Congratulations on your purchase of an EMP Tek E10s powered subwoofer! Your
subwoofer is the result of many years of research and development dedicated to
producing powerful, accurate bass in home audio systems. This manual contains
operating procedures and specifications. We recommend you thoroughly read through
the material contained in this manual before connecting your subwoofer. This will
ensure you have an understanding of how to setup and operate your subwoofer for
optimum performance.
Important Safety Instructions
The lightning flash with the arrowhead symbol within an equilateral triangle,
is intended to alert the user to the presence of un-insulated “dangerous voltage”
within the product enclosure that my be of sufficient magnitude to constitute
a risk of 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 product.
When using your subwoofer, basic safety precautions should always be followed to
reduce the risk of fire, electric shock, and injury.
1. Read and understand all instructions in the users manual before operating the
powered subwoofer.
2. Retain this user manual for future reference.
3. Follow all warnings and instructions in this manual and any marked on the back
of the powered subwoofer.
4. Never touch the woofers or push objects of any kind into the woofer.
5. The powered subwoofer should be connected to a power supply compatible with
the power consumption requirements, see Specifications on page 6.
6. If mounting the powered subwoofer on a stand, the wall, or other device only do
so as recommended by an authorized technician.
7. Place the powered subwoofer a safe distance from all heat sources such as
radiators, stoves, or heaters.
8. Do not operate the powered subwoofer near water—for example, near a bathtub,
kitchen sink or in a wet basement; or a swimming pool.
9. Power supply cords should be routed so they are not likely to be walked on or
pinched by items placed upon or against them.
10. Any service or repair required on the powered subwoofer must be performed by
qualified, authorized technician.
Powered Subwoofer
Break In Period
Allow several hours of listening time to adequately break-in the subwoofer. As
the subwoofer breaks-in, the driver suspensions will loosen. The result of break-in
will be an increase in low frequency response, improved definition, and increased
clarity and detail.
Care and Cleaning
To maintain your subwoofer’s appearance, we recommend wiping it down with
a clean damp soft cloth. To clean dust from the grille cloth, use a vacuum with a
brush attachment.
A powered subwoofer is a must-have component for any home theater or audio system.
The performance of your subwoofer can greatly affect the overall performance of
your system. Without a powered subwoofer, the deep bass on your music CDs and
special effects on DVDs may not be heard and/or felt. Think of a subwoofer as a
vital component that adds excitement to your theater or music experience. The
powered subwoofer has its own source of amplification (as opposed to passive,
non-amplified subwoofers which require an additional power amplifier). Subwoofers
can add considerable low-frequency, deep bass performance to any home theater or
audio system.
At the heart of the powered subwoofer is an aluminum cone driver. The driver material
produces enhanced bass definition and accuracy. A powerful magnet, enhanced
suspension and heavy duty voice coil give the driver elevated performance allowing
high output capability and accurate dynamic reproduction.
The powered subwoofer incorporates a class D amplifier with switching power
supply technology, resulting in higher power output, improved bass performance
and maximum energy efficiency.
Features (continued)
Variable crossover, adjustable phase control and auto on/off are also used for convenience
and easy integration with other speakers. Audio can be supplied to the subwoofer by either
interconnect (LFE/line level inputs).
Cabinets are constructed from medium density fiberboard because of its inert
properties. The thickness of the front baffle also prevents excess acoustic radiation.
Sophisticated computer modeling and measurement techniques are used extensively
in the powered subwoofer design process.
Room Setup Suggestions
In order to obtain the best possible sound from your subwoofer and speaker system, it
is important to determine where the subwoofer and speakers will sound best in your
listening room. Room reflections from the floor, ceiling and side walls influence the
balance, imaging and overall sonic quality at the listening position. Experiment with
placement to determine which location offers the best overall sound. As a general
guide, use the room layout diagram and the following descriptions when setting up
a home theater system. The subwoofer and speakers shown in the diagram may not
always be applicable to your system.
Front Main Speakers
As a starting point, place your left and right tower speakers at least 15 inches from
the wall and 7-feet apart from each other. The distance from the listening position
to each speaker should be close to the distance that separates the two main speakers.
Angling the speakers inward towards the listening position may give a more spacious
and realistic sound stage.
Center Channel Speaker
The center channel speaker should be placed in the center between both left and right
main speakers. Often this positioning dictates placing the speaker either directly
above or below a television monitor. The center channel speaker may be placed in a
horizontal (lying down) or vertical (standing) position.
Rear Surround Speakers
The 2-way bookshelf speakers may be placed either above, behind or to the sides
of the listening position. The listening position should be centered between the
surround speakers. For best performance you may want to experiment with angling
the surround speakers either towards or away from the listening position.
In order to obtain the best possible sound from your subwoofer, it is important
to determine where the subwoofer will sound best in your listening room. Sound
reflections from the floor, ceiling and side walls influence the balance, imaging and
overall sonic quality at the listening position. Experiment with subwoofer placement
to determine which location offers the best overall sound.
Room Setup Suggestions (continued)
Placement of the subwoofer will largely determine quality, quantity and extension of
the bass frequencies within your listening room. Bass frequencies are reinforced by
close room boundaries. Placing the subwoofer in a corner will make the subwoofer
sound louder and boost the very lowest frequencies.
Placing the subwoofer away from walls will provide the least reinforcement, making
the bass sound subjectively thinner than if the woofer were closer to a wall. Good
results can usually be obtained by placing a subwoofer along a wall 1-3 feet from a
corner. Experiment with placement of the subwoofer and the sub-amplifier controls
to achieve the proper bass balance.
Subwoofer Amplifier Controls and Setup
sent to the subwoofer be a non-boosted or “flat” signal. To be sure of this, check the settings on
your receiver or processor to make sure any “bass boost”, “super bass” or “loudness” is set to Off.
In most cases a home theater receiver or processor will determine the crossover frequency through
bass management settings. In this configuration, connect the receiver or processor to the Line
Level Input. Your subwoofer will now reproduce the bass frequencies the way they were originally
recorded. Use the subwoofer level control and the individual bass management control within the
receiver or processor to adjust the subwoofers’ volume if necessary. Once set, the volume controls
should not need to be altered as the subwoofers’ volume will track with the master volume control
of your receiver or processor.
This section describes the functions and/or use for each of the amplifier controls
located on the back of the subwoofer. See the diagram of the back of the subwoofer
on the next page.
1. Voltage Selector Switch: Before connecting the amplifier to any power source
make sure the AC Voltage Selector is set to either 110V or 220V to match the
power voltage in your area.
WARNING! If the voltage setting does not match the AC power supplied, damage
to the Subwoofer Amplifier may result.
2. Volume/Gain Control: The volume/level control should be at the minimum
setting (all the way counter-clockwise) before plugging the subwoofer into an
AC wall socket. Once plugged in, turn the level control up one quarter of a turn
(9 o’clock position) for an initial setting. The level control may be adjusted while
playing to match the subwoofer level with the rest of the system.
IMPORTANT! The volume control should be at the minimum setting (all the
way counter-clockwise) before plugging the subwoofer into an AC wall socket.
3. Crossover Frequency Control: The variable crossover frequency control
allows you to set the low-pass crossover point of the subwoofer anywhere from
40-150 Hz. If using this input experiment with setting the crossover frequency
control at highest setting initially. Increasing the crossover frequency will
allow more mid-bass output from the subwoofer. Decreasing the frequency
will allow only deeper bass from the subwoofer.
NOTE: Read the Important Notice regarding bass management above.
4. Auto Signal Tracking: The subwoofer amplifier uses “smart” signal tracking
circuitry. Once the power cord is plugged in and the switch set to auto,
the amplifier automatically turns on when a signal is detected at the preamplifier
or high level inputs and turns off when no signal has been detected for
15 minutes.
5. Phase Control: This control changes the phase of the subwoofer. Changing the phase
will change the way the subwoofer and main speakers interact with each other at
the crossover frequency. Varying the phase position may result in more or less mid
bass depending on the phasing between the main speakers and the subwoofer.
Subwoofer Amplifier Controls and Setup (continued)
6. Line Inputs: Line level input should only be used if no subwoofer crossover is being
utilized through the receivers bass management.
7. LFE In: Line level input is used to connect to most receivers or processors. The “LFE”
output of receiver and may be called “subout”.
8. Fuse Access: This is the power fuse access.
WARNING! In the event the fuse must be replaced, the replacement fuse must
match exactly the original fuse value. If the replacement fuse is not of the same
value, damage to the Subwoofer Amplifier may result.
CAUTION! Before replacing the fuse, disconnect the power cord from the
power receptacle.
9. Power: Power on and off switch.
Subwoofer Amplifier Diagram.
10” (254mm) Aluminum Cone Subwoofer
Amplifier Type:
Class D
Voltage :
110 and 220
Power Handling:
150 Watts
Crossover Frequencies: 40-150Hz (variable)
Frequencies Response: 32Hz-150Hz (variable)
LFE Input:
Line Level Input:
Speaker Level Inputs:
Speaker Level Outputs: No
Phase Control:
Yes (Auto On/Off)
Medium Density Fiberboard (MDF)/Black
Black Cloth
(includes feet and grille)
13” W x 14½” H x 16” D
(330mm W x 368mm H x 406mm D)
27 lbs. (12.2 kg.)
5 Years/1 Year*
* Warranty period: 5 years on the cabinet and woofers, and 1 year on the amplifier
Probable Cause:
No sound from
Amplifier is not connected
to constant power outlet.
Make certain the amplifier is
plugged into an unswitched A.C.
power outlet.
Amplifier is not receiving
an audio signal from
receiver or processor
Make certain there is an audio
signal from receiver or processor
and audio connections resemble
those in the connections section of
this manual.
Amplifier fuse might be
Replace fuse (if fuse is not readily
accessible, consult your authorized
Performance is less The + and - polarity of the
than expected
subwoofer wire might be
reversed on the subwoofer.
Check the entire system for proper
polarity. Experiment with the phase
Crossover frequency not
adjusted correctly.
Adjust crossover frequency by turning the crossover frequency control
clockwise until desired sound is
L/R line level input is connected instead of the LFE
line level input.
If bass management is enabled on
receiver or processor make sure to
use the LFE line level input. (See
amplifier controls and setup on the
previous page.)
Engineered Music Products “EMP Tek” warrants the E10s Powered Subwoofer (the
"Product") to be free from original manufacturing defects in materials and workmanship for five (5) years on the cabinet and woofers, and one (1) year on the amplifier
from the original date of purchase from an authorized EMP Tek dealer. This warranty
extends only to the original consumer purchaser. EMP Tek does not warrant goods
used in industrial applications. This warranty does not cover any expenses incurred
in any removal or re-installation of the product.
If the product should prove defective within the warranty period, contact EMP Tek
for a return authorization number prior to returning the product. Once the return
authorization number has been obtained ship the product back to EMP Tek, along with
the original sales invoice or other proof of purchase, which establishes eligibility for
warranty service and the return authorization number clearly marked of the outside
of the package, see www.emptek.com for detailed information on returns. EMP Tek
will, at its option, replace or repair the product free of charge and return the product
by prepaid delivery. This warranty does not apply to any product which has been
damaged, misused, altered, neglected or repaired by anyone other than an EMP Tek
authorized service facility.
Any implied warranties including fitness for use and merchantability are limited in
duration to the period of the express warranties set forth above, and no person is
authorized to assume for EMP Tek any other liability in connection with the sale of
the product. EMP Tek expressly disclaims liability for any incidental and consequential
damages caused by the product or the result of failure of this product. The remedies
provided under this warranty are exclusive and in lieu of all others.
This warranty gives specific legal rights. In addition, there may be other legal rights
arising from the sale of the product, which vary from state to state. Some states do not
allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply in some areas.
382 Marshall Way, Layton, Utah • USA • 84041
Phone: (801) 991-1308 • Fax: (801) 543-3300
It is EMP Tek policy to continuously incorporate improvements into products; all specifications are subject to change without notice.
Copyright © 2011 EMP Tek, LLC. All Rights Reserved.