Hifonics Brutus BRZ12D4 User manual

BRZ SERIES
BRZ12D4 / BRZ15D4
BRZ12SQD4

BRUTUS BRZ SERIES
CAR AUDIO SUBWOOFERS
Congratulations on your purchase of the new Hifonics BRUTUS BRZ
Series subwoofer system. The BRUTUS BRZ subwoofer series has
received a progressive new look as well as our innovative dual spider
spacing technology. The BRUTUS BRZ subwoofer series has made
its’ name in the industry as one of the most efficient and loudest
subwoofers in its’ price range. The BRUTUS BRZ subwoofers 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 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.
Available In DVC 4-Ohm 2.5” High-Temp Voice Coils
12” & 15” Round / 12” Square Subwoofers
Rubber Surround
Dual Flat Nomex Spider With Woven Tinsel Leads
Polypropylene Cone
Nickel Plated Push & Insert Speaker Terminals
Double-Stack Magnet Assembly
Heat Dispersing Ported Nickel Plated Back Plate
Ultra Ridged Stamped Steel Basket
High Strength ABS Motor Cover
Operates In Sealed & Ported Enclosures
Black Chrome-Plated Gasket

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 rabbet 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.

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

A
B
C
HIFONICS UNIVERSAL SUBWOOFERS