liters
50 liters
Hz
25 Hz
0.35
Watts
300 Watts
Tip: For optimal bass response, aim for a Qtc between 0.7 and 1.1. Lower Qtc provides tighter bass, higher Qtc provides more bass output.

Calculation Results

Box Volume
0.00
cubic feet
Port Length
0.00
inches
Port Diameter
0.00
inches
Tuning Frequency
0.00
Hz
Box Qtc
0.00
Q factor
F3 Frequency
0.00
Hz (-3dB point)

Box Dimensions Visualization

Recommendations

Recommended Materials

MDF Board

¾ inch thick

Best for sound quality
Birch Plywood

¾ inch thick

Lightweight & strong
Particle Board

1 inch thick

Budget option
Internal Bracing

2x2 inch strips

Reduces resonance
Acoustic Foam

1 inch thick

Reduces standing waves
Wood Glue

Waterproof

For strong joints

How Speaker Box Calculator Works

Thiele-Small Parameters

Uses speaker Thiele-Small parameters (Vas, Fs, Qts) to calculate optimal enclosure volume and tuning.

Port Calculations

Calculates optimal port length and diameter for desired tuning frequency using Helmholtz resonator formula.

Frequency Response

Predicts frequency response, F3 point, and overall system Q factor for different enclosure types.

Box Dimensions

Calculates internal and external dimensions based on material thickness and speaker displacement.

Sound Quality

Recommends enclosure types for different applications (music, home theater, car audio).

Build Guidance

Provides material recommendations, bracing requirements, and construction tips.

Ready to Build Your Perfect Speaker Box?

Use our calculator to get precise measurements and recommendations for optimal audio performance.

View Example Results