EMP Tek EF50 SERIES User manual

COMPACT THEATER SPEAK ERS
Model EF50
SE R IE S
OW N ER’ S M A N UA L

Introduction
EF50 Series Speakers
Congratulations on your purchase of EMP Tek compact theater speakers! Your speakers
are the result of many years of research and development.
is manual contains setup recommendations and specications for the EF50, EF50C
and EF50T compact theater speakers. It is highly recommended you thoroughly read
through the material contained in this manual before connecting your speakers. is
will ensure you have an understanding of how to properly setup, operate and maintain
your speakers for optimum performance and maximum enjoyment.
EF50C
Center Channel Speaker
EF50
Bookshelf
Speaker
1
EF50T
Tower Speaker

Features
Proprietary Aluminized Fiberglass Matrix cone woofers are the heart of the EMP
Tek EF50, EF50C and EF50T compact theater speakers. is special material is
sti, lightweight, and has self-damping properties which helps provide a virtually
uncolored audio reproduction. ese woofers have a powerful magnet that gives
them high excursion capabilities; this helps the EF50 Series speakers provide
extended dynamics and frequency response not typically found in speakers of their
size. To avoid any interference with tube-type televisions and monitors, the EF50C
is video shielded using additional opposing magnets and steel cups to cancel any
stray magnetic elds.
High frequencies are handled by a high-quality poly silk tweeter. is tweeter uses
liquid cooling for greater power handling. is allows the tweeter to last longer and
provide accurate reproduction at the higher power output levels today’s amplier
systems are capable of producing.
Crossover networks are used to integrate the EF50 Series woofers and tweeters.
e use of steep crossover slopes allows higher than average power handling,
minimizes the audio interaction between the drivers, and maximizes the speaker’s
overall clarity by allowing each driver to specialize in its own respective frequency
band. One component featured within the EF50 Series crossover networks is a
polyswitch. A polyswitch, or current-limiting device, is used to prevent damage to
the tweeter if the speaker is over-driven or fed a distorted audio signal. is device
operates 900% faster than a fuse and self-resets when the volume level or amount
of distortion is reduced.
2
Break In Period
Allow several hours of listening time for your speakers to adequately break-in. During
this period, the driver suspensions will loosen, the result will be an increase in bass,
improved denition, and increased clarity and detail.
Care and Cleaning
To maintain the speaker’s high quality appearance, it is recommended you regularly
use a dry or slightly-damp so cloth to keep the exterior of your speakers free from
dust, lint or dirt. To clean dust from the grille, use a vacuum with a brush attachment
and gently brush the surface of the grille.

Features (continued)
e EF50 Series enclosures have a narrow prole to minimize the impact the cabinet
has on the audio signal. e speakers virtually disappear, leaving only a wide, deep
sound stage with pinpoint imaging typical of much higher priced speakers. A special
damping material is also used inside the cabinet to dampen the internal standing waves
which helps the speakers provide a
true-to-life experience.
e EF50 Series have removable face-
plates. e speakers are shipped with
a pewter faceplate. Check the EMP
Tek website for faceplates available in
other colors (sold separately). EF50
Faceplate
EF50C
Faceplate
3
System Setup
To obtain the best possible sound quality from your EF50 Series compact theater speak-
ers, it is important to place the speakers where they will sound best in your listening
room. Your room will inuence the balance, imaging and overall sonic quality of the
system, so you may want to experiment with speaker placement to determine which
location oers the best overall sound for each speaker. As a general guide, use the
room layout diagram and the following descriptions when setting up a home theater
system. Some speakers shown in the diagram may not always be applicable to your
individual system.
Front Main Le and Right Speakers
As a suggested starting point for the front le and right main speakers, try to place your speakers
about 15 inches away from the wall and 7 feet apart from each other. e distance from the
listening position to each speaker should be close to the distance that separates the two main
speakers (i.e.: a triangle). e EMP Tek EF50 compact theater speakers can also be hung on a wall
or placed in bookshelves to better match your décor. If this is how your system will be arranged,
keep in mind the spacing comments above for best performance. Also, slightly angling the
speakers inward towards the listening position may give a more spacious and realistic sound stage.
Center Channel Speaker
For optimal performance in surround sound applications, the center channel speaker (typically
the EF50C) should be placed in the middle between the front le and right main speakers. Oen
this positioning dictates placing the center channel speaker either directly above or below a
television or monitor. Since the EF50C compact theater speaker features video shielding, it may
be placed in close proximity to any television without cause for concern. Also, the EF50C may
be placed in either a horizontal (lying down) or vertical (standing) position.

Surround Channel Speakers
e surround channel speakers should be placed slightly above and behind, and/or to the sides of,
the listening position. For best performance, try to keep the listening position centered between
the surround channel speakers. You may want to experiment with angling the surround speakers
either towards or away from the listening position (depending on your décor and your room’s
furnishings) to obtain better sound quality.
Subwoofer
Placement of the subwoofer will largely determine the quality, quantity, and extension of the bass
frequencies in your listening room. Bass frequencies are reinforced by close room boundaries.
Placing the subwoofer nearer to a corner will make the subwoofer sound louder and boost the
very lowest frequencies. Placing the subwoofer away from a corner or walls will provide the least
reinforcement, possibly making the bass sound subjectively thinner than if the subwoofer were
closer to a wall or corner. A good starting point for subwoofer placement would be along a wall
and up to 3 feet from the corner. You may want to experiment with subwoofer placement and the
subwoofer amplier controls to achieve the proper bass balance.
System Setup (continued)
4

When using a banana jack to attach speaker wires to the binding post terminals, insert
the speaker wire into the banana jack. Next insert the banana jack into the hole provided
in the top of the binding posts. Repeat for the other speaker wire(s) as necessary.
If not using a banana jack, simply loosen the binding nut to allow the hole in the side
of the terminal to become exposed. Strip ¼-inch of the insulation from the end of the
speaker wire and insert the exposed wire end into the now exposed hole in the side of
the terminal. Tighten the binding nut by turning the nut clockwise until the speaker
wire is secured. Repeat for the other speaker wire(s) as necessary.
Attaching Speaker Wires
5

Model EF50 EF50C EF50T
Frequency
Response:
100Hz – 20kHz ±3dB 100Hz – 20kHz ±3dB 80Hz – 20kHz ±3dB
Sensitivity: 85dB (2.83V@1m) 88dB (2.83V@1m) 87dB (2.83V@1m)
Recommended
Power:
35-100 Watts 35-120 Watts 50-150 Watts
Woofer: 4" Aluminized
Fiberglass Matrix
Dual 4" Aluminized
Fiberglass Matrix
Four 4" Aluminized
Fiberglass Matrix
Tweeter: 1" Poly Silk Dome 1" Poly Silk Dome 1" Poly Silk Dome
Impedance: 6 Ohms 8 Ohms 8 Ohms
Crossover
Frequencies:
3000 Hz 3000 Hz 3000 Hz
Video
Shielding:
Yes Yes Yes
Dimensions: Width: 5"
Height: 8½ "
Depth: 6½"
Width: 5"
Height: 14"
Depth: 6½"
Width: 5"
Height: 40 "
Depth: 6½"
Base Width: 9"
Base Height: ¾"
Base Depth: 11½"
Interchangeable
Faceplate:
Check www.emptek.com
for other available colors.
Check www.emptek.com
for other available colors.
Check www.emptek.com
for other available colors.
Grille: Black Black Black
Finish: Black Black Black
Weight: 5.3 lbs. 9.15 lbs. 28.15 lbs.
Specications
6

Warranty
Engineered Music Products “EMP Tek” warrants the EF50, EF50C and EF50T compact
theater speakers (the "Product") to be free from original manufacturing defects in
materials and workmanship for ve (5) years from date of purchase from an authorized
EMP Tek dealer. is warranty extends only to the original consumer purchaser. EMP
Tek does not warrant goods used in industrial applications. is 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 by prepaid delivery
to EMP Tek, along with the original sales invoice or other proof of purchase, which
establishes eligibility for warranty service. EMP Tek will, at its option, replace or repair
the product free of charge and return the product by prepaid delivery. is 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 tness 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. e remedies
provided under this warranty are exclusive and in lieu of all others.
is warranty gives specic 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
Toll Free: [phone] • Fax: [phone]
www.emptek.com
It is EMP Tek policy to continuously incorporate improvements into products; all specications are subject to change without notice.
Copyright © 2007 EMP Tek. All Rights Reserved.