Powered Subwoofer
XLS112
Owner’s Manual
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549
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Thank You
Table of Contents
Safety Instructions ............................................................ 2
Thank You and Please Take a Moment............................. 3
Technical Assistance and Customer Service .................... 3
Table of Contents .............................................................. 3
Important Information ...................................................... 4
Connector Information ..................................................... 4
Introduction ...................................................................... 4
Performance Features ....................................................... 5
Dimensions ....................................................................... 6
Installation ........................................................................ 8
Rear Panel Connections.................................................... 9
How to Connect .............................................................. 10
How to Operate............................................................... 12
Specifications ................................................................. 14
Packing Instruction ......................................................... 15
Your decision to own this McIntosh XLS112 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
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 addi-
tional help concerning a suspected problem, you can re-
ceive technical assistance for all McIntosh products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-772-3308
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 as-
sistance 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 2004 © by McIntosh Laboratory, Inc.
3
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Important Information
Introduction
1. The following Connecting Cable is available from the
McIntosh Parts Department:
The McIntosh XLS112 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 XLS112 Powered Subwoofer’s performance is
equivalent to the quality of McIntosh’s 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 Am-
plifiers.
Many of today’s Loudspeakers are designed only for
Home Theater applications. Not so with the XLS112. It is
also designed for the accurate reproduction of the low fre-
quencies 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 repro-
duce 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 XLS112 Powered Subwoofer. Each
component in the device has been carefully designed for
durability, efficiency, and above all, low distortion. The
McIntosh XLS112 Powered Subwoofer will reproduce mu-
sic accurately and function as an excellent Home Theater
Powered Subwoofer.
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 XLS112.
3. In the event that the XLS112 over heats, due to improper
ventilation and/or high ambient temperature, the protection
circuit will activate placing it in the Standby Mode. The Rear
Panel Status LED Indicator will illuminate Red and the audio
will be muted. When the XLS112 has returned to a safe
operating temperature, normal operation will resume.
4. The XLS112’s Power Control Input will function within a 5 to
20 DC Voltage range.
5. To avoid damage, do not connect the speaker level output
terminals from any receiver, amplifier or integrated amplifier
to the inputs of the XLS112 Powered Subwoofer.
Connector Information
XLR Connectors
Below is the Pin configuration for the XLR Balanced Input
and Output Connectors on the XLS112. Refer to the dia-
gram for connection:
Pin 2
PIN 1: Shield/Ground
PIN 2: + Signal
PIN 3: - Signal
Pin 1
Pin 3
Power Control Connector
The XLS112 Power Control Input/Output Jacks provide
Power On/Off Signals when connected to
Positive
other McIntosh Components. A 1/8 inch
stereo mini phone plug is used for connec-
tion to the Power Control Input/Output on
the XLS112.
N/C
Ground
1LD/HP Pat. No. 5,151,943
4
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Important Information, Connector Information, Introduction and Performance Features
Performance Features
Patented LD/HP Technology
Signal Sensing Circuitry
•
•
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.
In addition to the McIntosh Remote Power Control feature,
the XLS112 utilizes signal-sensing circuitry. This signal-
sensing circuitry is beneficial when the XLS112 is to be
located at a great distance from the pre-amp and running an
additional Power Control Cable for remote turn-on is not
feasible.
Large Woofer with Integral Heat Sink
•
Phase Switch
•
Massive dual magnets with thick front and back plates pro-
vide an incredible heat sink for the voice coil. The voice
coil itself is wound on a 3" diameter aluminum bobbin to
further aid in the dissipation of heat. The ability to dissi-
pate heat greatly improves the driver’s capacity to perform
at high power levels and not suffer from power compres-
sion.
The Phase Switch can be set to 00 or 1800 to avoid phase
cancellation.
Balanced and Unbalanced Inputs/Outputs
•
Balanced connections guard against induced noise and al-
low long cable runs without compromising sound quality.
Rigid Woofer Framework
•
Variable Low Pass Filter
•
A black powder coated, die cast aluminum basket is used
as the framework for the driver. Such framework is neces-
sary to keep the driver’s moving components aligned dur-
ing the long excursions a subwoofer can produce.
The variable Low Pass Filter selects the low frequencies
sent to the XLS112’s Power Amplifier when used with a
full range source signal. This filter can be switch out of the
signal path in Home Theater Systems.
Shielded Magnetic Field
• Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage protection
circuits ensure the XLS112 will have a long and trouble
free operating life. Built-in Thermal Protection Circuits
guard against overheating.
•
The XLS112 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 XLS112’s
Loudspeaker Element to prevent interference.
• Heavy Duty Power Supply
The XLS112 incorporates a regulated Power Supply, spe-
cial R-Core Power Transformer and extra large filter ca-
pacitors. All together these design features ensure stable
noise free operation even though the power line varies.
High Power and Low Distortion
•
The XLS112’s 400 Watt Amplifier has very Low Total Har-
monic Distortion (THD). This 0.07% THD rating com-
bined with the low distortion of the McIntosh LD/HP
Driver provides exceptionally smooth and clean low fre-
quency response.
Gold Plated Input Connectors
•
The XLS112 Input Connectors are gold plated for superior
corrosion resistance and high electrical conductivity.
Power Guard
•
The patented McIntosh Power Guard circuit prevents the
XLS112’s Amplifier from being over driven into clipping,
with its harsh distorted sound that can also damage your
valuable Loudspeaker.
Special Enclosure
•
The XLS112 Enclosure is a combination of thick extruded
aluminum metal sides and rear panel with a textured black
powder coated finish. The front, top and bottom of the en-
closure is made from thick MDF covered with a thermal
vacuum formed durable surface also in a textured black
finish.
Remote Power Control
•
The turn-on method uses a standard McIntosh Power Con-
trol jack to receive a turn-on signal from a McIntosh Con-
trol Center. The alternate turn-on method for the XLS112
utilizes signal-sensing circuitry.
5
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Dimensions
Note: The XLS112 is supplied with optional adjustable feet,
four Tiptoes and four Glides. If they are used with the
XLS112 please allow for the added height.
The following dimensions can assist in determining the
best location for your XLS112 Powered Subwoofer. There
is additional information on page 8 pertaining to installing
the XLS112.
15-1/8"
38.42cm
Front View of
XLS112 with
Grille Removed
15-1/2"
39.37cm
7-3/4"
19.69cm
7-9/16"
19.21cm
13-1/10"
33.27cm
10-1/4"
26.04cm
14"
35.56cm
Rear View of
XLS112
2-7/16"
6.19cm
5-1/16"
12.86cm
6
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Dimensions
Top View of XLS112
13-1/10"
33.27cm
Side View of XLS112
15"
38.10cm
2-1/4"
5.72cm
2"
5.08cm
10-5/8"
26.99cm
9-1/10"
23.11cm
Bottom View of XLS112
2-7/8"
7.30cm
10-1/8"
25.72cm
7
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Installation
Installation
Optional Feet
Locating the XLS112
Two sets of optional feet (four Tiptoes and four Glides) are
supplied with the XLS112 Powered
Always provide adequate ventilation for the XLS112 Pow-
ered Subwoofer. Cool operation ensures the longest pos-
sible life for any electronic instrument. An installation
should provide at least 2 inches spacing on all sides of the
XLS112, so airflow is not obstructed.
The optimal method for selecting speaker locations in-
cludes the use of a real time spectrum analyzer (RTA) oper-
ated by an experienced system installer. An uncompromis-
ing installation would take into consideration the floor,
wall and ceiling coverings, the type and placement of furni-
ture and can even include the architectural design of the
room and its construction materials. Frequencies 80Hz and
below reproduced by the XLS112 Powered Subwoofer are
non-directional and will sound best located toward the
front of the room and away from corners. It is not neces-
sary to aim the front of the XLS112 directly at the listener.
Refer to figure 2.
Subwoofer. To prevent crushing carpet
use the Tiptoe spikes; to protect non-
carpeted flooring use the chrome
Tiptoes
Glides. Both the Glides and Tiptoes
have a threaded shaft and locking nut
that screw into the tapped holes in the
bottom of the XLS112. The feet can be
independently adjusted to compensate
Glides
for uneven flooring.
Figure 2
8
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Rear Panel Connections
STATUS LED Indicator illuminates RED when the
XLS112 is in the Standby Mode, GRN (Green)
when Power is ON and ORN (Orange) during the
time the Power Guard Circuit has activated
LOW PASS Filter selects
the low frequencies sent
to the XLS112’s Power
Amplifier
PHASE reversing
switch to help avoid
phase cancellation
LEVEL Control
allows adjustment of
acoustic output to
balance with the
other Loudspeakers
INPUTS L (Left) and R
(Right) Unbalanced Jacks or
MONO (Monaural) Balanced
Connector accepts signal
from the output of a A/V
Control Center or Audio Con-
trol Center
OUTPUTS L (Left) and R
(Right) Unbalanced Jacks or
MONO (Monaural) Balanced
Connector provides signal to
the next Powered Subwoofer
or Power Amplifier
POWER CONTROL IN
receives turn on/off sig-
nals from a McIntosh
component and the
POWER CONTROL OUT
sends the turn on/off sig-
nal to the next McIntosh
component
POWER Switch Turns
AC power Standby/On
and Off
Main Fuse holder, refer
to information on the
back panel of your
XLS112 to determine
the correct fuse size
and rating
Connect the XLS112 power
cord to a live AC outlet. Refer
to information on the back
panel to determine the correct
voltage
9
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How to Connect
The McIntosh XLS112 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 Audio Control Center. If the Power Con-
trol Signal is not available, the XLS112 has built-in signal-
sensing circuitry which will automatically turn-on the Pow-
ered Subwoofer.
McIntosh A/V Control Center
1. Connect a power control cable from the McIntosh A/V
Control Center or Audio Control Center Power Control
Out Jack to the McIntosh XLS112 POWER CONTROL
IN Jack.
2. Connect a power control cable from the McIntosh
XLS112 POWER CONTROL OUT Jack to the McIn-
tosh Power Amplifier Control In Jack.
Notes: 1. If two or more McIntosh XLS112 Powered
Subwoofers are being used in the same system,
connect the POWER CONTROL OUT from the
first XLS112 to the next XLS112 POWER
CONTROL IN Jack and then onto the McIntosh
Power Amplifier.
2. The XLS112’s Power Control Input will
function with 5 to 20 Volts DC applied.
3. Connect a Balanced Audio Cable from the McIntosh
A/V Control Center or Audio Control Center
Subwoofer Out to the McIntosh XLS112 MONO
INPUT(S).
Notes: 1. If two or more McIntosh XLS112 Powered
Subwoofers are being used in the same system,
connect a second Audio Cable from the first
XLS112 MONO OUTPUT(S) to the next
McIntosh Seven Channel Power Amplifier
XLS112 MONO INPUT(S).
2. The unbalanced L (Left) or R (Right)
INPUT(S) jack may be connected instead of the
Balanced Input jack.
3. If the input signal is insufficient for proper
system balance, connect an unbalanced cable
from the McIntosh A/V Control Center or
Surround Decoder Subwoofer Out to a “Y”
adapter and connect the “Y” adapter outputs
to both the L (Left) and R (Right) INPUT
Jacks. This will increase the input gain of the
XLS112 by 6dB.
4. Attach to the Front Panel the supplied Loudspeaker
Grille.
5. Connect the XLS112 power cord to an active AC out-
let.
10
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How to Connect
To AC
Outlet
11
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How to Operate
How to Operate
Remote Power Control
Level Control
The XLS112’s Power Control Circuitry uses the turn-on
signal from a McIntosh Control Center or Preamplifier to
switch On and Off. When a Power Control Cable is con-
nected between the Control Center or Preamplifier and the
XLS112, the audio signal-sensing circuit is disabled and
the XLS112 will automatically turn-on when the Control
Center or Preamplifier is on. The XLS112 also has a Power
Control OUTput jack for triggering additional subwoofers
or other McIntosh component(s).
Start with the LEVEL CONTROL in the center position
and perform the system level calibration on the A/V Con-
trol Center or Surround Decoder for
the subwoofer level. If the subwoofer
level can not be set, adjust the
XLS112’s LEVEL CONTROL to
provide adequate range during cali-
bration. Refer to figure 3.
Figure 3
Note: If the Control is set to maximun and additonal output is
When there is no Power Control Cable connected to the
XLS112, the audio signal-sensing circuitry is active and
automatically switches power On and Off. This occurs
when a music signal is detected at the Line INput(s). A
time delay of thirty minutes is incorporated in the circuit to
prevent the XLS112 from turning off during a music or
movie passage where there is little low frequency activity.
needed refer to note 3.2 on page 10.
Low Pass
This control determines from what frequency and below
the XLS112 will reproduce sound when the imformation is
present in the audio signal.
When the XLS112 is used with
a discrete Sub Out from a Home
Theater Control Center, the
Status Indicator
The STATUS Indicator is a tri-color LED and illuminates a dif-
ferent color depending upon the current operating condition of
the XLS112. When the LED is illuminated Red the XLS112 is in
the Standby Mode. The LED will change to Green in color when
the XLS112 is switched on ei-
LOW PASS Control should be
set to OUT, as the signal should
contain only low frequency in-
formation. Refer to figure 4.
Figure 4
ther by a Power Control Signal
or the Audio Signal Sensing Cir-
Phase
The PHASE Switch sets the acoustic output phase of the
XLS112 to either 0 or 180 degrees relative to its input. This
switch is to help avoid phase cancellation (characterized by
a loss of bass information) between the
XLS112 and any other low frequency
cuit has detected a low fre-
quency audio signal present at
the Input jack(s). During peaks in the audio signal the LED may
change from Green to Orange in color to indicate the built-in
Power Guard Circuit has momentarily activated. Refer to figure
7.
Figure 7
producing speaker in the system. Care-
Figure 5
ful listening with this circuit switched
to 0 and then listening with it switched
to 180 will help you determine if this effect will be benefi-
cial to the system. Set the switch for the desired bass out-
put. Refer to figure 5.
Power
When the POWER SWITCH is set to the OFF position, the
XLS112 can not be turned on by a
Remote Power Conrol input or au-
dio input signal sensing. Refer to
figure 6.
Figure 6
12
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Notes
13
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Specifications
Specifications
Driver Complement
Overall Dimensions
12 inch LD/HP Woofer
Width is 15-1/8 inches (38.42cm)
Height is 15-1/2 inches (39.37cm)
Depth is 15 inches (38.10cm)
Frequency Response
35Hz to 200Hz (±3dB)
Weight
Maximum Sound Pressure Level
87 lb. (39.50kg) net, 98 lb (44.5kg) in shipping carton
115dB
Power Output
400 Watts Sine Wave Continuous Power
Total Harmonic Distortion (Power Ampfier)
Maximum Total Harmonic Distortion at any power level
from 250 milliwatts to rated power output is 0.07%
Input Sensitivity
0.4V for Rated Output
A-Weighted Signal To Noise Ratio
115dB Below Rated Output
Input Impedance
20,000 ohms
Maximum Input Signal
9V
Low Pass Filter
40 - 120Hz (Variable Control on the Rear Panel)
Level Control
Variable Level Control on the Rear Panel
Power Control In
5 - 20 VDC Trigger
Power Requirements
100 Volts, 50/60Hz at 4.8 amps
110 Volts, 50/60Hz at 4.0 amps
120 Volts, 50/60Hz at 4.0 amps
220 Volts, 50/60Hz at 2.2 amps
230 Volts, 50/60Hz at 2.0 amps
240 Volts, 50/60Hz at 2.0 amps
14
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Packing Instructions
Packing Instructions
Quantity Part Number
Description
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 to-
gether securely.
1
1
2
034287
034286
034288
Shipping carton Top
Shipping carton Bottom
Foam cap
Use the original shipping carton and parts only if they
are in good serviceable 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.
15
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McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, NY 13903
The continuous improvement of its products is
the policy of McIntosh Laboratory Incorporated
who reserve the right to improve design without
notice.
Printed in the U.S.A.
McIntosh Part No. 04092800
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