Dear Customer,
Congratulations on your purchaseofthe world's finest brandofcar audio.
At MA Audio we are committed to producing musical reproduction at its best,
of
and we are pleased you chose our product. Through years
procedures and hand craftsmanship, we have created a wide range
critical testing
of
products
that reproduce music with all the clarity and richness you deserve.
For maximum performance we recommend you have your new MA
Audio product installed by an Authorized MA Audio Dealer. Please read
your warranty and retain your receipt and original carton for possible
future use.
To
learn more about
other information, please visit
MA
Audio, current world records held by Ma Audio and
us
on the world wide web at:
www.MAAudio.com
Continuous, excessive exposure to sound pressure levels in excessof85
can cause a loss in hearing. While MA Audio sound systems are capable
producing sound pressure levels greater than 85dB, they are also designed for
enjoyment at reasonable levels. Please observe all local sound ordinances
while listening to your MA Audio sound system
!!
Attention!!
dB
of
TABLE
OF'
CONTENTS
FEATURES & SPECIFICATIONS
CALCULATING ENCLOSURE VOLUME
SUBWOOFER PARAMETERS
ENCLOSURE CONSTRUCTION
SUBWOOFER WIRING DIAGRAMS
TROUBLESHOOTING
WARRANTY
WARNING
1
2
3
4
5
7
9
10
FEATURES
•
Glafibe™High
•
Rubber
Rigid
•
•
Coilvent™T-YoketoKeep
•
Patented
•
Ultra
• New
•
Hi-Temp
•
Double
•
Dual
•
Platinum
•
Rubber
•
Dual
Non-Pressed
Strong
Patented
Progressive
4-0hm
Strength
Surround
Double
Heavy
Thermo-Cooling
Polypropylene
Die-Cast
Kapton
Stacked
Voice
Strontium
Dupont
Plated
Sealant
Block
Gasket
Voice Coil
Glass
Fiber
Enhanced
StitchingtoGuarantee
Duty
Cone
Voice Coil Always
Motor
Dust
Structure
Cap
Basket
Coil
Former
Magnets
Spiders
Terminals
Surround
Longevity
Running
CoolatHigh
Power
SPECIFICA
Die-Cast
basket
dissipates heat far better than steel which allows more
speaker
resonate frequency.
Non
The
combination. It also has been treated with a water resistant Poly Vinyl Acetate (PVA)
emulsion. This provides cone rigidity and
and
Dual4Ohm
For
This
resistance but low mass voice coil. The former is formed from anodized aluminum.
This
handing
Basket
The
D4
Series Woofers use a new die cast basket for even better alignment.
is aluminum and non-magnetic for better efficiency. In Addition, the
will be much higher than with a stamped steel frame, thus giving a
Pressed
strength allows for high output levels without
Paper
cone
is madeofa paper
Copper
High efficient thermal transfer the voice coil is constructed Copper Voice Coils.
combination consistsofwire coated with copper. The result is a high temperature
makes the voice coil highly efficientindissipating heat thus improving the
capability.
TIONS
Cone
Voice Coils
compound
aluminum
power
that builds high strength and low weight
lower
distortion. This combinationofweight
cone
handling.
break up.
TheQof
lower
The
the
power
Dual
Laminated
The
extreme
spider provides a rigid progressive suspension for the subwoofer, resulting in
bass response and super longexcursion capabilities.
Progressive
High Strength Glass Fiber Enhanced Rubber
Machine
suspension is proven to add mechanical strength and reliability. This also provides
soft light suspension for the woofer, thus increasing efficiency.
injected high strength glass fiber
Dupont
Spider
Surround
enhanced
rubber
surround for the front
and
CALCULATING
First, measure out the area you're interestedinplacing the subwoofer
enclosure. Use a good-quality measuring tape to determine the MAXIMUM
height, width, and depth
is
down, width
measurement back-to-front.
Calculating the correct box size
formulas and calculations. The key to calculating internal box dimensions
basic understanding
ofanobject's dimensions (height, width, depth) by each other.
i
12"
the measurement from side-to side, and depthisthe
of
volume: Cubic volumeisderived by multiplying each
~~-1;:'~
12X12X24=3456
3456
+1728=2.0
ENCLOSURE
of
your area. Heightisthe measurement up-and-
is
easy if you just remember a few simple
For example:Ifyou measure the
internal dimensions
(like a subwoofer box) and its internal
height
12", and then multiply those dimensions
together (12" X 24" X 12"), then you come
up with a volume
Divide this number by 1728
and the total
the box, which in this caseis2.0 cubic feet.
is
12", its widthis24", its depth
is
VOLUME
of
a rectangular object
of
3,456 cubic inches.
(l
the internal cubic volume
cubic foot)
is
a
is
of
Enclosure volumes are never listed in cubic inches, so it is necessary
convert from cubic inches to cubic feet. (A cubic foot is no more than
12"X12"X12"
cubic feet, simply divide the volume
Round to Square Port Conversions:
As the use
time to explain how to convert round ports into square/rectangular ports. For
example:Ifa subwoofer calls for a6"port that is
port size,
Now multiply the 9 x PIE (3.14) and this
opening or 28.26 square inches
If
by the number you calculated to get the combined calculated port area needed.
If
you notice you have just use the areaofa circle formula (Pie x r (squared).
As for how long the square port should be, the length stays the same
round port. The reason
of
the port and the lengthisnot effect by the conversion from round to square
ports.
in
you speaker calls for more than one port, multiply the numberofports
or 1,728 cubic inches.) So, to convert from cubic inches to
in
cubic inches by 1,728.
of
the square port has become even more popular, thisisa good
13"
long, then take
this case it would be3.Multiple this number by itself, so 3x3=9.
is
the total areaofthe square port
of
opening.
is
because the lengthofthe port determines the tuning
to
1/
2
of
the
as
the
2
SUB\NOOFER
PARAMETERS
The Following Parameters are for Optimal Subwoofer Performance.
The Volume Parameters are calculated to include the displacement by the
subwoofer Magnet and Basket.
PARAMETERS
Fo
(Hz)
QMS
OES
OTS
VAS
(Liters)
REVC (Ohms) Parallel
SPL
@ 1
watt/1meter
X-max
LEVC
Minimum sealed (Cubic Feet)
Fill
3dB down point (-3dB Hz)
Maximum sealed (Cubic Feet)
Fill Required
3dB down point (-3dB Hz)
Vented (Cubic Feet)
Vented to (Hz)
3dB down Doint (-3dB Hz)
Port
Port
NumberofPorts
Port
Port
Linear
atlkHz (mH)
ENCLOSURE
Reauired
ENCLOSURE
Diameter
Length
SQUARE
Area
Length (")
peak-peak (mm)
VOLUME'S
SEALED
(%
)
(%)
VOLUME'S
PORTED
(")
(")
PORT
(Sq./in.)
(dB)
INFO
MAI02D4 MA122D4 MA152D4
34.95
3.09
0.41 0.47 0.47
0.36
39.83 90.05 285.62
1.7 1.7 1.7
87.97 89.43
20
1.43 1.39 1.38
0.5
No
67.3 58.0 49.0
0.75 1 1.75
No No No
68.2 55
1.5
50 40
42 38
4
13 14 14.5
2 3 3
25
13
31.09 23.61
3.01 3.04
0.41 0.40
90.89
22 24
0.75
No
2 4.5
3 4
21
14 14.5
1.5
No
47
34
33
37
For more advanced competition information and enclosures,
please visit the MA Audio Technical Support page at:
Model
RMS Power
MAX Power 700W
www.MAAudio.com
Power Handling Capabilities
MAI02D4
MA122D4
350W 400W 400W
800W 800W
3
MA152D4
ENCLOSURE
CONSTRUCTION
Once the chosen the typeofapplication for your subwoofer(s) and the
dimensions
of
the box are calculated, the materials need to be selected.
following is a listofcommon enclosure construction materials:
The
Particle Board: Very inexpensive, however this board tends to
come
apart under the high stressofsubwoofers, andisvery susceptible to water
damage! Not suitable for very large enclosures unless a great deal
of
internal
bracing is added for extra rigidity.
Medium Density Fiber Board
speaker enclosures, fiberboard is extremely rigid, and will not
(MDF):
The best overall material for
come
apart at
even the highest pressure levels.
Plywood (all types): A poor choice for car stereo subwoofer
enclosures, as plywood tends to de-laminate under heat and weather ranges
found in cars. It can also buzz at low frequencies when played at high volume.
The thickness
of
the enclosure. The smallestofenclosures
1/2" material. Average size enclosures (1.0 cu ft to 4.0 cu
Very large enclosures (over 4.0 du
of
material for the enclosure is governed by the overall size
(l.0
cu ft or less) can use 5/8" or
ft) should use 3/4".
ft) should use
1"
material with braces to
prevent enclosure flex.
4
\NIRING
SUB\NOOFERS
COMBINATION
If
using Dual 2 ohm coils the total load would be 4.0 ohm.
If
using Dual 4 ohm coils the total load would be 8.0 ohm.
If
using Dual 6 ohm coils the total load would be 12.0 ohm.
SERIES
T
+
&
PARALLEL
WIRING
+J
-l -+ I +
If
using Dual 2
If
using Dual 4 ohm coils the total load would be 4.0 ohm.
If
using Dual 6 ohm coils the total load would be 6.0 ohm.
ohJ
coils the total load would be 2.0 ohm.
+J
-ll.-----<I
If
using Dual 2 ohm coils the total load would be 1.33 ohm.
If
using Dual 4 ohm coils the total load would be 2.67 ohm.
If
using Dual 6 ohm coils the total load would be 4.00 ohm.
T
J
+ + 1-
•
-l~~
If
If
If
+
using Dual 2 ohm coils the total load would be 1.0 ohm.
using Dual 4 ohm coils the total load would be 2.0 ohm.
using Dual 6 ohm coils the total load would be 3.0 ohm.
7+
I
+
I + T
T
+
I +
+
~
5
WIRING
SUBWOOFERS
CONTINUED
...
PARALLEL
+-
- -
If
using Dual 2 ohm coils the total load would be 1.0 ohm.
If
using Dual 4 ohm coils the total load would be 2.0 ohm.
If
using Dual 6 ohm coils the total load would be 3.0 ohm.
+
+
If
using Dual 2 ohm coils the total load would be 0.5 ohm.
If
using Dual 4 ohm coils the total load would be 1.0 ohm.
If
using Dual 6 ohm coils the total load would be 1.5 ohm.
1
WIRING
+-
+
+
+
If
using Dual 2 ohm coils the total load would be 0.33 ohm.
If
using Dual 4 ohm coils the total load would be 0.67ohm.
If
using Dual 6 ohm coils the total load would be 1.00 ohm.
+ +
+
+
If
using Dual 2 ohm coils the total load would be 0.25 ohm.
If
using Dual 4 ohm coils the total load would be 0.50 ohm.
If
using Dual 6 ohm coils the total load would be 0.75 ohm.
+
6
TROUBLE
SYMPTOM
No Sound.
SHOOTING
CHECK
CHECK
CHECK
CHECK
POINT
Is
the Amplifier power LED illuminated?
CURE
I.
Check fuses in amplifier.
2.
Be sure Turn-on lead is connected.
3.
Check signal leads.
4. Check gain control.
5. Check TunerlDeck volume level.
6.
Clean contacts on fuse holders.
POINT
Is
the Amplifier Overload LED illuminated?
CURE
Check for speaker short or amplifier overheating.
POINT
Check subwoofer impedances with Ohm-meter.
CURE
If
no reading, replace subwoofer.
POINT
Check that subwoofer moves freely by pushing gently down on center.
SYMPTOM
CURE
If
subwoofer will not move, replace subwoofer.
Subwoofer is making "Rattling" Noise.
CHECK
POINT
Check that Subwoofer is secured properly with screws.
CURE
Tighten Mounting Screws.
CHECK
POINT
Check Speaker Box Construction.
CURE
Check that enclosure is debris free.
CHECK
POINT
Check Speaker polarity.
CURE
Correct Polarity.
7
TROUBLE
SYMPTOM
If
Using a Dual Voice Coil Subwoofer, There Is No Sound in One Voice Coil
SHOOTING
CONTINUED
...
SYMPTOM
CHECK
POINT
Check Speaker Leads.
CURE
Inspect for short circuit.
Check for open Connection.
CURE
Reverse Left and Right speaker leads to determine if it is
occurring before the subwoofer.
Speaker is Distorting at High Levels.
CHECK
POINT
Check Speaker load impedance capabilities for Amplifier.
CURE
Inspect that speaker load impedance recommendations are
followed. Check wiring configuration for speakers.(To Verify
an
of
the amplifier.
CHECK
proper load impedance, use
load for each channel
POINT
Verify that Amplifier or Crossover settings are correct.
OHM meter to measure the total
CURE
Select Low Pass Amp/Crossover setting
??Need More Technical Support??
PLEASE
WWW.MAAUDIO.COM
VISIT
8
•
LENGTH
OF
LIMITED
WARRANTY
WARRANTY
1 year on Video Products
2 years on Electronic Products
2 years on Speakers and Subwoofers
•
WHAT
IS
COVERED
Warranty applies only to MA Audio products sold to consumers by Authorized MA Audio
in
Dealers
from Authorized
the United StatesofAmerica or its possessions. Products purchased by consumers
MA
Audio Dealer outsideofthe USA are covered only by that country's
distributor.
•
WHO
IS
COVERED
This warranty covers only the original purchaserofMA Audio product purchased from an
MA
Authorized
to
http://www.MAAudio.com. In order to receive service, the purchaser must provide
go
Audio with a copyofthe receipt stating the customer name,
product purchased and date
Audio Dealer in the United States. For a listofAuthorized Internet Retail Stores,
MA
Audio Authorized dealer name,
of
purchase. Products found to be defective during the warranty
period will be repaired or replaced (with a product deemed to be equivalent) at MA Audio's
discretion.
•
WHAT
1.
Damage caused by accident, abuse, improper operations, water,or theft.
2.
Any cost or expense related to the removal or reinstallationofproduct.
3.
Repair Service performed by anyone other than MA Audio's Repair Department.
IS
NOT
COVERED
4. Any product which has had the serial number defaced, altered, or removed.
5. Any product purchased outside the United States.
6.
Any product not purchased from an Authorized MA Audio Dealer.
MA
•
LIMIT
ON
IMPLIED
WARRANTIES
Any implied warranties including warrantiesoffitness for use and merchantability are limited in
duration to the period
limitations on the length
authorized to assume for MA Audio any other liability in connection with the sale
•
HOW
TO
1.
Please call (310) 223-0400 for MA Audio Customer Service.
Customer Service
2.
Obtain a RA # (Return Authorization Number) from Customer Service.
0
of
the express warranty set forth above. Some states do not allow
of
an implied warranty, so this limitation may not apply. No person is
STAIN
SERVICE
hours:
Monday-Friday, 8am-5pm Pacific Standard Time.
of
the product.
3. Obtain a "Cashiers Check" or "Money Order" for $15.00 per item for return postage.
(No personal Checks will be accepted)
4. Once you receive your return authorization number from our Warranty Department,
of
please print this number LARGE on the outside
the packaging.
5. No products will be accepted without a Return Authorization number.
6.
Please include the following items with the returned product:
a.
Copyofthe Original Receiptofpurchase (Required)
b.
Cashiers Check or Money Order for $15.00per item
c. Return Address for shipment.
7.
Ship to:
MAAudio
Warranty Department
18601 South Susana Road
Rancho Dominguez, CA 90221
RA#: _
9
WARNING
Investigate the layoutofyour automobile thoroughly before drilling or cutting any
holes. Use extreme care when you work near the gas tanks, gas or hydraulic lines,
and electrical wiring. Always make sure the Subwoofer(s)
Mounting the subwoofer securely to the automobile will prevent damage to the car
or injury to a person, particularly in the event
of
an accident.
Don't mount the system so that the wire connections are unprotected or are subject
to pinching or damage from nearby objects.
Any
+12 VDC power wire must be fused at the battery positive tenninal
connection. Before making or breaking power connections at the system power
terminals, disconnect the
other equipment
is
turned off while connecting the input RCA jacks and speaker
+12V wire at the battery. Confirm your head unit and/or
tenninals.
If
you need to replace any fuses, replace it only with a fuse identical to that
supplied with the system. Using a fuseofdifferent type or rating may result in
damage to this system which isn't covered by the warranty.
is
securely mounted.
10
· Fold and Tear
audio.
18601
Rancho
S.
Here·
Susana Road
Dominguez,
.
1st
Class
Postage
CA • 90221
L I
M I T E D w A R R A N T
www.maaudio.com
y
LengthofWarranty - 1 yearonVideo Products- 2 yearsonElectronic Products - 2yearsonSpeakers
to
MA
This
Warranty applies only
Audio products sold
consumers by authorized
Audio
MA
United StatesofAmerica or
its possessions. Products
purchasedbyconsumers
from
dealer outside
covered
country's distributor.
dealers in
authorized MA Audio
onlybythat
HOW
TO
OBTAIN
1.
Please
call
Monday-Friday, 8am-5pm Pacific Standard Time
2.
Obtain a
Customer Service
3.
Obtain a'Cashiers Check" or "Money Order"for$15.00 per
item for return postage(no personal checks will
4.
Once you received yourreturn authorization numberfrom our
Warranty Department, please print this number
outside
to
the
of
the
USA
are
SERVICE
(310)
223-0400, Customer Service hours:
RA
# (Return Authorization Number) from
of
the package.
warranty covers only
the original purchaser
Audio
Inc.
product purchased
an
authOrized MAAudio
from
dealer in the UnitedStates.
For
alistofauthorized Internet
retail stores go
http://www.rnaaudio.com.
In
ordertoreceive service, the
purchaser must provide MA
Audio withacopy
stating thecustomer name,
MA Audioauthorized dealer
name, productpurchased and
dat~;
of
to be defective during the
warral,ty period will be repaired
or replaced (witha product
deemed to be eqUivalent!at MA
Audio's discretion.
to
of
the receipt
purchase. Products found
be
LARGE
of
MA
accepted).
on the
and
Subwoofers
Any
implied
1> Damage caused by accident.
abuse, improperoperations,
wilteror theft.
2> Any cost
to
ationofproduct.
3> Repair service
by
Audio's repair
4> Any
the serial
alter~'Ci
5> Any
outside
6> Any
from
Audio dealer.
5.Noproducts willbeaccepted without a Return Authorization number
6.
Please
7.
Ship to:MAAudio
8.
Keep
or
the removal or reinstall-
anyone
a.
Copyofthe Original Receiptofpurchase (required)
b.
c.
Return Address forshipment
expense related
performed
other
than
MA
department.
product
which
number
or
removed.
product
the
product
an authorized MA
include the following items with the returned product:
Cashiers
Warranty Department
186015.Susana
Rancho Dominguez,CA90221
arecordofthe
has had
defilced,
purchased
USA.
not
purchased
Check or Money Order for $15.00 per item
RA
#:.
RA#
warrantiesoffitness for use and
merchantability
durationtothe periodofthe
express
Some states
limitationsonthe
implied
limitation
person
for MA
in
connection
the
Road
for any follow-up.
warranties
warranty
do
warranty,sothis
may
is
authorizedtoassume
Audio
any
product.
with
_
are
limited
set
forth
not
allow
lengthofan
not
apply. No
other
the sale
including
in
above.
liability
of
..
This registration must be filled
Name
."--..
Street
City
E-Mail Address
Model Number
Place
Purchased
If replacement, what
Name
Model
~
"--
Purchased
For·
"'--
Number"--
,,~
,,'------
."'--------
(Circle One) Gift Replacement Competition
------------
is
the
name and model
._..__._..
__
..
out
and mailed
_
numberofthe
~
Fold
and
Tear
Here·························
within10daysofpurchasetovalidate warranty.
State
"----,
Date Purchased
UseToCause Mayhem
system replaced?
Zip
~
-------~
.
-.
-,
,
-,
Why did you purchase MA Audio equipment? (Circle One) Style Sound Price Dealer Recommendation
Other
"'-
Additional Comments
.""
~
. ,
Dear
Customer,
Thank
you
entertainment
the
MR
to
deSign and
Rudlo
bring
has
you
enjoyment.
RddltlOnally,
bring
think
will
Please
card,
you
about
agam
take
this
the
select
will
aduancements
customers.
products
to
for
selecting
needs.
manufacturing
committed
products
we
are
confident
satisfaction
purchasing
a
MR
8 moment
enable
and
This
meet
proulde
information
your
MR
many
more
RudlO
to
complete
us
needs.
MR
Rudlo
of
years
that
of
mobile
product.
to
us
will
RudiO
has
mobile
will
that
great
the
keep
a
also
for
many
your
years
entertainment
of
research
perform
your
choice
sounds
entertainment
enclosed
you
better
adulsed
understanding
be
used
high
of
experience
and
for
so
of
that
your
MR
products
customer
on
to
end
mobile
products.
development
musical
Rudlo
when
will
you
you
suruey
our
deuelop
latest
of
new
our
In
We
appreciate
a
MR
Rudlo
the
product
confidence.
confidence
and
we
demonstrated
shall
do
all
we
by
your
can
purchase
to
uphold
Sincerely,
Supreme
MR
Rudlo Inc.
www.ma8udIO.com
of
that
Rulers
186DlS.Susana
Road
• Rancho Dominguez •
CA•90221
MR
Rudio
Suruey Card
www.maaudIO.com
1
st
Class
Postage
ModeIPurchased
Date
Purchased
Purchased
Name
CltV
State
E-Mail Address
From
""
""~-------------------,
""~
o Please send
Whichofthe
DUB
Magazine Hot
Truckln
this
~es,
vour
which
Is
If
following
Car Audio I; Elec
first
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Information
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AudIO
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purchase?
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Audio I; Sound Mobile
""'
Yes
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"'-~
Circle
or
products
an~.
No
--,
---.
__,
___,
-,
and up coming
l11.a. audio®
18601
Rancho Dominguez
Electronics
S.
Susana Road
90221
euents.
CA
-,
___.
What
brands
What
factors
Ouallt~
Your
MA
Was
~our
Your
Age
did
~ou
consider
Influenced
Power Handling Appearance
Audio equipment was
MA
Audio
.........~__
purchase
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~our
purchase?
Installed
an
Gender M
before
purchasing
upgrade
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for
or
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F
or
Audio?
or
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""-
Friend
Professional
car
stereo?
Fauorlte
--,
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Installer
Yes
or
No
MusIc Type
""-
---.
APPLICATION INSTRUCTIONS
1. Lay SIGN flat, tape side down.
from tape and
Liner
letters
~
at 180
degree
Direction
of Pull
Letters
Pull
Liner
angle.
2.
Roll
position
3.
4.
After
180
degree
Reroll
adhesion.
or
press
on
window.
tape
application,
angle. \\
or
squeegee
Tape
and
pull
letters
letters
\
tape
trom
forpositive
firmly
letters
into
at
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