Micro Speaker Detail

UR32W4-18F Micro Speaker

Ultra-slim full-range driver engineered for handheld and wearable devices.

Model

UR32W4-18F

Profile

4.2 mm thin

Output

5 W music power

Application

Wearables · IoT

Low-profile steel frame fits ultra-thin industrial designs.
Double-layer suspension maintains excursion linearity at high SPL.
Weather-treated diaphragm and lead wires for ruggedized deployments.
Pairs with Gui Sound miniature amplifiers for turnkey ODM engagements.

Prototype render Gui Sound Lab

Key Specifications

Dimensional data is captured on production tooling. Power metrics reference Gui Sound standard acoustic lab conditions.

Dimension (mm)

Industrial tolerances ±0.1 mm

Diameter 32 mm
Width 19.2 mm
Height 4.2 mm

Power Handling

Thermally managed copper coil

Rated Input 3 W
Music Power 5 W

Impedance

4 Ω

Frequency Response

150 Hz – 20 kHz

Sensitivity

88 ±3 dB @ 1W/1m

Voice Coil

Copper-clad aluminum, 18 mm

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