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

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

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 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 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 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 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

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

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

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

Subwoofer Enclosure Calculators • Fraction to Decimal Calculator • Parallel Calculator • Port Length Calculator • Series Calculator • Volume Calculator - Rectangular Enclosures • Volume Calculator - Wedge Enclosures 1 • Volume Calculator - Wedge Enclosures 2 • Volume Calculator - Cylinder Enclosures Subwoofer Enclosures: • Calculators: Parallel, Series, Port Length, & Volume • Second Order / Infinite Baffle / Free Air • Second Order / Acoustic Suspension / Sealed Enclosures • Fourth Order / Bass Reflex & Bandpass Enclosures • Sixth & Eighth Order / Bandpass Enclosures • Subwoofer Wiring Configurations • Thiele - Small Parameters • Brian Steele's The Subwoofer DIY Page v1.1