AudioBahn AW1571T User Manual

The Audiobahn Way

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 iook as good as you sound. We strive to take car audio to an
extreme the worid has never seen, and a worid that never stops evoiving.

Audiobahn was estabiished in 1997 with one iong-term goai 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 severai

Innovations, Design & Engineering Showcase Awards, and a marketing team
from around the worid that spends countiess hours deveioping our no
compromise products to satisfy the most discriminating enthusiasts.

Our giobai manufacturing facilities feature iS09002 ratings (the highest
ievei of quaiity controi awarded in the eiectronics manufacturing industry), fuiiy
robotic assembiy iines and a state of the art, Caiifornia based R & D
iaboratory.

Due to overwheiming response from our competitors, and our goai to
participate in even more events this year, we created *"TEAM AUDIOBAHN."
This organization is designed to create a support network aiong with shirts and
perks for team members. "TEAM AUDiOBAHN" is not only for the diehard
competitor, but aiso for anyone that loves car audio as much as we do. With
four ieveis of piay, one is right for you to get started in the Audiobahn famiiy.

Our Technicai Department and entire staff iook to strive above and
beyond the rest of the pack by going that extra miie to heip you out. Whether
you happen to be a veteran competitor, or a beginner car audio enthusiast that
does not know a voice coii from a spider. We are aii here to heip you get the
best system you can with what you have.

Judge foryourseif, and remember what it's aii about, "If it's not
Bigger, Badder & Better, it's not Audiobahn." if audio is your iife,
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.

*To learn more about "TEAM AUDIOBAHN" please give us a call, see our website at

www.audiobahninc.com, or email us at [e-mail] to learn about all the details.

Table of Contents

Table of Contents

INTRODUCTION 3
WOOFER INTRODUCTION 4

WOOFER FEATURES 5-6
THIELE / SMALL PARAMETERS 7

BOX PARAMETERS..................................................................................................................8

GRAPHICAL RESPONSE CURVES 9-12

ENCLOSURES AND SETUP....................................................................................................13

TROUBLE SHOOTING 14

WARNING / DISCLAIMER........................................................................................................ 15

WARRANTY...............................................................................................................................16-17

_______________________________

Dear Customer,

Congratulations on your purchase of the worlds finest brand of car audio products. Here at
Audiobahn Inc. we are devoted to making our musical reproduction the very 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.

Great products and proper installation are only a small piece of the puzzle when it comes to
your system. Make sure that your installer is using only 100% authentic installation accessories
from the Audiobahn Connections. The Audiobahn line has everything ranging from the smallest
terminal, to power wires up to 0 gauge, and 4 channel RCA cables.

To get a free brochure on Audiobahn products in the U.S. call [phone] or e-mail us at
[e-mail].

WARNING

Continuous exposure to sound pressure levels over 100 dB may cause

permanent hearing ioss. High powered autosound systems may produce sound
pressure ieveis weii over 135dB. Need we say more! Use common sense.

if after reading this manuai, you stili have questions regarding your product, we

recommend that you see your nearest Audiobahn Deaier. A list of Authorized
Audiobahn Deaiers 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 a warranty repair or exchange.

Model Number:

Date of Purchase:

Woofer Introduction

Introduction

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 specifications In this manual, our website at
www.audiobahninc.com , or call us at 714-988-0400 or 800-488-8595. As specifications and parameters are
subject to change, we highly advise always checking our web site or calling us for the most current
information. By utilizing the latest materials and construction design and techniques, we are able to offer a
subwoofer 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 Colls (Can be run In either a 2 or 8 ohm load per driver depending on wiring method)
Stamped Steel Chrome Flame Basket
Non-pressed, Non-transfer Paper Cone
Phat Surround
Dual Lug Terminals
2" 4 Layer AVS Voice Coil
KM3' Coated for Virtually no Cone Distortion

Woofer Specifications

Aluminum Voice Coil Former

The voice coil former is black, anodized aluminum for highly efficient thermal transfer. This allows winding
high temperature copper wire in multiple layers for improved efficiency. This allows improved power
handling by effectively dissipating heat.

Extended Pole Piece

The pole piece has been extended to provide a more linear magnetic field for the operation of the woofer. This
lowers distortion and provides the woofer with better low frequency response.

Vented Oversized Back Piate

The back plate has been stepped deeper to allow the woofer more excursion without bottoming out. Additionally,
the back plate is vented with a radius aerodynamic back vent which efficiently and quickly circulates cool air
around the voice coil. This allows for more excursion and higher power handling without damaging the sub.

Voice Coii

The 4-layer, edge wound voice coil design of the speaker allows for a variety of impedance loads to be
configured when matched with multiple subs. Please continue to the wiring diagram portion of this manual for
possible configurations you can run. The Natural Sound subs have a dual 4 ohm voice coil operation.

Woofer Features

1.5 Inch Treated Foam Surround

The 1.5 inch treated foam surround is resilient to temperature variations and provides the
consistent support necessary for the linear motion of the speaker cone. In addition, the inherent
damping capabilities eliminates the transmission of sonic disturbances between the cone and the
frame of the speaker. This greatly improves the clarity of the speakers frequency response.

Flat Spider

The speakers linear compliance is balanced through the use of a flat spider design. A flat spider
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 finishes. We
have spared no expense in this area and not only is it a protective finish, but it is also a great
addition to any plexi style enclosure.

Convex Dust Cap

The use of a convex dust cap serves to increase the cone rigidity and improve power handling by forcing
more air through the voice coil. Added benefits include smooth frequency response.

Audiobahn Woofer Parameters

Model #

Fs 38.6 Hz 42.7 Hz 37.4 Hz 28.2 Hz
Qts 0.36
Qes
Qms 3.72 5.64 5.28 4.65
Vas (Liters) 12.5 Liters 20 Liters 69 Liters 132 Liters
Vas (Cu. Ft.)
Re 3.3 ohms 3.0 ohms 3.50 ohms 3.2 ohms
Le 0.75 mH 1.4 mH 1.40 mH 1.00 mH
Mmd 69 a rams 94 Grams 105 arams 180 arams

00

Xmax +/- 7 mm +/- 13mm +/- 7 mm +/-11 mm
RMS 200 watts 300 watts 400 Watts 500 watts
Sd 0.020 M2 0.033 M2 0.052 M2 0.078 M2
Free. ResD.
Efficiency

An EBP of iess then 45 is SUGGESTED for oniv a seaied box and oreater then 65 for a oorted box.

EBP

AW831T AW1051T AW1251T AW1571T

0.82

0.4

0.45 Cu.Ft. 0.7 Cu.Ft. 2.45 Cu.Ft. 4.7 Cu.Ft.

30Hz-1kHz 28Hz-1kHz 24Hz-1kHz 21 Hz-1 kHz

90.3 dB 91 dB

96

0.96 0.88 0.55

44 42

0.76 0.49

92.1 dB 93.4 dB

51

Dimensions

Deoth
Moie 7" 9" 10 7/8" 13 7/8"
Diamater 8 3/8" 10 1/4" 12 1/2" 15 3/8"
Disoiacement 0.08 Cu.Ft. 0.10 Cu. Ft. 0.15 Cu. Ft. 0.21 Cu.Ft.

3 7/16" 4 5/8"

5 1/4"

6 7/8"

Box Parameters

Audiobahn Box Specifications

All ports listed are circle ports unless otherwise stated. Surface area of a circle port = (3.14) X (radius) (squared)

Remember to build your box to the total volume, not iust air space, as total volume includes all displacement.

Model# AW831T

Ported

Air Space (Cu. Ft.) 0.7 0.65 1.3 1.7
Port Size (Inches) 2x6.1 2x6.5 3 x 6.75 3x7
Port Vel. (%) 12.77 33.45 27.15 28.15

-3dB (Hz) 36 40 44 40
TuneFrea. (Hz)
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.009 0.01 0.024 0.025
Total Vol. (Cu. Ft.) 0.75 0.75 1.5 2

40 40 40 35

Ported

Air Space (Cu. Ft.) 1.15 1.4 2.3 2.65
Port Size (Inches) 3x9 3 x 6.75 4x9 4x7.5
Port Vel. (%) 6.26 16.75 14.18 16.74

-3dB (Hz) 33 31 35 35
TuneFrea. (Hz) 38 39 35 35
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.033 0.024 0.06 0.048
Total Vol. (Cu. Ft.) 1.25 1.5 2.5 3

AW1051T AW1251T AW1571T

Evervdav Bass Performer

Itimate SPL Bass Box (not designed for competition use)

U

Ported

Air Space (Cu. Ft.) 1.9 2.4 3.15 3.55
Port Size (Inches) 3 x 5.75 4x6.8 (2)4x12 (2)4x11.25
Port Vel. (%) 5.81 9.96 7.56 8.69

-3dB (Hz) 30 30 30 31.5
TuneFrea. (Hz) 35 39 36 35
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.02 0.04 0.166 0.152
Total Vol. (Cu. Ft.) 2 2.5 3.5 4

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.

EBP 96

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,

Model #

the higher the frequency the sub will play, and the more power it will handle.

AW831T AW1051T AW1251T AW1571T

44 42 51

__________________

Sealed

Minimum (Cu. Ft.) 0.25 0.75 1 1.25
Maximum (Cu. Ft.) 1 2 2 3.5
SPL (dB) 84.5 83.8 88 89.2

All sealed boxes already include the displacment for the subwoofer. NR = (Not Recommended)

8

AW831T Curves

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AW1051T Curves

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AW1251T Curves

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AW1571T Curves

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Enclosures And Setup

Building an Enclosure

To work properly, the walls of the enclosure must be rigid and not flex when subjected to high pressure
generated by the speaker's operation. For optimum performance, we recommend using 3/4" MDF (Medium
Density FIberboard) and Internal bracing. The enclosure should be glued together along with support of
screws or nails. Because MDF is porous, it is suggested that you seal the outside with polyurethane prior to
painting or carpeting.

Calculating Volume

Calculating Is merely a matter of measuring the dimensions In Inches, and using the following formula:
Box Volume = (Height) x (Width) x (Depth) divided by 1728. This will give you the volume of the box in cubic

feet.
If two facing sides are uneven length, add them together, and divide by 2 to take the average. Using this

number will give you the volume without the necessity of calculating the box in sections, and adding the
sections together. The thickness of the baffle material reduces the internal volume so this must be subtracted
from the outside dimensions to determine the internal volume. The amount of air displaced by each model Is
listed on the specifications sheet in this manual and should also be subtracted from the gross volume
calculation. All box parameters Include displacement for ports and subs. These specs do not Include the
volume of the material used to build the box, so this must still be factored into the calculation.

Subwoofer Crossover

There are two operational types of crossovers, passive and active. Passive crossovers (colls and conductors)
are placed on the speaker leads between the amplifier and the speaker. An active crossover is an electronic
filter which separates the audio signal fed to different amplifiers. For optimum subwoofer performance, we
recommend using an active 80-1 OOHz low pass crossover at 12/dB/octive.

12

If you start having problems with distorted sound or loss
performance after installing your subs, you can follow the
instructions below to try and locate what is causing the
problem.

1) If you have any distorted sound, loss of performance,
or rattling from your subs, check the connections
running from your amplifier or other processor to the
box. You will also want to check the connections inside
the box to make sure no wires have become unhooked
or are loose.

2) If the above does not solve the problem, check your
enclosure thoroughly to see if there are any leaks,
cracks, or broken pieces. Any loss of structural integrity
of your enclosure can cause significant performance
loss and distortion.

3) The next step you can take is to remove the subs and
look for any burned wire leads or separated
components. You can normally smell something
burning when a sub blows or is going bad. Sometimes
when you play subs to hard for too long, they will start
to heat up.

4) If none of the above steps solve the problem, you will
want to start looking at the other components in the
vehicle. Start by checking all connections to and from
the box, amplifier, source unit, or any other processors
you may be using. You will need to reference to that
particular manufacturer for any setting configurations or
troubleshooting.

13

Warning / Disclaimer

WARNING

Investigate the layout of your automobile thoroughly before drilling or cutting any holes.
Take care when you work near the gas tanks, gas lines, hydraulic lines, and electrical wiring.
Attach the system securely to the automobile to prevent damage, particularly in the event
of an accident. Do not mount the system so that the wire connections are unprotected
or are subject to pinching or damage from nearby objects.

The +12V DC power wire must be fused at the battery positive terminal connection.
Before making or breaking power connections at the system power terminals,
disconnect the +12V wire at the battery end. Confirm your radio/head unit and/or other
equipment is turned off while connecting the input jacks and speaker terminals.
If you need to replace the power fuse, replace it only with a fuse identical to that
supplied with the system. Using a fuse of different type or rating may result in damage to
this system which is not covered by the warranty.

Disclaimer

Specifications are subject to change without notice.

For the most updated Specifications call Audiobahn,

your local Authorized Audiobahn Dealer,

or check the Audiobahn website.

www.audiobahninc.com

15

Audiobahn Consumer

Product Warranty Policy

Audiobahn products are manufactured with the highest quaiity components and some of

the most advanced technology avaiiable. Because of this, we recommend that you have
your new products instalied by an

Audiobahn Deaiers can be found on our web page).

Warranty Period: One year from the originai date of purchase.
Warranty Coverage: This warranty covers manufacturer defects oniy. The warranty is

appiicabie to the originai purchaser, and is non-transferabie. You must have a receipt from

Authorized Audiobahn Dealer that shows the location of purchase, price paid, and

an
date of purchase.

(Products purchased by consumers from an Authorized Audiobahn Dealer outside the
United States, are covered only by that countries Distributor and not by Audiobahn).

Notes:

Complete subwoofer enclosures (Audiobahn will replace defective subwoofers,
plexiglass, or neon only. Do not send the entire enclosure, unless the enclosure is
defective itself. You must receive prior authorization and an RMt before sending in any
complete enclosure).

Audiobahn will only replace L.E.D.(s) found to be defective at the time of purchase.

Authorized Audiobahn Deaier.(A iist of Authorized

Audiobahn warranties do not cover the foiiowing:

• Any product not purchased from an Authorized Audiobahn Dealer (including Internet
dealers)

• Damage caused by abuse, misuse, accident, water / flood, or theft (including any
cosmetic damage to the body of the product)

* Damage caused by improper installation
* Any cost or expense related to removal or reinstallation

• Any unauthorized services

* Any product that has the serial number removed, altered, or defaced

• Subsequent damage to any other components

• Pinched, cut, or stripped wires

* Any product that is new, and/or found to be in working condition
* L.E.D. indicators on electronics

* •

16

Warranty Continued

How to receive warranty service: Contact your iocai Authorized Audiobahn Dealer, or caii Audiobahn at
[phone] between the hours of 9:00 AM and 5:00 PM PST.

if you are having probiems with your system, we recommend you check the product carefuiiy and
thoroughiy to confirm that the product truiy has a manufacturer defect; as opposed to abuse, or other
components in the system causing the faiiure. This might inciude having an Authorized Audiobahn
Dealer look at the product to confirm the source of the problem. Any product found to have a
manufacturer defect will be replaced with a new piece of the same or similar model, or repaired at the
discretion of Audiobahn. Any product found to have no manufacturer defect will be returned to the sender
at their cost.

You must acquire a Return Authorization Number (R^) prior to returning ANY product to
Audiobahn. That Return Authorization Number {RM) must be prominently and clearly marked on the

outside of the shipping carton, or product delivery will be refused (no exceptions will be made).
Please note: All shipping and handling (to and from) charges will be the sole responsibility of the

consumer.
Please record and keep your Return Authorization Number (R^) in the event that further communication

is required.

Return Authorization Number (RA#):

Date product was sent:

Audiobahn Headquarters

Phone [phone] Fax. [phone]

Pacific Coast Time : 9am-5pm Mon. - Fri.

[e-mail]

Contact Information

114 South Berry St.

Brea, CA 92821

17