Ma Audio MA 102D4 User manual
Dear Customer,
Congratulations on your purchase
of
the world's finest brand
of
car audio.
At MA Audio we are committed to producing musical reproduction at its best,
and we are pleased you chose our product. Through years
of
critical testing
procedures and hand craftsmanship, we have created awide range
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 MAAudio Dealer. Please read
your warranty and retain your receipt and original carton for possible
future use.
To
learn more about
MA
Audio, current world records held by Ma Audio and
other information, please visit
us
on the world wide web at:
www.MAAudio.com
!!
Attention!!
Continuous, excessive exposure to sound pressure levels in excess
of
85
dB
can cause aloss in hearing. While MA Audio sound systems are capable
of
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
TABLE
OF'
CONTENTS
FEATURES &SPECIFICATIONS 1
CALCULATING ENCLOSURE VOLUME 2
SUBWOOFER PARAMETERS 3
ENCLOSURE CONSTRUCTION 4
SUBWOOFER WIRING DIAGRAMS 5
TROUBLESHOOTING 7
WARRANTY 9
WARNING
10
FEATURES
•
Glafibe
™
High
Strength
Glass
Fiber
Enhanced
Surround
•
Rubber
Surround
Double
Stitching
to
Guarantee
Longevity
•
Rigid
Non-Pressed
Heavy
Duty
Cone
•
Coilvent
™
T-Yoke
to
Keep
Voice Coil Always
Running
Cool
at
High
Power
•
Patented
Thermo-Cooling
Motor
Structure
•
Ultra
Strong
Polypropylene
Dust
Cap
•New
Patented
Die-Cast
Basket
•
Hi-Temp
Kapton
Voice
Coil
Former
•
Double
Stacked
Strontium
Magnets
•
Dual
Progressive
Dupont
Spiders
•
Platinum
Plated
Block
Terminals
•
Rubber
Sealant
Gasket
•
Dual
4-0hm
Voice Coil
SPECIFICA
TIONS
Die-Cast
Basket
The
D4
Series Woofers use anew die cast basket for even better alignment.
The
basket
is aluminum and non-magnetic for better efficiency. In Addition, the
aluminum
dissipates heat far better than steel which allows more
power
handling.
The
Q
of
the
speaker
will be much higher than with astamped steel frame, thus giving a
lower
resonate frequency.
Non
Pressed
Paper
Cone
The
cone
is made
of
apaper
compound
that builds high strength and low weight
combination. It also has been treated with awater resistant Poly Vinyl Acetate (PVA)
emulsion. This provides cone rigidity and
lower
distortion. This combination
of
weight
and
strength allows for high output levels without
cone
break up.
Dual
4
Ohm
Copper
Voice Coils
For
High efficient thermal transfer the voice coil is constructed Copper Voice Coils.
This
combination consists
of
wire coated with copper. The result is ahigh temperature
resistance but low mass voice coil. The former is formed from anodized aluminum.
This
makes the voice coil highly efficient
in
dissipating heat thus improving the
power
handing
capability.
Dual
Laminated
Progressive
Dupont
Spider
The
spider provides arigid progressive suspension for the subwoofer, resulting in
extreme
bass response and super longexcursion capabilities.
High Strength Glass Fiber Enhanced Rubber
Surround
Machine
injected high strength glass fiber
enhanced
rubber
surround for the front
suspension is proven to add mechanical strength and reliability. This also provides
and
soft light suspension for the woofer, thus increasing efficiency.
CALCULATING
ENCLOSURE
VOLUME
First, measure out the area you're interested
in
placing the subwoofer
enclosure. Use agood-quality measuring tape to determine the MAXIMUM
height, width, and depth
of
your area. Height
is
the measurement up-and-
down, width
is
the measurement from side-to side, and depth
is
the
measurement back-to-front.
Calculating the correct box size
is
easy if you just remember afew simple
formulas and calculations. The key to calculating internal box dimensions
is
a
basic understanding
of
volume: Cubic volume
is
derived by multiplying each
of
an
object's dimensions (height, width, depth) by each other.
i12"
~~-1;:'~
12X12X24=3456
3456
+1728=2.0
For example:
If
you measure the
internal dimensions
of
arectangular object
(like asubwoofer box) and its internal
height
is
12", its width
is
24", its depth
is
12", and then multiply those dimensions
together (12" X24" X12"), then you come
up with avolume
of
3,456 cubic inches.
Divide this number by 1728
(l
cubic foot)
and the total
is
the internal cubic volume
of
the box, which in this case
is
2.0 cubic feet.
Enclosure volumes are never listed in cubic inches, so it is necessary
to
convert from cubic inches to cubic feet. (A cubic foot is no more than
12"
X
12"
X
12"
or 1,728 cubic inches.) So, to convert from cubic inches to
cubic feet, simply divide the volume
in
cubic inches by 1,728.
Round to Square Port Conversions:
As the use
of
the square port has become even more popular, this
is
agood
time to explain how to convert round ports into square/rectangular ports. For
example:
If
asubwoofer calls for a
6"
port that is
13"
long, then take
1/
2
of
the
port size,
in
this case it would be
3.
Multiple this number by itself, so 3x3=9.
Now multiply the 9 x PIE (3.14) and this
is
the total area
of
the square port
opening or 28.26 square inches
of
opening.
If
you speaker calls for more than one port, multiply the number
of
ports
by the number you calculated to get the combined calculated port area needed.
If
you notice you have just use the area
of
acircle formula (Pie x r (squared).
As for how long the square port should be, the length stays the same
as
the
round port. The reason
is
because the length
of
the port determines the tuning
of
the port and the length
is
not effect by the conversion from round to square
ports.
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
MAI02D4 MA122D4 MA152D4
Fo
(Hz) 34.95 31.09 23.61
QMS 3.09 3.01 3.04
OES 0.41 0.47 0.47
OTS 0.36 0.41 0.40
VAS
(Liters) 39.83 90.05 285.62
REVC (Ohms) Parallel 1.7 1.7 1.7
SPL
@1
watt
/1
meter
(dB) 87.97 89.43 90.89
X-max
Linear
peak-peak (mm) 20 22 24
LEVC
at
lk
Hz (mH) 1.43 1.39 1.38
ENCLOSURE
VOLUME'S
SEALED
Minimum sealed (Cubic Feet) 0.5 0.75 1.5
Fill
Reauired
(%
)No No
No
3dB down point (-3dB Hz) 67.3 58.0 49.0
Maximum sealed (Cubic Feet) 0.75 11.75
Fill Required
(%)
No No No
3dB down point (-3dB Hz) 68.2 55
47
ENCLOSURE
VOLUME'S
PORTED
Vented (Cubic Feet) 1.5 24.5
Vented to (Hz) 50 40 34
3dB down Doint (-3dB Hz) 42 38 33
Port
Diameter
(")
43 4
Port
Length
(")
13 14 14.5
Number
of
Ports
2 3 3
SQUARE
PORT
INFO
Port
Area
(Sq./in.)
25
21
37
Port
Length (")
13
14 14.5
For more advanced competition information and enclosures,
please visit the MA Audio Technical Support page at:
www.MAAudio.com
Power Handling Capabilities
Model MAI02D4 MA122D4 MA152D4
RMS Power 350W 400W 400W
MAX Power 700W 800W 800W
3
ENCLOSURE
CONSTRUCTION
Once the chosen the type
of
application for your subwoofer(s) and the
dimensions
of
the box are calculated, the materials need to be selected.
The
following is alist
of
common enclosure construction materials:
Particle Board: Very inexpensive, however this board tends to
come
apart under the high stress
of
subwoofers, and
is
very susceptible to water
damage! Not suitable for very large enclosures unless agreat deal
of
internal
bracing is added for extra rigidity.
Medium Density Fiber Board
(MDF):
The best overall material for
speaker enclosures, fiberboard is extremely rigid, and will not
come
apart at
even the highest pressure levels.
Plywood (all types): Apoor 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
material for the enclosure is governed by the overall size
of
the enclosure. The smallest
of
enclosures
(l.0
cu ft or less) can use 5/8" or
1/2" material. Average size enclosures (1.0 cu ft to 4.0 cu ft) should use 3/4".
Very large enclosures (over 4.0 du ft) should use
1"
material with braces to
prevent enclosure flex.
4
\NIRING
SUB\NOOFERS
COMBINATION
SERIES
&
PARALLEL
WIRING
If
using Dual 2ohm coils the total load would be 4.0 ohm.
If
using Dual 4ohm coils the total load would be 8.0 ohm.
If
using Dual 6ohm coils the total load would be 12.0 ohm.
T
+
+J
-l -+I+
If
using Dual 2
ohJ
coils the total load would be 2.0 ohm.
If
using Dual 4ohm coils the total load would be 4.0 ohm.
If
using Dual 6ohm coils the total load would be 6.0 ohm.
I
+
+J
-ll.-----<I
I+T
If
using Dual 2ohm coils the total load would be 1.33 ohm.
If
using Dual 4ohm coils the total load would be 2.67 ohm.
If
using Dual 6ohm coils the total load would be 4.00 ohm.
+
T
+
JT
+ + 1-
•
-l~~
+
7+
I+
~
If
using Dual 2ohm coils the total load would be 1.0 ohm.
If
using Dual 4ohm coils the total load would be 2.0 ohm.
If
using Dual 6ohm coils the total load would be 3.0 ohm.
5
WIRING
SUBWOOFERS
CONTINUED
...
PARALLEL
WIRING
+-
--
1
+-
If
using Dual 2ohm coils the total load would be 1.0 ohm.
If
using Dual 4ohm coils the total load would be 2.0 ohm.
If
using Dual 6ohm coils the total load would be 3.0 ohm.
+
++
If
using Dual 2ohm coils the total load would be 0.5 ohm.
If
using Dual 4ohm coils the total load would be 1.0 ohm.
If
using Dual 6ohm coils the total load would be 1.5 ohm.
+
++ +
If
using Dual 2ohm coils the total load would be 0.33 ohm.
If
using Dual 4ohm coils the total load would be 0.67ohm.
If
using Dual 6ohm coils the total load would be 1.00 ohm.
+
++
If
using Dual 2ohm coils the total load would be 0.25 ohm.
If
using Dual 4ohm coils the total load would be 0.50 ohm.
If
using Dual 6ohm coils the total load would be 0.75 ohm.
6
TROUBLE
SHOOTING
SYMPTOM
No Sound.
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.
CHECK
POINT
Is
the Amplifier Overload LED illuminated?
CURE
Check for speaker short or amplifier overheating.
CHECK
POINT
Check subwoofer impedances with Ohm-meter.
CURE
If
no reading, replace subwoofer.
CHECK
POINT
Check that subwoofer moves freely by pushing gently down on center.
CURE
If
subwoofer will not move, replace subwoofer.
SYMPTOM
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
SHOOTING
CONTINUED
...
SYMPTOM
If
Using aDual Voice Coil Subwoofer, There Is No Sound in One Voice Coil
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.
SYMPTOM
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
proper load impedance, use
an
OHM meter to measure the total
load for each channel
of
the amplifier.
CHECK
POINT
Verify that Amplifier or Crossover settings are correct.
CURE
Select Low Pass Amp/Crossover setting
??Need More Technical Support??
PLEASE
VISIT
WWW.MAAUDIO.COM
8
LIMITED
WARRANTY
•
LENGTH
OF
WARRANTY
1year on Video Products
2years on Electronic Products
2years on Speakers and Subwoofers
•
WHAT
IS
COVERED
Warranty applies only to MA Audio products sold to consumers by Authorized MA Audio
Dealers
in
the United States
of
America or its possessions. Products purchased by consumers
from Authorized
MA
Audio Dealer outside
of
the USA are covered only by that country's
distributor.
•
WHO
IS
COVERED
This warranty covers only the original purchaser
of
MA Audio product purchased from an
Authorized
MA
Audio Dealer in the United States. For alist
of
Authorized Internet Retail Stores,
go
to
http://www.MAAudio.com. In order to receive service, the purchaser must provide
MA
Audio with acopy
of
the receipt stating the customer name,
MA
Audio Authorized dealer name,
product purchased and date
of
purchase. Products found to be defective during the warranty
period will be repaired or replaced (with aproduct deemed to be equivalent) at MA Audio's
discretion.
•
WHAT
IS
NOT
COVERED
1.
Damage caused by accident, abuse, improper operations, water,or theft.
2.
Any cost or expense related to the removal or reinstallation
of
product.
3.
Repair Service performed by anyone other than MA Audio's Repair Department.
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.
•
LIMIT
ON
IMPLIED
WARRANTIES
Any implied warranties including warranties
of
fitness for use and merchantability are limited in
duration to the period
of
the express warranty set forth above. Some states do not allow
limitations on the length
of
an implied warranty, so this limitation may not apply. No person is
authorized to assume for MA Audio any other liability in connection with the sale
of
the product.
•
HOW
TO
0
STAIN
SERVICE
1.
Please call (310) 223-0400 for MA Audio Customer Service.
Customer Service
hours:
Monday-Friday, 8am-5pm Pacific Standard Time.
2.
Obtain aRA #(Return Authorization Number) from Customer Service.
3. Obtain a"Cashiers Check" or "Money Order" for $15.00per item for return postage.
(No personal Checks will be accepted)
4. Once you receive your return authorization number from our Warranty Department,
please print this number LARGE on the outside
of
the packaging.
5. No products will be accepted without aReturn Authorization number.
6.
Please include the following items with the returned product:
a.
Copy
of
the Original Receipt
of
purchase (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 layout
of
your 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)
is
securely mounted.
Mounting the subwoofer securely to the automobile will prevent damage to the car
or injury to aperson, 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 +12V wire at the battery. Confirm your head unit and/or
other equipment
is
turned off while connecting the input RCA jacks and speaker
tenninals.
If
you need to replace any fuses, replace it only with afuse identical to that
supplied with the system. Using afuse
of
different type or rating may result in
damage to this system which isn't covered by the warranty.
10
·Fold and Tear
Here·
.
1st
Class
Postage
audio.
18601
S.
Susana Road
Rancho
Dominguez,
CA •90221
LIMITEDwAR R ANTy
www.maaudio.com
Length
of
Warranty - 1 year
on
Video Products - 2 years
on
Electronic Products - 2 years
on
Speakers
and
Subwoofers
Warranty applies only
to
MA
Audio products sold
to
consumers by authorized
MA
Audio
dealers in
the
United States
of
America or
its possessions. Products
purchased
by
consumers
from
authorized MA Audio
dealer outside
of
the
USA
are
covered
only
by
that
country's distributor.
This
warranty covers only
the original purchaser
of
MA
Audio
Inc.
product purchased
from
an
authOrized MA Audio
dealer in the United States.
For
alist
of
authorized Internet
retail stores go
to
http://www.rnaaudio.com.
In
order
to
receive service, the
purchaser mustprovide MA
Audio with acopy
of
the receipt
stating the customer name,
MA Audio authorized dealer
name, product purchased and
dat~;
of
purchase. Products found
to be defective during the
warral,ty period will be repaired
or replaced (with aproduct
deemed to be eqUivalent! at MA
Audio's discretion.
1> Damage caused by accident.
abuse, improperoperations,
wilteror theft.
2> Any cost
or
expense related
to
the removal or reinstall-
ation
of
product.
3> Repair service
performed
by
anyone
other
than
MA
Audio's repair
department.
4> Any
product
which
has had
the serial
number
defilced,
alter~'Ci
or
removed.
5> Any
product
purchased
outside
the
USA.
6> Any
product
not
purchased
from
an authorized MA
Audio dealer.
Any
implied
warranties
including
warranties
of
fitness for use and
merchantability
are
limited
in
duration
to
the period
of
the
express
warranty
set
forth
above.
Some states
do
not
allow
limitations
on
the
length
of
an
implied
warranty,
so
this
limitation
may
not
apply. No
person
is
authorized
to
assume
for MA
Audio
any
other
liability
in
connection
with
the sale
of
the
product.
HOW
TO
OBTAIN
SERVICE
1.
Please
call
(310)
223-0400, Customer Service hours:
Monday-Friday, 8am-5pm Pacific Standard Time
2.
Obtain a
RA
#(Return Authorization Number) from
Customer Service
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 received your return authorization number from our
Warranty Department, please print this number
LARGE
on the
outside
of
the package.
5.
No
products will
be
accepted without aReturn Authorization number
6.
Please
include the following items with the returned product:
a.
Copy
of
the Original Receipt
of
purchase (required)
b.
Cashiers
Check or Money Order for $15.00 per item
c.
Return Address for shipment
7.
Ship to:
MA
Audio
RA
#:.
_
Warranty Department
18601
5.
Susana
Road
Rancho Dominguez,
CA
90221
8.
Keep
arecord
of
the
RA#
for any follow-up.
..
..
Fold
and
Tear
Here·························
.
This registration must be filled
out
and mailed
within
10
days
of
purchase
to
validate warranty.
Name
."--..
Street
~
City
"--
E-Mail Address
,,~
------------
State
"----,
Zip
~
-.
-------~
Model Number
,,'------
_
Place
Purchased
."'--------
Date Purchased
-,
Purchased
For·
(Circle One) Gift Replacement Competition
Use
To
Cause Mayhem
If replacement, what
is
the
name and model
number
of
the
system replaced?
Name
"'--
._
..
__
._
..
~
,
Model
Number"--
__
-,
Why did you purchase MA Audio equipment? (Circle One) Style Sound Price Dealer Recommendation
Other
"'-
~
Additional Comments
.""
. ,
Dear
Customer,
Thank
you
for
selecting
MR
RudiO
for
your
high
end
mobile
entertainment
needs.
MR
Rudlo
has
many
years
of
experience
In
the
deSign and
manufacturing
of
mobile
entertainment
products.
MR
Rudlo
has
committed
many
years
of
research
and
development
to
bring
you
products
that
will
perform
for
your
musical
enjoyment.
RddltlOnally,
we
are
confident
that
your
choice
of
MR
Rudlo
will
bring
you
the
satisfaction
of
great
sounds
so
that
when
you
think
about
purchasing
more
mobile
entertainment
products
you
will
agam
select
a
MR
RudlO
product.
Please
take
8moment
to
complete
the
enclosed
customer
suruey
card,
this
will
enable
us
to
keep
you
adulsed
on
our
latest
aduancements
and
proulde
us
a
better
understanding
of
our
customers.
This
information
will
also
be
used
to
deuelop
new
products
to
meet
your
needs.
We
appreciate
the
confidence
demonstrated
by
your
purchase
of
a
MR
Rudlo
product
and
we
shall
do
all
we
can
to
uphold
that
confidence.
Sincerely,
Supreme
Rulers
MR
Rudlo Inc.
www.ma8udIO.com
186Dl
S.
Susana
Road
•Rancho Dominguez •
CA
•
90221
MR
Rudio
Suruey Card www.maaudIO.com 1
st
Class
Postage
ModeI
Pu
rchased
,,\.-
-,
Date
Purchased
,,\...
--, l11.a. audio®
18601
S.
Susana Road
Rancho Dominguez
CA
90221
Name
""
---.
CltV
""~-------------------,
State
""~
__,
E-Mail Address
,,~
___,
oPlease send
me
Information
on
newl~
released
products
and up coming
euents.
Purchased
From
Which
of
the
following
magazines do
~ou
read?
Circle
an~.
DUB
Magazine Hot
Rod
Performance
Audio I; Sound Mobile
Electronics
Truckln
Car Audio I; Elec
Other
Mags
""'
-,
Is
this
vour
first
MA
AudIO
purchase?
Yes
or
No
If
~es,
which
brands
do
~ou
normall~
bu~?
"'-~
___.
What
brands
did
~ou
consider
before
purchasing
MA
Audio?
""-
--,
What
factors
Influenced
~our
purchase?
Ouallt~
Power Handling Appearance
Reputation
Friend
Othe~,-------_
Your
MA
Audio equipment was
Installed
b~?
Yourself
or
Professional
Installer
Was
~our
MA
Audio
purchase
an
upgrade
for
vour
eXisting
car
stereo?
Yes
or
No
Your
Age
.........
~
__
-.J
Gender M
or
F
or
Other
Fauorlte
MusIc Type
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This manual suits for next models
2
Table of contents
