McIntosh PS112 User Manual
PS112 Powered Subwoofer
Owners
Manual
PS112
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549
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.
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.
IMPORTANT SAFETY
INSTRUCTIONS!
PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.
General:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Warning: To reduce risk of fire or electrical shock,
do not expose this equipment to rain or moisture.
This unit is capable of producing high sound pressure levels. Continued exposure to high sound pressure levels can cause permanent hearing impairment or loss. User caution is advised and ear protection is recommended when playing at high volumes.
6. Caution: to prevent electrical shock do not use this
(polarized) plug with an extension cord, receptacle
or other outlet unless the blades can be fully inserted to prevent blade exposure.
Attention: pour pevenir les chocs elecriques pas
utiliser cette fiche polarisee avec un prolongateur,
une prise de courant ou un autre sortie de courant,
sauf si les lames peuvent etre inserees afond ans en
laisser aucune partie a decouvert.
7. Unplug this equipment during lightning storms or
when unused for long periods of time.
8. Only use attachments/accessories specified by the
manufacturer.
NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL.
To prevent the risk of electric shock, do not remove cover or
back. No user serviceable parts inside.
Installation:
9. The equipment shall be installed near the AC Socket
Outlet and the disconnect device shall be easily accessible.
10. Do not block any ventilation openings. Install in accordance with the manufacturers instructions.
11. Do not install near any heat sources such as radiators,
heat registers, stoves, or other equipment (including
amplifiers) that produce heat.
12. Do not use this equipment near water.
13. Do not expose this equipment to dripping or splashing
and ensure that no objects filled with liquids, such as
vases, are placed on the equipment.
14. Use only with the cart, stand, tripod,
bracket, or table specified by the manufacturer, or sold with the equipment.
When a cart is used, use caution when
moving the cart/equipment combination
to avoid injury from tip-over.
Connection:
15. Connect this equipment only to the type of AC power
source as marked on the unit.
16. Protect the power cord from being walked on or
pinched particularly at plugs, convenience receptacles,
and the point where they exit from the equipment.
17. Do not defeat the safety purpose of the polarized or
grounding-type plug.
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. To completely disconnect this equipment from the AC
Mains, disconnect the power supply cord plug from the
AC receptacle.
Care of Equipment:
20. Clean only with a dry cloth.
21. Do not permit objects or liquids of any kind to be
pushed, spilled and/or fall into the equipment through
enclosure openings.
22. Unplug the power cord from the AC power outlet
when left unused for a long period of time.
Thank You
Your decision to own this McIntosh PS112 Powered
Subwoofer ranks you at the very top among discriminating
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 to read the information in this
manual. We want you to be as familiar as possible with all
the features and functions of your new McIntosh.
Please Take A Moment
The serial number, purchase date and McIntosh dealer
name are important to you for possible insurance claim or
future service. The spaces below have been provided for
you to record that information:
Serial Number:
Purchase Date:
Dealer Name:
Technical Assistance
Repair of Equipment:
23. Refer all servicing to qualified service personnel. Servicing is required when the equipment has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen
into the equipment, the equipment has been exposed to
rain or moisture, does not operate normally, or has
been dropped.
24. Do not attempt to service beyond that described in the
operating instructions. All other service should be referred to qualified service personnel.
25. When replacement parts are required, be sure the service technician has used replacement parts specified by
McIntosh or have the same characteristics as the original part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
26. Upon completion of any service or repairs to this product, ask the service technician to perform safety checks
to determine that the product is in proper operating
condition.
If at any time you have questions about your McIntosh
product, contact your McIntosh dealer who is familiar with
your McIntosh equipment and any other brands that may
be part of your system. If you or your dealer wish additional help concerning a suspected problem, you can receive technical assistance for all McIntosh products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-723-3636
Customer Service
If it is determined that your McIntosh product is in need of
repair, you can return it to your dealer. You can also return
it to the McIntosh Laboratory Service Department. For assistance on factory repair return procedure, contact the
McIntosh Service Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-3515
Fax: 607-723-1917
Copyright 2001 ã by McIntosh Laboratory, Inc.
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Introduction and Performance Features
IntroductionTable of Contents
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 ....................................................... 5
Dimensions ....................................................................... 6
Installation ........................................................................ 8
Rear Panel Connections .................................................... 9
How to Connect for Home Theater ................................ 10
How to Connect for Stereo ............................................. 12
Front Panel Displays and Controls ................................. 14
How to Operate ............................................................... 15
Specifications ................................................................. 18
Packing Instruction ......................................................... 19
General Notes
1. The following Connecting Cable is available from the
McIntosh Parts Department:
Power Control Cable Part No. 170-202
Six foot, 2 conductor shielded, with two 1/8 inch stereo
mini phone plugs.
2. For additional connection information, refer to the owner s
manual(s) for any component(s) connected to the PS112.
3. In the event that the PS112 over heats, due to improper
ventilation and/or high ambient temperature, the protection
circuit will activate. The Front Panel Power Guard LED will
continuously indicate ON and the audio will be muted. When
the PS112 has returned to a safe operating temperature,
normal operation will resume.
4. The PS112s Power Control will
function with 5 to 20 volts
applied to the Power Control
Input. Use a 1/8 inch stereo mini
phone plug to connect to the
Power Control Input. Refer to
figure 1.
5. To avoid damage, do not connect
the speaker level output
terminals from any receiver,
amplifier or integrated amplifier to the inputs of the PS112
Powered Subwoofer.
Negative
No Connection
Positive
Figure 1
The McIntosh PS112 Powered Subwoofer is designed for
Home Theater and Music Reproduction. It has a 12 inch
LD/HP1 woofer, a 400 watt amplifier and built-in high and
low pass filters.
The PS112 Powered Subwoofers performance is
equivalent to the quality of McIntoshs legendary line of
Amplifiers, Preamplifiers, Signal Processors, Signal
Sources and Loudspeakers, without imparting distortion or
coloration of its own. It also complements the capabilities
and the remarkably low distortion of McIntosh Power Amplifiers.
Many of todays loudspeakers are designed only for
Home Theater applications. Not so with the PS112. It is
also designed for the accurate reproduction of the low frequencies contained in music. Motion picture sound effects,
explosions, and vehicle crashes require a wide dynamic
range and high sound levels. These sounds are such that a
speaker system having moderate distortion would reproduce them with little audible difference. This is not true
with the reproduction of music. Music is by nature and
definition harmonious. To reproduce it accurately, all forms
of distortion, both harmonic and intermodulation, must be
kept to a minimum. This has been the result of the design
of the new McIntosh PS112 Powered Subwoofer. Each
component in the device has been carefully designed for
durability, efficiency, and above all, low distortion. The
McIntosh PS112 Powered Subwoofer will reproduce music
accurately and function as an excellent Home Theater Powered Subwoofer.
1
LD/HP Pat. No. 5,151,943
4
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.
Flared Acoustic Bass Port
The Acoustic Bass Port in the PS112 has Flared Front and
Rear openings to eliminate air movement noise.
Shielded Magnetic Field
The PS112 may be used in Home Theater Installations near
a television receiver or monitor without causing the
television image to degrade. McIntosh has designed special
shielding around the magnetic structure of the PS112s
Loudspeaker Element to prevent interference.
Phase Switch
The Phase Switch can be set to 0
cancellation.
Sub Frequency Filter
The variable Sub Frequency Filter selects the low frequencies sent to the PS112s Power Amplifier when used with a
full range source signal.
Hi-Pass Filter
The variable Hi-Pass Filter selects the midrange and high
frequencies sent to the Hi-Pass Out Jacks for use with an
external power amplifier and loudspeakers.
0
or 1800 to avoid phase
· Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage protection
circuits ensure the PS112 will have a long and trouble free
operating life. Built-in Thermal Protection Circuits guard
against overheating.
Gold Plated Input Connectors
The PS112 input connectors are gold plated for superior
corrosion resistance and high electrical conductivity.
Remote Power Control
The turn-on method uses a standard McIntosh Power Control jack to receive a turn-on signal from a McIntosh Control Center. The alternate turn-on method for the PS112 utilizes signal-sensing circuitry.
Low Distortion
The PS112s Amplifier has very Low Total Harmonic Distortion. This THD rating combined with the low distortion
of the McIntosh LD/HP Driver provides exceptionally
smooth and clean low frequency response.
Bass Enhance
The Bass Enhance Switch provides a Low Frequency Bass
Boost for use with video sources to enhance the impact of
low frequency sound effects.
5
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.
Front View of PS112 with Grille Removed
Rear View of PS112
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