AudioBahn AW1051J User manual

PLEASE READ THIS MANUAL
BEFORE OPERATING THIS UNIT.
RETAIN FOR FUTURE REFERENCE.
AW1051J / AW1251J / AW1571J
OWNER’S MANUAL

To bring the product to market that excites the consumer through sound and
vision from an orientation of integrity and customer service. We make you look as
good as you sound. We strive to take car audio to an extreme the world has never
seen, and a world that never stops evolving.
Audiobahn was established in 1997 with one long-term goal in mind, “Build
it Bigger, Badder, & Better, and the people will take notice!” We back this statement
with an engineering team that has brought home several Innovations, Design &
Engineering Showcase Awards, and a marketing team from around the world that
spends countless hours developing our no compromise products to satisfy the most
discriminating enthusiasts.
Our global manufacturing facilities feature ISO9002 ratings (the highest level
of quality control awarded in the electronics manufacturing industry), fully robotic as-
sembly lines and a state of the art, California based R & D laboratory.
Our Technical Department and entire staff look to strive above and beyond
the rest of the pack by going that extra mile to help you out. Whether you happen to
be a veteran competitor, or a beginner car audio enthusiast who does not know a
voice coil from a spider. We are all her to help you get the best system you can with
what you have.
Judge for yourself, and remember what it’s all about, “If it’s not Bigger, Bad-
der & Better, it’s not Audiobahn.” If audio is your life, Audiobahn is the brand for you!
We make you look as good as you sound. People never stop trying to get the best
product, so we will never stop making it.
The Audiobahn Way

Introduction___________________________________________________ 3
Woofer Introduction_____________________________________________ 4
Woofer Features________________________________________________ 5-6
Thiele / Small Parameters_________________________________________ 7
Box Parameters_________________________________________________ 8
Graphical Response Curves_______________________________________ 9-11
Enclosures and Setup___________________________________________ 12
Troubleshooting________________________________________________ 13
Warning and Disclaimer__________________________________________ 14
Warranty______________________________________________________ 15-16
Notes_________________________________________________________ 17-18
TABLE OF CONTENTS

Dear Customer,
Congratulations on your purchase of the worlds nest brand of car audio products. Here at
Audiobahn Inc. we are devoted to making our musical reproduction the vert best, and we
are pleased you have chosen our product. Through years of engineering expertise, hand
craftsmanship, and critical testing procedures, we have created a wide range of products
that reproduce music with all the clarity and richness you deserve.
For maximum performance we recommend you have your Audiobahn product installed by
an Authorized Audiobahn Dealer, as we provide specialized training through our Audiobahn
Installer Training Programs. Please read your warranty, keep your receipt, and original
carton for possible future use.
To get a free brochure on Audiobahn products in the US call [phone] or e-mail us at
[email protected].
WARNING
Continuous exposure to sound pressure levels over 100dB may cause permanent
hearing loss. High powered autosound systems may produce sound pressure levels
well over 135dB. Need we say more! Use common sense.
If after reading this manual you still have questions regarding your product, we recom-
mend that you see your nearest Audiobahn Dealer. A list of Authorized Audiobahn
Dealers can be found on our web page. If you need further assistance, feel free to call
us at [phone] and ask for the Technical Department. Be sure to have the model
number, date of purchase, and invoice number available when you call.
The model number can be located on the outside of the carton. Record this in the space
provided below along with the date of purchase. It is a good idea to keep your receipt
with this as you will need it in the case of needing a warranty, repair service or ex-
change.
Date of Purchase: _____________________Model Number:___________________
INTRODUCTION
3

Woofer Introduction
4
Audiobahn woofers are a low frequency driver designed primarily for use in small sealed or
vented enclosures depending on the model of sub. Please check the specications in this
manual, our website at www.audiobahn.com. As specications and parameters are subject
to change, we highly advise always checking our website or calling us for the most current
information. By utilizing the latest materials and construction design and techniques, we
are able to offer a sub woofer with optimized low frequency response..
Woofer Content
Audiobahn Dual 4 Ohm Coil Natural Sound Sub
Audiobahn Sticker
Installation & Owner’s Manual
Wipe Towel
Registration and Warranty Card
Technical Design Features
Dual 4 Ohm Voice Coils (Can be run in either a 2 or 8 ohm load per driver depending on
wiring method) Stamped Steel Chrome Flame Basket
Stamped Steel Chrome Flame Basket
KM3 Paper Cone
J-type Surround
Dual Lug Terminals
2” 4 Layer AVS Voice Coil

Woofer Specifications
5
Aluminum Voice Coil Former
The voice coil former is black, anodized aluminum for highly efcient thermal transfer. This
allows winding high temperature copper wire in multiple layers for improved efciency. This
allows improved power handling by effectively dissipating heat.
Extended Pole Piece
The pole piece has been extended to provide a more linear magnetic eld for the opera-
tion of the woofer. This lowers distortion and provides the woofer with better low frequency
response.
Vented Oversized Back Plate
The back plate has been stepped deeper to allow the woofer more excursion without bot-
toming out. Additionally, the back plate is vented with a radius aerodynamic back vent
which efciently and quickly circulates cool air around the voice coil. This allows for more
excursion and higher power handling without damaging the sub.
Voice Coil
The 4-Layer, edge wound voice coil design of the speaker allows for a variety of impedance
loads to be congured when matched with multiple subs. Please continue to the wiring
diagram portion of this manual for possible congurations you can run. The Natural Sound
subs have a dual 4 ohm voice coil operation.

Woofer Features
6
Flat Spider
The speaker linear compliance is balanced trough the use of a at spider design. A at spi-
der provides symmetrical control of the voice coil through it’s cone excursion. Linear cone
excursion reduces harmonic distortion for improved sound quality. This allows for reduced
mechanical distortion for better sound quality.
Chrome Finish
Chrome has long been an industry standard in terms of durability in protective metal n-
ishes. We have spared no expense in this area and not only is it a protective nish, but it is
also a great addition to any plexi style enclosure.

Parameters
7
J J J

Box Parameters
8
Model # AW1051J AW1251J AW1571J
Ported
Air Space (Cu. Ft.) 0.65 1.3 1.7
Port Size (Inches) 2 x 6.5 3 x 6.75 3 x 7
Port Vel. (%) 33.45 27.15 28.15
-3dB (Hz) 40 44 40
Tune Freq. (Hz) 40 40 35
Sub Disp. (Cu. Ft.) 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.01 0.024 0.025
Total Vol. (Cu. Ft.) 0.75 1.5 2
Ported
Air Space (Cu. Ft.) 1.4 2.3 2.65
Port Size (Inches) 3 x 6.75 4 x 9 4 x 7.5
Port Vel. (%) 16.75 14.18 16.74
-3dB (Hz) 31 35 35
Tune Freq. (Hz) 39 35 35
Sub Disp. (Cu. Ft.) 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.024 0.06 0.048
Total Vol. (Cu. Ft.) 1.5 2.5 3
Ported
Air Space (Cu. Ft.) 2.4 3.15 3.55
Port Size (Inches) 4 x 6.8 (2) 4 x 12 (2) 4 x 11.25
Port Vel. (%) 9.96 7.56 8.69
-3dB (Hz) 30 30 31.5
Tune Freq. (Hz) 39 36 35
Sub Disp. (Cu. Ft.) 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.04 0.166 0.152
Total Vol. (Cu. Ft.) 2.5 3.5 4
EBP
44 42 51
Model # AW1051J AW1251J AW1571J
Sealed
Minimum (Cu. Ft.) 0.75 1 1.25
Maximum (Cu. Ft.) 2 2 3.5
SPL (dB) 83.8 88 89.2
All sealed boxes already include the displacment for the subwoofer. NR = (Not Recommended)
Audiobahn Box Specifications
Remember to build your box to the total volume, not just air space, as total volume includes all displacement.
An EBP of less then 45 is SUGGESTED for only a sealed box and greater then 65 for a ported box.
The larger a sealed box is, the lower the sub will play, but the less power it will handle. The smaller a sealed box is,
the higher the frequency the sub will play, and the more power it will handle.
All ports listed are circle ports unless otherwise stated. Surface area of a circle port = (3.14) X (radius) (squared)
Ultimate SPL Bass Box
Everyday Bass Performer
A port velocity of 20% or under is good for everday use and 5% or under for SPL competition . Port velocity
translates to port noise, so the lower the number, the less port noise you will incur.

AW1051J CURVES
9
Space
Saver
Everyday
Ultimate