Hifonics ATLAS ATL12D2 User manual

1
ATLAS SERIES
CAR AUDIO SUBWOOFERS
Congratulations on your purchase of the new Hifonics ATLAS
Series subwoofer system. As Hifonics celebrates 25 years of shaking
the mobile audio industry, the ATLAS received a progressive new
look. The ATLAS made its’ name in the industry as one of the most
durable and loudest subwoofers in its’ price range. The ATLAS
feature incredible cosmetic detail, accurate bass reproduction
through a wide range of frequencies, and impressive power handling
capabilities.
As with all high quality car audio products, we recommend
professional installation by an authorised Hifonics dealer.
Your dealers knowledge and experience can ensure a problem free
and cosmetically integrated installation.
If you choose to install the subwoofers yourself, please read the entire
manual very carefully.
Available In DVC 2-Ohm & 4-Ohm High-Temp Voice Coils
12” Round Subwoofers
1” Tall Rubber Reinforced and Stitched Rubber Surround
Single Flat Nomex Spider With Woven Tinsel Leads
Polypropylene Cone With Woven Honeycomb Support Body
Custom Parallel/Series Input Nickel Plated Push Terminals
140oz Double-Stack Magnet Assembly
Heat Dispersing Ported Nickel Plated Back Plate
Trim Ring To Conceal Mounting Screws
High Strength ABS Motor Cover
Operates In Sealed & Ported Enclosures

2
SUBWOOFER INSTALLATION AND WIRING DIRECTIONS
Enclosure Materials
Typically, 5/8” or 3/4” MDF (Medium Density Fiber Board) is best
for most applications. 3/4” MDF is recommended.
Enclosure Build Materials
Connecting joints need to be glued and screwed to ensure no
air escapes and joints do not separate under high pressure.
Mitered and rabbit joints also help to ensure the enclosure joints
are secure.
Bracing
Internal bracing is also recommended to prevent flexing and to
strengthen the enclosure.
Note: The volume taken up by the bracing should be added to the
total enclosure interior volume.
There are two common bracing methods.
1. Corner Bracing: These help prevent the connection joints
from separating under heavy vibration and air pressure.
Use 1’ x 1” MDF at all interior joints
2. Diagonal Bracing: These internal braces connect the top side
to the bottom side as well front side to back side. This prevents
the wood from bowing or pushing outwards.
Use 1” x 2” with 1” surface contact that is glued and screwed.
Wiring
Wiring Parallel, Series or Parallel/Series will affect the final
impedance at the amp and great care must taken to ensure the
amp is not driven below it’s intended impedance capabilities.

3

4

5
Q The energy losses of relative damping (ratio of stored to dissipated
energy or ratio of reactive to resistive energy).
Fs Free air resonance of driver in Hz.
Qms Mechanical Q.
Vas Volume of air equivalent to driver from the rest position.
Cms Mechanical compliance of a loud speaker piston.
Mms Moving mass of total loud speaker piston assembly.
Xmax The maximum linear excursion of a loud speaker.
Sd Surface area of the cone.
Dia The piston diameter of a loud speaker.
Qes Electrical Q of a system.
Re DC resistance.
Le VC inductance.
Pe Maximum input power.
Qts Total Q of the system.
Sens Sensitivity. An efficiency measurement in dB’s.
Vc Volume of a closed or sealed enclosure
Vb Volume of a vented enclosure.
Fc The resonant frequency of a closed or sealed system
Fb The resonant frequency of a vented system
F3 The half-power (-3dB) frequency of a loud speaker enclosure
Qtc The Q of a loud speaker at Fc in a closed box, considering both
it’s electrical and mechanical resistance.
QL The Q of a vented box, resulting from all box losses.
DV Diameter of vent.
LV Length of vent.
H Height.
W Width.
D Depth
Glossary of Terms

6
DVC 4-Ohms
Speaker Terminal Block
Each Atlas comes with 2 jumper pins in the Terminal Block.
++
--
Parallel Coils / Parallel Subwoofers
++
--
++
--
+
-
Series Coils / Series Subwoofers
++
--
++
--
+
-
Series 8-Ohms
++
--
+
-
Parallel 2-Ohms
++
--
+
-
Series Coils / Parallel Subwoofers
4-Ohms
16-Ohms
1-Ohm
++
--
++
--
+
-

7
DVC 2-Ohms
Speaker Terminal Block
Each Atlas comes with 2 jumper pins in the Terminal Block.
++
--
Parallel Coils / Parallel Subwoofers
++
--
++
--
+
-
Series Coils / Series Subwoofers
++
--
++
--
+
-
Series 4-Ohms
++
--
+
-
Parallel 1-Ohm
++
--
+
-
Series Coils / Parallel Subwoofers
2-Ohms
8-Ohms
0.5-Ohm
++
--
++
--
+
-

Subwoofer Dimensions
Due to the vented backplate, you must allow for an
additional 2” behind the subwoofer when designing
your speaker enclosure.
8
A
B
A - Cut Out Diameter
304mm / 11.97”
B - Mounting Depth
183.3mm / 7.22”

9
As the manufacturer of Maxxsonics, MB Quart, Autotek, Crunch and Hifonics car audio products,
Maxxsonics USA Inc. Warrants to the original consumer purchaser the amplifier to be free from
defects in material and workmanship for one (1) Year from date of purchase.
All other parts and accessories of the system are warrantied to be free from defects in
material and workmanship for one (1) year from date of purchase. Maxxsonics will
repair or replace at it’s option and free of charge during the warranty period, any system
component that proves defective in materials and workmanship under normal installation,
use and service provided that the product is returned to the authorized Maxxsonics dealer
from where it was purchased. A photo copy of the original receipt must accompany the
product being returned.
Valid purchase receipts will contain the name and address of the authorized reseller.
Any damage to the product as a result of misuse, abuse, accident, incorrect wiring,
improper installation, alteration of date code or bar code labels, revolution, natural
disaster, or any sneaky stuff because someone messed up, repair or alteration out side
of our factory or authorized service centers and any thing else you have done that you
should not have done is not covered.
This warranty is limited to defective parts and specifically excludes any incidental
or consequential damages connected therewith. This warranty is not to be construed
as an insurance policy.
Warranty on installation labor, removal, re-installation and freight charges are not the
responsibility of Maxxsonics USA Inc.
Warranty products damaged as a result of insufficient or improper packing materials
are not covered by this limited warranty and such damaged product will be returned
“as is” at the expense of the owner.
Maxxsonics Limited Warranty