The Airmar B75C-20-M is a high-frequency, 1 kW CHIRP transducer with a 20° tilted ceramic element, designed for vessels with hull deadrise between 16° and 24°. Operating across a CHIRP range of 130–210 kHz with an 80 kHz bandwidth, it delivers crisp, high-resolution sonar images suitable for locating baitfish, game fish, and underwater structures with remarkable clarity.
Constructed with a durable bronze housing, this transducer is optimized for fiberglass or wooden hulls, providing a nearly flush installation that reduces drag at speed. It seamlessly connects to Humminbird units via Mix-N-Match 9-pin or 14-pin connectors, ensuring broad compatibility with modern sonar systems.
Key Features
CHIRP frequency range: 130–210 kHz
Beamwidth: 15° to 9°
Tilted element: 20° for 16°–24° hull deadrise
Max depth: 700 ft (213 m)
High-resolution bottom and fish detection
Bronze low-profile thru-hull housing
Fast-response water temperature sensor
Exclusive Xducer ID® technology for auto configuration
Compatible with Humminbird systems using Mix-N-Match cables
Models:
Model
Connector Type
Tilt Angle
CHIRP Range (kHz)
Max Depth (ft)
SKU
B75C-20-M-14HB
Humminbird 14‑Pin
20°
130–210
700
B75C-20-M-14HB
B75C-20-M-HB
Humminbird 9‑Pin
20°
130–210
700
B75C-20-M-HB
Specifications
Cable length: 9 m (30 ft)
Acoustic window: Urethane
Housing material: Bronze
Suitable for hull deadrise: 16°–24°
Power: 1 kW
Max depth: 213 m / 700 ft
What's in the Box
B75C-20-M thru-hull transducer assembly
Mix-N-Match connector cable (depending on model: 9-pin or 14-pin)
Mounting hardware including fairing block and anti-rotation bolt