Hifionics BRZ12D4 User Manual

BRZ SERIES  
BRZ12D4 / BRZ15D4  
BRZ12SQD4  
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.  
2
3
4
Glossary of Terms  
Q
The energy losses of relative damping (ratio of stored to dissipated  
energy or ratio of reactive to resistive energy).  
Free air resonance of driver in Hz.  
Fs  
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
W
D
Height.  
Width.  
Depth  
5
C
B
A
7
Maxxsonics Limited Warranty  
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.  
8
PART#F0709  

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