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Focal SUB 25 KXE — specifications and enclosures

Focal SUB 25 KXE: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.

The source lists separate coil resistance; the T/S wiring configuration must be confirmed before electrical simulation. Check the manufacturer mechanical drawing for mounting dimensions before cutting panels.

Read manufacturer PDF ↗Load driver

Manufacturer enclosure recommendations

Manufacturer recommendation

Sealed 17 L

The published volume is not confirmed as net air volume. Check the definition in the manual.

Reference recommendation: confirm net air volume after driver, port and bracing displacement before applying.

Documentation only — check the limitations before use.

PDF · page 1
Manufacturer recommendation

Sealed 22 L

The published volume is not confirmed as net air volume. Check the definition in the manual.

Reference recommendation: confirm net air volume after driver, port and bracing displacement before applying.

Documentation only — check the limitations before use.

PDF · page 1

Calculator parameters

Fs38.0 Hz
Vas20.0 L
Qes0.58
Qms5.0
ReNot provided / unverified
Sd327.0 cm²
LeNot provided / unverified
One-way linear XmaxNot provided / unverified
Frame diameter26.8 cm
Mounting cutout23.52 cm
Mounting depth17.2 cm

Additional manufacturer specifications

Published Qts0.52
Source table page1
Published Xmax (convention to confirm)22.5 mm
RMS power600 W

Data is for one subwoofer. Manufacturer recommendations are separate from CarBoxLab calculations. Net air volume excludes the driver, port and bracing; design dimensions are external. Loading a recommendation transfers the verified volume and tuning; confirm port geometry and construction separately.

Source documentation

Manufacturer technical documentation

Original manufacturer documents are not translated. Data reviewed: 2026-11-01.