
ZEUS SERIES
CAR AUDIO SUBWOOFERS
Congratulations on your purchase of the new Hifonics ZEUS
Series subwoofer system. The ZW12D4 subwoofer brings big
bass at an affordable price!
As with all high quality car audio products, we recommend
professional installation by an authorized 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.
12” Round Subwoofer
Rigid Polypropylene Cone & Dust Cap
Blue Foam Surround
Blue Nomex Spider
Stamp Steel Frame
1.5” High Temp Voice Coil
DVC 4-Ohm
Spade Style Speaker Terminals
27 oz Vented Motor
Protective Rubber Magnet Wrap
Operates In Sealed & Ported Enclosures

SUBWOOFER INSTALLATION 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.