Box Builder

📋 Set trunk limits → 🔊 Choose driver → 🎯 Target volume → ✨ Get dimensions

Maximum Trunk / Hatch Area

These are the hard limits for your enclosure based on available space.

Use trunk constraints

Suggestion Mode

Max Width (in) Max Height (in) Max Depth (in)

Available space: calculating...

Driver Selection

Driver Size (in)

Driver Displacement (ft³) — Reduces usable volume Driver Depth (in) Driver Quantity

Driver Cutout Diameter (in) Mounting Depth (in)

Sensitivity (dB @ 1W/1m) Voice Coil Diameter (in)

Paste driver recommended volumes (Parts Express)

Parsed Sealed Volume (ft³) Parsed Vented Volume (ft³) Sealed F3 (Hz) Vented F3 (Hz)

You can adjust these values manually — edited fields are highlighted. Click Apply Preview to use the previewed values. Clicking Parse & Apply will re-parse the paste and reset these preview values to the pasted data.

Enclosure Type & Tuning

Enclosure Type Target Tuning Frequency (Hz) Bracing Displacement (ft³)

Port Type Slot Port Width (in) Slot Port Height (in) Slot Port Length (in) Slot Port Count Round Port Diameter (in) Round Port Length (in) Round Port Quantity

Auto Port Mode Auto Port Area (in² / ft³) Min Round Port Diameter (in) Slot Aspect Ratio (W:H) Min Slot Height (in) Min Port Length (in)

Speed Of Sound (in/s) Inside End Correction Outside End Correction Length Adjustment (in)

Manual port sizing is active.

Auto Dimension Priority 1 Auto Dimension Priority 2 Auto Dimension Priority 3

Width Weight (%) Height Weight (%) Depth Weight (%)

Auto dimensioning uses the priority order first, then weights to bias the base shape before fitting target volume within constraints.

Tuning frequency affects port design. Sealed enclosures don't require tuning calculation.

Port Mount Face Multi-Port Layout Port Spacing (in) Port Extension Mode

Port Offset X (in) Port Offset Y (in) Port Offset Z (in)

Slot Port Internal Channels Slot Channel Gap (in) Slot Fold Axis Slot Fold Direction Slot Lead Run Offset (in)

Offsets are measured from the enclosure center. The selected face uses the two relevant axes and ignores depth-normal offset.

3D Shell Opacity 3D Port Opacity Port Wall Thickness (in)

Live Box Diagram

W (in) H (in) D (in)

Quick adjust uses your current dimension mode (internal/external). -

Designer Mode (drag box handles in diagram)

Designer Snap (in)

Experimental 3D Preview

Depth Direction Box Position (Depth) Sub Facing Driver Layout Show Interior Lock 3D Zoom Lock 3D View Enable 3D Editing

3D fit status: -

3D interaction hint: -

3D debug: waiting for pointer input.

Designer Views

Use these flat views for precise layout work. They stay synchronized with the live diagram and 3D preview, and folded slot channels are shown here as real internal runs.

Front

Side

Top

Calculated Output

Internal Dimensions -

External Dimensions -

Gross Volume -

Net Before Driver -

            Net After Driver
            -
          

Status

Manual Box Calculator

Manually enter dimensions to calculate volume, or use the Target Volume Helper above to get suggestions.

Cabinet Shape Width (in) Height (in) Depth (in) Wood Thickness (in)

External Internal

Quick Volume Sizing

Get suggested box dimensions for a target volume.

Suggestion Mode

Auto Dimension Priority 1 Auto Dimension Priority 2 Auto Dimension Priority 3

Width Weight (%) Height Weight (%) Depth Weight (%)

Desired Net Volume (ft³)

Suggested Internal Dimensions -

Cut Sheet

Build view keeps construction details separate from sizing workflow.