Owners Manual PS112 Powered Subwoofer PS112 McIntosh Laboratory, Inc.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. WARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. IMPORTANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT. General: 1. Read these instructions. 2.
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, extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock. 19.
Introduction and Performance Features Table of Contents Introduction Safety Instructions ............................................................ 2 Thank You and Please Take a Moment............................. 3 Technical Assistance and Customer Service .................... 3 Table of Contents and General Notes ............................... 4 Introduction ...................................................................... 4 Performance Features ..................................................
Performance Features Patented LD/HP Technology The McIntosh Loudspeaker Element features the patented LD/HP motor structure. This design, when compared to conventional Loudspeaker Elements, reduces distortion significantly. It also increases power handling and efficiency. · Power Guard The patented McIntosh Power Guard circuit prevents the PS112s Amplifier from being overdriven into clipping, with its harsh distorted sound that can also damage your valuable loudspeaker.
PS112 Dimensions The following dimensions can assist in determining the best location for your PS112 Powered Subwoofer. There is additional information on page 8 pertaining to installing the PS112.
PS112 Dimensions Side View of PS112 with Grille Side View of PS112 with Grille Removed 7
Installation Installation Locating the PS112 Always provide adequate ventilation for the PS112 Powered Subwoofer. Cool operation ensures the longest possible life for any electronic instrument. An installation should provide at least 2 inches spacing on all sides of the PS112, so that airflow is not obstructed. The optimal method for selecting speaker locations includes the use of a real time spectrum analyzer (RTA) operated by an experienced system installer.
PS112 Rear Panel Connections LINE IN Jacks accept signal from output of a control center and the HI-PASS OUT Jacks send hi-pass filtered signals to an additional amplifier and speakers POWER CONTROL IN receives turn on/off signals from a McIntosh component and the POWER CONTROL OUT sends the turn on/off signal to the next McIntosh component Main Fuse holder, refer to information on the back panel of your PS112 to determine the correct fuse size and rating Connect the PS112 power cord to a live AC outlet.
How to Connect for Home Theater The McIntosh PS112 Powered Subwoofer may be turned On or Off by two different methods. The preferred method is to utilize the Power Control Signal from a McIntosh A/V Control Center or Surround Decoder. If the Power Control Signal is not available, the PS112 has built-in signal-sensing circuitry which will automatically turn-on the subwoofer. 1.
How to Connect for Home Theater To AC Outlet 11
How to Connect for Stereo The McIntosh PS112 Powered Subwoofer may be turned On or Off by two different methods. The preferred method is to utilize the Power Control Signal from a McIntosh Audio Control Center or Preamplifier. If the Power Control Signal is not available, the PS112 has built-in signal-sensing circuitry which will automatically turn-on the subwoofer. 1.
How to Connect for Stereo To AC Outlet 13
PS112 Front Panel Displays and Controls BASS ENHANCE boosts low frequency bass when set to STANDBY LED VIDEO indicates the unit is not active and is ready to accept a power control command LEVEL Control allows adjustment of acoustic output to balance with the other loudspeakers 14 SUB FREQUENCY Filter selects the low frequencies sent to the PS112s Power Amplifier POWER GUARD LED lights when the amplifier POWER GUARD circuit activates The ON LED indicates when the amplifier is on PHASE reversing switc
How to Operate the PS112 in Home Theater How to Operate the PS112 in Home Theater Level Control Start with the LEVEL CONTROL in the center position and perform the system level calibration on the A/V Control Center or Surround Decoder for the subwoofer level. If the subwoofer level can not be set, adjust the PS112s LEVEL CONTROL to provide adequate range during calibration.
How to Operate the PS112 in Stereo How to Operate the PS112 in Stereo Level Control Start with the LEVEL CONTROL in the center position and adjust until the subwoofer volume is matched to the rest of the system when listening to a full-range source. Bass Enhance Set the BASS ENHANCE Switch to MUSIC, turning the BASS ENHANCE effect off. Careful listening with this circuit switched to MUSIC and then listening with it switched to VIDEO will help determine if this effect will be beneficial to the system.
Notes 17
Specifications Specifications Power Output 400 Watts Sine Wave Continuous Power Enclosure Configuration Front Firing Flared Port Design Dynamic Headroom 1.8dB Maximum Sound Pressure Level 115dB Input Sensitivity 0.4V for Rated Output Driver Complement 12 inch LD/HP Woofer Total Harmonic Distortion Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is 0.
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. Use banding straps to make sure box is held together securely. Use the original shipping carton and parts only if they are in good servicable condition. If a shipping carton or any of the interior part(s) are needed, please call or write Customer Service Department of McIntosh Laboratory. Please see the Part List for the correct part numbers.
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, NY 13903 McIntosh Part No.
