections. The Data Port Con- nections allow for the remote operation of basic func- tions using the MA352 Remote Control. The connection instructions below, ...
Page 12 - Spade Lug or Wire Connections:; Loudspeaker Cable Distance vs Wire Gauge Guide; Banana Plugs are for use in the United States and; clockwise until it is finger tight.; Do not over; Figure J; Figure L; Connecting Loudspeakers
12 Spade Lug or Wire Connections: 6. Connect the Loudspeaker hookup cables to the MA352 Negative Output Terminal and Positive Output Terminal to the Loudspeaker Terminal Connections being careful to observe the cor- rect polarities. Insert the spade lug connector or prepared section of the cable end...
Page 13 - LED Illumination Color:; Tube Warmup
13 30 125 500 2K 10K BAL 1 15% Press the Volume Control on the MA352 or press the (Power ON) Push-button on the Remote Con- trol to switch On the MA352. The MA352 will go through a TUBE WARMUP cycle (15 seconds), with the Audio Muted. The Tubes in the MA352 glow an orange color and a brief startup i...
Page 14 - HR085 Remote Control Push-Buttons
14 Note: Push-buttons whose function is not identified above are for use with other McIntosh Products. Press to Power the Preamplifier ONUse to select tuner presets, direct ac- cess an AM/FM Station Frequency, disc tracks or any numbered operation Mutes the audio Adjusts the VOLume level up or down ...
Page 15 - Trim
15 How to use the Remote Control How to use the Remote Control The supplied MA352 Remote Control (HR085) is capable of directly controlling the functions of con- temporary McIntosh Source Components connected to the MA352 via the Data Ports. Notes: 1. If at any time the MA352 seems unresponsive to t...
Page 16 - Front Panel Displays, Controls and Jack
16 30 125 500 2K 10K BAL 1 15% IR Sensor receives commands from a Remote Control STANDBY LED Indicator INFORMATION DISPLAY indicates the Sources, Volume, Trim Operational Functions and Setup Mode Settings VOLUME Control allows adjustment of the listening level for both chan- nels. Switches the MA352...
Page 17 - Figure 2; Note: When an INPUT is swiched Off, its name will; Input Settings; Figure 3; Firmware Version; Figure 4; Off
17 Your McIntosh MA352 has been factory configured to allow immediate enjoyment of superb audio without the need for further adjustments. If you wish to make changes to the factory default settings, a Setup Fea- ture is provided to customize the operating settings using the Front Panel Information D...
Page 18 - Input Settings, con’t; Figure 7
18 14. Repeat steps 8 thru 13 until the new name of “RENAME: BAL 1, MEDIA BRDG” is indicated on the Front Panel Display. Refer to figures 14 thru 17. 15. To save the new name, press and hold in the IN- PUT Control until “SETUP: MEDIA BRDG , ON / Rename” appears on the Front Panel Information Display...
Page 19 - Note: The Phono Input is not assignable as a Passth-; Passthru; OFF; BAL 1; All Data
19 4. Rotate the VOLUME (ADJUST) Control to select the BAL 1 Input for Data Port 1. Refer Figure 25 “SETUP: Data Port 1, BAL 1”. 5. The MA352 has a second Data Port that another Source Input can be connected for remote control. 6. Press and hold in the INPUT Control to enter the SETUP MODE. Refer to...
Page 20 - IR Sensor; Enabled; Remote Control Codes; Normal; Comm Port Baud Rate
20 The MA352 may be remotely controlled from a com- patible control system connected to the Rear Panel RS232 Jack. The speed at which the MA352 com- municates (8 bit, no parity and 1 stop bit) with other equipment is adjustable from 9,600 bits per second to 115,200 bits per second. To change from th...
Page 21 - Power Mode; Factory Reset; FACTORY RESET
21 Setup, con’t Power Mode The MA352 incorporates an Auto Off Feature, which automatically places the preamplifier into the Power Saving Standby/Off Mode. This occurs approximately 30 minutes after there has been an absence of user ac- tivity (includes changes to any of the Operation Func- tions suc...
Page 22 - How to Operate the MA352; 0pF
22 with Adjustments. The Trim Selec- tions include Balance, Input Trim Level, Equalizer Mode, Mono/ Stereo Mode, Amplifier Meter Lights, Display Brightness, and when Headphones are connected, HXD Mode. The Trim Settings are stored in memory independently for each Input Source Selected, except the Me...
Page 23 - L BALANCE R; EQUALIZER; Output 1
23 Note: The audio signal present at the FIXED OUT Jacks is unaffected by the Equalizer settings. 1. Select the desired Input Source. 2. Select “EQUALIZER, Off ” as indicated on the Front Panel Information Display. Refer to figure 57. 3. Set the EQUALIZER On for the desired Input by using the Front ...
Page 24 - How to Operate the MA352, con’t; Output 2; INPUT TRIM; METER LIGHTS
24 TRIM LEVEL Source Components can have slightly different volume levels resulting in the need to readjust the MA352 Volume Control when switching between different sources. The MA352 allows the adjustment of levels for each of the Source Inputs for the same relative volume. To adjust the Trim Leve...
Page 25 - TUBE LIGHTS; DISPLAY
25 Figure 75 DISPLAY Auto Off How to Operate the MA352, con’t In the unlikely event the controls of the MA352 stop functioning, the microprocessors can be reset by per- forming the following: 1. Press and hold in the Front Panel VOLUME CON- TROL until the STANDBY/ON LED Indicator switches Off. 2. Th...
Page 26 - Amplifier Specifications; Power Output Stereo; Specifications; Field AC Voltage conversion of the MA352 is not pos-
26 Input Impedance High Level - 20K ohms Phono - 47K ohms; 50pF-800pF Preamplifier Output 2 (for rated input) 1.4V unbalanced (8V Maximun) Maximum Input Signal High Level - 8V unbalanced, 16V balanced Phono - 80mV Voltage Gain High Level to Output 1: 44dB High Level to Output 2: 15dB Phono to Output...
