SoundVision Subwoofer Finder V18

SELECT SUBWOOFER

DATABASE: 12 JL AUDIO MODELS

Outer Frame—

Mounting Hole—

Mounting Depth—

Ported Enclosure Calculator

NET AIRSPACE (FT³)

TUNING (HZ)

PORT TYPE

PORT AREA (IN²)

SLOT WIDTH (IN)

SLOT HEIGHT (IN)

ROUND PORT DIAMETER (IN)

For a slot port, area = width × height. For a round port, area = π × diameter² ÷ 4.

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CALCULATED PORT LENGTH

PORT DISPLACEMENT—

MIN. GROSS VOLUME—

Design My Port

MAX TARGET VELOCITY (FT/S)

PORT STYLE

The tool sizes the port for the target velocity and calculates the required effective port length. You can model straight, folded, or custom-shaped ports in Shapr3D as long as the total effective length and cross-sectional area are maintained.

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RECOMMENDED AREA—

PORT LENGTH—

PORT DISPLACEMENT—

MIN. GROSS VOLUME—

Box Builder

EXTERNAL WIDTH (IN)

EXTERNAL HEIGHT (IN)

EXTERNAL DEPTH (IN)

MATERIAL THICKNESS (IN)

BAFFLE / OTHER DISPLACEMENT (FT³)

Enter the outside dimensions of your enclosure and the material thickness. V18 subtracts twice the material thickness from each outside dimension to calculate the internal dimensions, then subtracts the selected woofer, port, and other displacement to determine net airspace.

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CALCULATED NET AIRSPACE

GROSS INTERNAL—

TARGET NET—

INTERNAL W × H × D—

EXTERNAL W × H × D—

Add Your Own Subwoofer

Add a model with the measurements and T/S values you know. Custom models are saved in this browser on this device.

MODEL NAME

MODEL ID

OUTER DIAMETER (IN)

CUTOUT DIAMETER (IN)

MOUNTING DEPTH (IN)

DISPLACEMENT (FT³)

SEALED AIRSPACE (FT³)

PORTED AIRSPACE (FT³)

Sd (IN²)

XMAX (IN)

Port Velocity Check

Sd (IN²)

XMAX (IN)

Worst-case peak flow estimate if the cone reaches Xmax at the tuning frequency. Use this as a conservative sizing check — it is not a prediction of actual operating port velocity.

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