M4-WBT Cylinder Broadband Transducer

AOTC’s Model M4-WBT multi-band wideband cylindrical acoustic transducer is used in underwater sound sources and other related scenarios. It is divided into 4 sub-transducers, and each sub-transducer covers a specific frequency band, achieving a total frequency coverage range of 10kHz to 500kHz.

● Resonant frequency (fᵣ): 18.7 kHz
● Static capacitance (C₀): 95 nF
● Recommended frequency range: 10～40 kHz
● TVR @ fr: 147 dB re 1 μPa•m/V
● Source level @ fᵣ: 200 dB re 1 μPa•m
● Horizontal Beam pattern : Omnidirectional
● Vertical Beam pattern: ∞
● Maximum operating depth: 300 m
● Cable: 13 mm diameter polyurethane cable
● Cable length: Standard 15 m, customizable
● Main body material: Stainless steel
● Weight: 3 kg

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cylinder transducer

M4-WBT 18.7 kHz

M4-WBT 53.5 kHz

M4-WBT 140 kHz

M4-WBT 420 kHz

Main parameters (typical values) of 10 -40 kHz sub-transducers

● Resonant frequency (fr): 18.7 kHz
● Static capacitance (C0): 95 nF
● Recommended frequency range: 10～40 kHz
● TVR @ fr: 147 dB re 1 μPa•m/V
● source level @ fr: 200 dB re 1 μPa•m
● Horizontal Beam pattern : Omnidirectional
● Vertical Beam pattern: ∞

● Maximum operating depth: 300 m
● Cable: 13 mm diameter polyurethane cable
● Cable length: Standard 15 m, customizable

● Main body material: Stainless steel
● Weight: 3 kg

Performance curve (typical values)

Transmit Curve

Hydrodynamic Admittance Curve（G & B）

Vertical Beam Pattern @25kHz

Main parameters (typical values) of 40 - 85 kHz sub-transducers

● Resonant frequency (fr): 53.5 kHz
● Static capacitance (C0): 19 nF
● Recommended frequency range: 40~85 kHz
● TVR @ fr: 145 dB re 1 μPa•m/V
● Source level @ fr: 200 dB re 1 μPa•m
● Horizontal Beam pattern: Omnidirectional
● Vertical Beam pattern: ∞
● Maximum operating depth: 300 m
● Cable: 13 mm diameter polyurethane cable
● Cable length: Standard 15 m, customizable
● Main body material: Stainless steel
● Weight: 3 kg

Performance curve (typical values)

Transmit Curve

Underwater Admittance Curve（G & B）

Vertical Beam Pattern @60kHz

Main parameters (typical values) of the 85 - 200 kHz sub-transducer

● Resonant frequency (fr): 140 kHz
● Static capacitance (C0): 5.5 nF
● Recommended frequency range: 85~200 kHz
● TVR @ fr: 148 dB re 1 μPa•m/V
● Source level @ fr: 203 dB re 1 μPa•m
● Horizontal Beam pattern: Omnidirectional
● Vertical Beam pattern: ∞
● Maximum operating depth: 300 m
● Cable: 13 mm diameter polyurethane cable
● Cable length: Standard 15 m, customizable
● Main body material: Stainless steel
● Weight: 3 kg

Performance curve (typical values)

Transmit Curve

Underwater Admittance Curve（G & B）

Vertical Beam Pattern @150kHz

Main parameters (typical values) of 200 - 500 kHz sub-transducers

● Resonant Frequency (fr): 420 kHz
● Static Capacitance (C0): 7.8 nF
● Recommended Frequency Range: 200~500 kHz
● TVR@ fr: 156 dB re 1 μPa•m/V
● Source Level @ fr: 203 dB re 1 μPa•m
● Horizontal Beam pattern: Omnidirectional
● Vertical Beam pattern: ∞
● Maximum Operating Depth: 300 m
● Cable: 13 mm Diameter Polyurethane Cable
● Cable Length: Standard 15 m, Customizable
● Main Body Material: Stainless Steel
● Weight: 3 kg