Sound Tube FPS20 Manual

© 2004 SoundTube Entertainment, Inc. All rights reserved. REV 07.20.04
Specifications: FPS20-8
System Type
2 x 50 mm (2.0 in) Stereo high-directivity focused
sound, voice coil/8 Ohm direct
Frequency Response (-3 dB)1250 Hz - 16.2 kHz
Frequency Response (-6 dB)1230 Hz - 17.3 kHz
Low Frequency (-10 dB)1210 Hz - 18.7 kHz
Max. Program Power 50 W
Max. Continuous Power RMS225 W
Max. SPL dB @ .5M 108 dB
Sensitivity dB @ 1W/0.5M391 dB
Impedance 8 Ohm (nominal value)
Coverage Angle (-6 dB) 50º @ 2 kHz
Directivity Factor (Q) 12.63 (100 Hz to 10 kHz averaged) 27.35 @ 2 kHz
Directivity Index (DI) 9.31 dB (100 Hz to 10 kHz averaged) 14.37 dB @ 2 kHz
Transducers 2 x 50 mm (2.0 in) Wide-range, fiber cone, rubber surround
Inputs 3 M (10.0 ft) Hardwire lead, 4 conductor
Dome Material Custom molded PETG clear dome
Enclosure Material Molded Plastic ABS driver housing
Colors Clear, custom translucent & opaque colors available
Dome Diameter 514 mm (20.25 in)
Total Height 223 mm (8.75 in)
Weight 1.70 kG (3.75 lbs)
Accessories
Optional SoundSleeves™ & Wall Mount Bracket
Key Features
• Patented Dual-Parabolic™dispersion
control technology provides a dramatic
hot spot with crisp stereo separation.
• 514 mm (20.25 in) Custom-molded PETG
clear polymer dome.
• Twin 50 mm (2.0 in) drivers for stereo
music & messaging.
• Patented ZeroReflection™enclosure
technology for accurate sound
reproduction.
• Narrow 50° coverage angle for sharp focus.
• Single point balanced mounting for
easier and cleaner looking installs.
• Shipped fully assembled; bulk shipping
available upon customer request.
• Optional wall-mount bracket available.
• Custom colors and printed decorative
and promotional dome covers optional.
App
Applications
Only 20.25” in diameter, SoundTube’s
FPS20 delivers a targeted audio footprint
for a single listener. Tight coverage,
wide-range stereo sound and a smaller
dome make the FPS20 the ideal choice
for focused audio applications, including
kiosks, P.O.P. displays, shows, plasma
displays or anywhere the visual impact
must be minimized.
P
atented Dual-Parabolic™
Technolog y
SoundTube Entertainment is constantly
developing new technologies that enhance
audio product performance. SoundTube
Entertainment’s innovations are protected
by multiple U.S. & international patents,
which explicitly cover SoundTube dome,
enclosure and dispersion technologies.
SoundTube Entertainment actively defends
its patents in order to protect SoundTube
resellers and end users.
T
echnical Data
SoundTube Entertainment strives to
provide complete and effective technical
information and data to dealers, engineers
and designers. All data are available
from SoundTube Entertainment, or at
www.soundtube.com.
1
Frequency response is measured in full space.
2
Continuous power rating, EIA-426-B test.
3
2.83 Volts at a distance of 0.5 meters.
SoundTube continually develops new product innovations and improvements. Updates to existing
products without prior notice are an example of SoundTube’s drive for constant improvement.
FPS20
FPS20
Sound-Focusing Stereo Speaker
Technical Information for System Engineers

Technical data and downloads include:
EASE™ data – 3-D polar plots
Tech Sheets – Technical information and
architectural specs for system engineers.
Data Acquisition
All performance data acquired at
SoundTube’s Technical Measurement
Center (TMC) are analyzed using a variety
of standard measurement techniques,
including Maximum Length Sequence
(MLS) and Time Delay Spectrometry
(TDS). Performance, development and
data acquisitions tools include: Gold Line
TEF 20 Suite, CLIO, LMS, LEAP, and pro-
prietary modeling software.
D
ata for Other SoundTube
Products
Also available: Sales & installation infor-
mation for all SoundTube speaker systems,
including open-ceiling, in-ceiling, surface-
mount, in-ground and sound-focusing
speakers.
Frequency Response (unequalized)
Phase Response
Impedance Response
Frequency Response on-axis in full space (4π).
SPL, 1W, 1M (dB)
Frequency (Hz)
FPS20
FPS20
Sound-Focusing Stereo Speaker
Technical Information for System Engineers
Technical data, EASE
™
plots, SoundTubeSPEC
™
software & product downloads available at www.soundtube.com

Horizontal One Octave Polars
500 Hz250 Hz
1000 Hz
4000 Hz 8000 Hz
2000 Hz
FPS20
FPS20
Sound-Focusing Stereo Speaker
Technical Information for System Engineers
Technical data, EASE
™
plots, SoundTubeSPEC
™
software & product downloads available at www.soundtube.com

Mechanical Drawings
Optional Accessories
Architectural Specifications
The loudspeaker shall consist of two 50
mm (2.0 in) transducers with a voice coil
diamter of 25 mm (1.0 in). Sound waves
from the transducers shall be reflected
from a 514 mm (20.25 in) Dual-Parabolic™
sound dome.
Performance specifications of a typical
production unit shall be as follows: Usable
frequency response shall extend from
210 Hz - 18.7 kHz. The loudspeaker shall be
available in 8 Ohm impedance mode. Rated
power capacity of the components and net-
work shall be at least 25 Watts RMS.
The dome shall be constructed of cus-
tom-molded PETG with an ABS driver
enclosure. The transducers shall have a
fiber cone with butyl rubber surround. The
grille shall be constructed of heat-resistant
ABS plastic material. The overall dome and
cabinet dimensions shall be no more than
514 mm (20.25 in) in diameter by 223 mm
(8.75 in) in height and weigh no more than
1.70 kG (3.75 lbs).
Installation for the FPS30 shall be
by single point hanging aircraft cable
(AC-HC20) with a 1/4 -20 stud into a
threaded insert on dome apex. Additional
accessories include Wall Mount Bracket
(AC-WB3) and Threaded Hanging Rod
(AC-TR36). Wall bracket is constructed of
cold rolled steel. The hardwired input
connectors shall be tinned, 24-gauge,
4-conductor, color-coded wires. Optional
decorative SoundSleeve™ available for in-
store marketing.
SoundTube Entertainment
6430 North Business Park Loop
Park City, Utah 84098
Phone [phone]
Fax [phone]
Toll Free 800.647.TUBE
www.soundtube.com
All SoundTube products come
with a 5-year limited warranty .
FPS20
FPS20
Sound-Focusing Stereo Speaker
Technical Information for System Engineers
(not shown)
AC-TR36 – Threaded Hanging Rod AC-FE1 – Forged Eyebolt
514 mm (20.25 in)
223 mm (8.75 in)
HC20 20’ Hanging Cable
with SpeedClamp™
WB3 Wall Mount Bracket
CPSU Custom Printed SoundSleeve™
89.2 cm (35.1 in)
SoundTube Entertainment manufactures a complete line of speakers for:
Open-Ceiling • In-Ceiling • Surface-Mount • Outdoor • Sound-Focusing
All SoundTube products are designed and engineered in the USA.