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car audiowoofercalculator

Subwoofer Enclosure Calculators - Fraction to Decimal, Parallel, Series, Port Length, & Volume

To calculate interior volume, first convert all fractions to decimals (½ = .5) before entering the width, height, depth, or diameter, and thickness into any of our speaker box calculators below. For additional subwoofer wiring options, please see our Subwoofer Wiring Wizard.

Subwoofer Enclosure Calculators:

Fraction to Decimal Calculator
Parallel Calculator
Port Length Calculator (round)
Port Length Calculator (slot)
Series Calculator
Volume Calculator - Rectangular Enclosures
Volume Calculator - Wedge Enclosures 1
Volume Calculator - Wedge Enclosures 2
Volume Calculator - Cylinder Enclosures

Fraction to Decimal Calculator

top of page Fraction to Decimal Calculator
In the fraction ½, 1 is the numerator and 2 is the denominator.
Numerator Decimal
Denominator

Parallel Calculator

top of page Parallel Calculator
Enter at least 2 values and up to 10 values to calculate the resistance of speakers or voice coils connected in parallel. R = Resistance in Ohms.
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R Total
ohms ohms ohms ohms ohms ohms ohms ohms ohms ohms ohms

Series Calculator

top of page Series Calculator
Enter at least 2 values and up to 10 values to calculate the resistance of speakers or voice coils connected in series. R = Resistance in Ohms.
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R Total
ohms ohms ohms ohms ohms ohms ohms ohms ohms ohms ohms
 
 

Round Port Length Calculator

top of page Round Port Length Calculator
To calculate the port length of a round port, enter the diameter of the port (D), the box volume (Vb) in cubic feet, and the desired tuning frequency (Fb). Here is the formula we use: ((14630000*(D/2)*(D/2))/((Fb*Fb*Vb*1728)-(1463*(D/2)))) Please compare your answers with other programs that include other allowances such as tapered ports.
Port Diameter (D) Box Volume (Vb) Tuning Frequency (Fb) Port Length
inches cubic feet hertz inches

Slot Port Length Calculator

top of page Slot Port Length Calculator
To calculate the port length of a slot port, enter the width and height of the port, the box volume (Vb) in cubic feet, and the desired tuning frequency (Fb).
Port Width Port Height Box Volume (Vb) Tuning Frequency (Fb) Port Length
inches inches cubic feet hertz inches

Volume Calculator - Rectangular/Square Enclosures

top of page Volume Calculator - Rectangular/Square Enclosures
Measure the outside dimensions of your enclosure and the material thickness, then enter the numbers below to calculate interior volume. **Note: If you used dividers and/or braces, the volume of each divider/brace will need to be subtracted from the interior volume.
Width Height Depth Thickness Interior Volume
inches inches inches inches cubic feet
Rectangular/Square Enclosure

Volume Calculator - Wedge Enclosures 1

top of page Volume Calculator - Wedge Enclosures 1
Measure the outside dimensions of your enclosure and the material thickness, then enter the numbers below to calculate interior volume. **Note: If you used dividers and/or braces, the volume of each divider/brace will need to be subtracted from the interior volume.
Width Height Depth Thickness Interior Volume
inches inches inches inches cubic feet
Wedge Enclosure

Volume Calculator - Wedge Enclosures 2

top of page Volume Calculator - Wedge Enclosures 2
Measure the outside dimensions of your enclosure and the material thickness, then enter the numbers below to calculate interior volume. **Note: If you used dividers and/or braces, the volume of each divider/brace will need to be subtracted from the interior volume.
Width Height 1 Height 2 Depth Thickness Interior Volume  
inches inches inches inches inches cubic feet  
Wedge Enclosure

Volume Calculator - Tube/Cylinder Enclosures

top of page Volume Calculator - Tube/Cylinder Enclosures
Measure the outside dimensions of your enclosure and the material thickness, then enter the numbers below to calculate interior volume. **Note: If you used dividers and/or braces, the volume of each divider/brace will need to be subtracted from the interior volume.
Diameter Height Thickness Interior Volume
inches inches inches cubic feet
Tube/Cylinder Enclosure
<< Previous - Thiele - Small Parameters Next - Subwoofer Wiring Wizard >>

Subwoofers, Enclosures, & Calculators:
Second Order / Infinite Baffle / Free Air
Second Order / Acoustic Suspension & Sealed Enclosures
Fourth Order / Bass Reflex & Bandpass Enclosures
Sixth & Eighth Order Enclosures
Parallel & Series Calculators
Subwoofer Enclosure Calculators
Subwoofer Wiring Wizard
Thiele - Small Parameters
Help and Additional Resources:
Car Audio Forum
Car Audio Home
Car Audio Hot Topics
Car Audio Manuals
Passive Crossovers & Calculators
Stereo to Bridged Mono Switched Outputs
Switch Series to Parallel and Back
Switch Stereo to Bridged Mono & Series to Parallel

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Wednesday, July 18, 2018 • Copyright © 1999-2018 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
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