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ALPHASONIK
Owner's Manual
Alpha 300 Series
Subwoofers
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PSW310X / PSW312X
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Introduction.................................................................................3
Features and Specifications.......................................................4
Building an Enclosure.............................................................5-9
Subwoofer Parameters.............................................................10
Wiring Diagrams..................................................................11-13
Troubleshooting........................................................................14
Warning / Disclaimer.................................................................15
Warranty............................................................................16 - 17
Notes........................................................................................18
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Thank you for purchasing this Alphasonik product. Alpha-
sonik products are specifically engineered and designed for the mobile
audio environment. This manual contains important information about
installation, set-up procedures and integrating your new Alphasonik
product into your vehicle. With proper care and installation, your new
product will provide you with many years of high performance listening
enjoyment. We recommend having an Authorized Alphasonik Dealer
install your new product for optimal performance and to take advantage
of our warranty program. Before installing your new product, please
read through the manual to fully understand the application.
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Before making any electrical connections, make sure that
you disconnect the battery’s ground cable to prevent the possibility of
short circuits or damage to your electronic equipment. If your vehicle’s
stereo (head unit) comes with an Anti-theft code, DO NOT disconnect
the battery. If you have the access code for the stereo (head unit),
please refer to the vehicle’s owner’s manual.
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ALUMINUM CONE
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The spun aluminum cone provides outstanding con rigidity and lowers distortion. Ad-
dtionally, the combination of strengh and weight allows for higher output levels without
cone break up.
DUAL 4-OHM COPPER VOICE COILS W/ BLACK ANODIZED FORMERS
For high efficient thermal transfer, the voice coil is constructed with a black voice coil
formed from anodized aluminum wound with 99.9% oxygen free copper. This makes
the voice coil highly efficient in dissipating heat while improving power handling capa-
bility.
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DUAL LAMINATED COTTON SPIDER (DAMPER)
The spider provides a rigid progressive suspension for the woofer cone resulting in
better bass response and excursion capabilities.
HIGH STRENGTH GLASS FIBER ENHANCED SURROUND
Machine injected high strengh glass fiber enhanced rubber surround for the top sus-
pension adds mechanical strength and reliability. This also provides a softer lighter
suspension increasing effciency.
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PSW310X
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10” ALPHA 300 SERIES SUBWOOFER
Low profile design, mounting depth 3.5 inches
Dual 4-ohm voice coils
High strength glass fiber enhanced surround
Spun aluminum inverted cone
Coil vent t-yoke
Power coated dual terminal blocks
Strontium magnet structure
Copper wound voice coil
Plastic sealant gasket
Bumped t-yoke
Rated at 400 watts RMS 800 watts max power
Frequency Responseof 28Hz - 500Hz
89.7dB efficiency
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PSW312X
12” ALPHA 300 SERIES SUBWOOFER
Low profile design, mounting depth 3.5 inches
Dual 4-ohm voice coils
High strength glass fiber enhanced surround
Spun aluminum inverted cone
Coil vent t-yoke
Power coated dual terminal blocks
Strontium magnet structure
Copper wound voice coil
Plastic sealant gasket
Bumped t-yoke
Rated at 500 watts RMS 1000 watts max power
Frequency Responseof 24Hz - 500Hz
89.2dB efficiency
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Now that you know about subwoofer specifications it’s time to learn about build-
ing subwoofer boxes. If you’ve done any woodworking you shouldn’t have much
trouble when building a subwoofer enclosure. One of the main differences will
probably be the material used in building subwoofer boxes as compared to
other woodworking projects. When building a custom subwoofer box you will
want to use minimal MDF (medium density fiberboard).
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TOOLS REQUIRED TO BUILD AN ENCLOSURE
Safety goggles
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Table saw or circular saw
Powered screw gun
Router or jig saw
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Variety of sizes of drill bits
Wood glue
Silicone
Wood screws
To ensure your safety while building an enclosure, please read all manuals for
the power tools you will be using, as they will include valuable information on
handling the tools and safety tips.
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If you’re planning to build your own enclosure and are confused
in what type of enclosure best suits your needs this page will help you
choose what enclosure fits your needs. There are many different types of
enclosures. The two most common used enclosures are sealed and vented
enclosure. This page will show the advantages and disadvantages of the
two enclosures.
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Advantages of a sealed enclosures
*High power handing capability
*Great transient response
*Tolerant of minor enclosure size variation
*Easy to construct
*Smooth rolloff (12dB/octave)
Disadvantages of a sealed enclosures
*Requires a woofer with a long excursion for better low bass frequency
response.
*Can have lower sensitivity than ported enclosures.
*When using high power and small enclosures, the woofer is not in an ideal
cooling environment.
*Less low bass as compared to a properly tuned vented enclosure above
the ported tuning frequency.
Advantages of a vented enclosure
*Increased output around vented tuning
*Higher power handling above the port tuning frequency
*Extended frequency response
*Magnet is in a good cooling environment
*Handles higher bass frequencies with less distortion
Disadvantages of a vented enclosure
*Vented enclosure transient response is not as good as sealed boxes be-
cause of the resonant effect of the vent tuning
*Midrange sound coming from inside the enclosure through the vent
can produce unpleasant sound coloration.
*Loss of cone movement control below vent tuning, which can result in high
distortion and mechanical failure of the driver.
*Lower power handling below the port tuning frequency.
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Calculating speaker enclosure volume is a five step procedure.
(Make sure you do not forget to subtract the thickness of the wood that you
have selected to use to build your enclosure.)
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Step One: Measure Height
Step Two: Measure Width
Step Three: Measure Depth
Step Four: Height x Width x Depth
Step Five: Divide the results were in step four by 1728
(12" x 12" x 12"=1728 which equals to 1.0 cu ft.)
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Complete formula should look like this
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Height x Width x Depth / 1728 =__________
Below are illustrated versions of all the steps that you should take.
(FOR EXAMPLE ONLY)
Step Two
13.5-1.5+12
13.5"
12"
18"
Step One
19.5"
The wood that we are using is 0.75" thick
The 1.5 that you see in the formula is the thickness
of the wood.
Step Three
Side View
Calculating thickness of wood:
Measure how thick the wood is then multiply by two.
The reason that you are multiplying by two is each
side of the enclosure.
Left + Right=1.5
12"
Top + Bottom=1.5
Front + Back=1.5
13.5"
13.5-1.5=12
.75 x 2=1.50
18 x 12 x 12=2592
2592 / 1728=1.5
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
1.5 cu. ft. is the results for this enclosure
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Calculating speaker enclosure volume is a five step procedure.
(Make sure you do not forget to subtract the thickness of the wood and
port displacement that you used.)
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Step One: Measure Height
Step Two: Measure Width
Step Three: Measure Depth
Step Four: Height x Width x Depth
Step Five: Divide the results in step four by 1728
(12" x 12" x 12"=1728 which equals to 1.0 cu ft.)
Complete formula should look like this
Height x Width x Depth / 1728 =__________
Below are illustrated versions of all the steps that you should take.
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(FOR EXAMPLE ONLY)
Step Two
4"
23-1.5=21.5
13.5"
4.5"
12"
21.5"
23"
Step One
The wood that we are using is 0.75" thick
The 1.5 that you see in the formula is the thickness
of the wood.
Step Three
To calculate the thickness of the wood.
Left + Right=1.5
Side View
Top + Bottom=1.5
Front + Back=1.5
7"
.75 x 2=1.50
21.5 x 13.5 x 12=3483
13.5"
15"
3483 / 1728=2.01
2.01 cu. ft. is the result for this enclosure.
Formula to calculate port displacement
3.14 x Radius x Radius x Depth=
________ / 1728=port displacement
3.14 x 2.25 x 2.25 x7=111.27 sq. in.
111.27 / 1728=.06 is the displacement of the port
2.01 - 0.06=1.95 cu.ft. is the final result for this
enclosure.
15-1.5=13.5
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
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Converting a round port to a slot port.
Calculate the area of the round port(s) being used, then use the square
root function of your calculator to get the interior dimensions of an
equivalent suare port. The length (or depth) of the slot port will be the
same as that of the round port.
To calculate area: ( Area is a two dimensional measurement )
Circle =3.14 x Radius x Radius
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4"
Circle Port
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2"
2"
4" Port
2 x 2 x 3.14=12.6
1"
12.6 x 1=12.6
Slot Port
12.6"
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
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600 Series
Model #
Fs
Qts
Qes
Qms
Vas (liters)
Vas (Cu. Ft.)
Re
Rms
Xmax +/- (mm)
Le
PSW610E
PSW612E
33
28
0.47
0.5
0.47
0.5
6.1
7.7
14
56
0.85
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3.95 x 2
600
3.4 x 2
700
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1.1
14.5
2.2
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Sd
SPL
EBP
Mmd
0.033
84.3
66
0.044
86.5
56
157
167
Freq. Resp.
33Hz-500Hz
30Hz-500Hz
Mounting Dimensions
Depth (mm)
Depth (Inches)
152mm
6"
165mm
6 1/2"
Through Hole (mm)
Through Hole (Inches)
Diameter (mm)
Diameter (Inches)
Displacement
225mm
8 7/8"
276mm
10 7/8"
258mm
10 3/16"
.137 Cu.Ft.
312mm
12 5/16"
.184 Cu.Ft.
Sealed Enclosures
Minimum Sealed
Sensitivity/dB
0.5
85
0.85
87
Maximum Sealed
Sensitivity/dB
1
84
1.75
86
Vented Enclosures
Minimum Vented
nternal Volume
Port Dia/Inches
Port Length/Inches
(-3dB)
1.5
1.38
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2
1.79
4
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36
8.75
33
Tuning Freq.
45
40
Port Displacement
0.06
0.05
Maximum Vented
Internal Volume
Port Dia/Inches
Port Length/Inches
(-3dB)
2.5
2.35
4
8.75
29
3.5
3.16
2x4
13.25
29
Tuning Freq.
35
35
Port Displacement
0.05
0.18
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Parallel-Parallel Dual 4 Ohm
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0.66 ohms
1 ohm
2 ohms
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
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Series-Parallel Dual 4 Ohm
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2.67 ohms
4 ohms
8 ohms
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
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Series-Series Dual 4 Ohm
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24 ohms
16 ohms
8 ohms
Patent No: US D478,556 S
Patent No: US 6,601,645 B1
Patent No: US 6,656,000 B2
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Investigate the layout of your vehicle thoroughly before
drilling or cutting. Take care when you work near the gas tank,
gas lines, hydraulic lines, electrical components and electrical
wiring. Do not use the equipment unmounted. Attach this sys-
tem securely to prevent damage, particularly in the event of an
accident or aggressive driving. Do not mount the system so that
wire connections are unprotected or are subjected to pinching
or damage from nearby objects. Before connecting or discon-
necting power connections at the system power terminals, dis-
connect the +12V DC wire at the battery end. Confirm that your
source unit and other equipment are turned off while connecting
the input terminals. If you need to replace the power fuse, re-
place it only with a fuse identical to the provided fuse. Using a
fuse of different type or rating may result in damage to the sys-
tem, which is not covered by the manufacturer’s warranty. Do
not install any product where it may be subjected to excessive
heat, moisture and dust or where it may be repeatedly kicked,
brushed or bumped. Make absolutely sure that the terminals
for the products are connected to the proper inputs and outputs
from the music source. Never run the wiring on the outside of
the vehicle or under it where it can be damaged by road hazards
or any moving parts of the vehicle. Use existing wire channels,
sills, panels and molding strips inside the vehicle to hide the wir-
ing for safety and a neat appearance.
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DISCLAIMER
IMPORTANT: Never cut any metal that is an integral part
of the vehicle’s safety or structural support system. If you are
unsure, it is best to have the product professionally installed by
an Authorized Alphasonik Dealer. Never sacrifice your safety for
sound.
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Alphasonik, Inc. warrants this product against all defects in material and
workmanship for a period of one (1) year from the date of original purchase
provided it was purchased from an Authorized Alphasonik, Inc. Dealer.
The conditions of this warranty and the extent of the responsibility of Alpha-
sonik, Inc. under this warranty are as follows:
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1. DATED PROOF OF PURCHASE IS REQUIRED FOR WAR-
RANTY SERVICE OF THIS PRODUCT. Information about Alphasonik, Inc.
or by contacting or writing Alphasonik, Inc. at the address listed on the back
of this booklet.
2. This warranty will become void if service is performed by any
one other than an approved Alphasonik, Inc. Warranty Service Center.
3. This warranty does not apply to any product which has been
subjected to misuse, neglect or accident, or which has had the warranty
seal broken, serial number altered, defaced or removed, or which has been
connected, installed adjusted or repaired other than in accordance with the
instructions furnished by Alphasonik, Inc.
4. This warranty does not cover car static, electrical interference,
adjustments or labor costs for the removal or reinstallation of the unit for
repair.
5. The sole responsibility of Alphasonik, Inc. under this warranty
shall be limited to the repair or replacement thereof, at the sole discretion of
Alphasonik, Inc.
6. If it becomes necessary to send the product or any defective
part to Alphasonik, Inc. or an authorized service station, the product must
be shipped in its original or equivalent carton, fully insured, with shipping
charges prepaid. Alphasonik, Inc. will not assume any responsibility for any
loss or damage incurred in shipping.
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7. This warranty is not transferable and protects the original pur-
chaser provided they reside and made their purchase in the United States.
International consumers may contact their local retailer or distributor for war-
ranty information.
8. ALL IMPLIED WARRANTIES, EXCEPT TO THE EXTENT PRO-
HIBITED BY APPLICABLE LAW, SHALL HAVE NO GREATER DURATION
THAN THE WARRANTY PERIOD SET FORTH ABOVE. UNDER NO
CIRCUMSTANCES SHALL ALPHASONIK INC. BE LIABLE FOR ANY LOSS
OR DAMAGE, DIRECT OR CONSEQUENTIAL, ARISING OUT OF THE
USE OR INABILITY TO USE THE PRODUCT. BECAUSE SOME STATES
DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY
LASTS OR EXCLUSIONS OR LIMITATIONS OF INCIDENTAL OR CONSE-
QUENTIAL DAMAGES, THE ABOVE LIMITATIONS OR EXCLUSIONS MAY
NOT APPLY TO YOU.
9. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND
YOU MAY ALSO HAVE OTHER RIGHTS THAT VARY FROM STATE TO
STATE.
10. Should you have any difficulties with the performance of this
product during warranty or with any Alphasonik, Inc. authorized service
center, you may contact the Alphasonik, Inc. National Service Manager at
the address listed on the back of the booklet card or call 714.670.8950 for a
listing of Authorized Warranty Service Centers in your area.
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INSTALLED WARRANTY
(When purchased from and installed by an Authorized Alphasonik, Inc.
Dealer)
Speaker and Accessories: 1-year over-the-counter defective exchange plus
1-year repair or replacement at the sole discretion of Alphasonik, Inc.
Electronics: 1-year over-the-counter defective exchange, plus 1-year repair
or replacements at the sole discretion of Alphasonik, Inc.
An Alphasonik Extended Warranty Registration Card must be submitted to
Alphasonik, Inc. within 30 days of purchase. To process any warranty claim,
Alphasonik, Inc. will require the dated proof of purchase, which must specifi-
cally show the model and serial number and that installation was provided
for the product in question. All other terms per Alphasonik, Inc.’s standard
one-year warranty apply.
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ALPHASONIK INC.
7050 VILLAGE DRIVE BLDG. G
BUENA PARK, CALIFORNIA. 90621
TEL: (714)670-8950 · FAX: (714)670-8959
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