XSONIC Airmar B175M (0°) (1.8 m - Boatbuilder)

The XSONIC Airmar B175M (0°) transducer is a 1 kW CHIRP through-hull transducer designed for navigation and fishing. It provides depth and water temperature detection capabilities. Its fixed 0° tilted element is suitable for hull deadrise angles from 0° to 7°.

The B175M transducer uses Medium-CHIRP technology. This advanced technology provides optimized resolution and target separation, making it easier to identify fish schools, game fish, and underwater structures.

The B175M transducer operates over a CHIRP mid-band frequency range from 85 kHz to 135 kHz, with a total bandwidth of 50 kHz.

The XSONIC Airmar B175M transducer has a transmit power of 1 kW (1000 Watts), providing excellent depth penetration and detection capability.

With its 1 kW power output, the B175M fishfinder can reach a maximum depth of 457 meters (1500 feet) under ideal conditions, enabling efficient seabed exploration.

The B175M transducer provides accurate water depth data and fast water temperature readings, essential for navigation and fishing.

The B175M transducer offers a beam angle ranging from 16° to 11°, ensuring good coverage beneath the boat for target detection.

No, thanks to its fixed inclined element at 0° which compensates for hull deadrise of 0° to 7°, the B175M transducer is designed not to require a fairing block. However, a fairing block can be beneficial for fast boats to reduce turbulence and improve high-speed performance.

CHIRP transducers, such as the B175M, generate more heat than traditional transducers. They are built with heat sinks to dissipate it. To prevent overheating and failure, it is critical to install the transducer in a cool, well-ventilated area, away from the engine compartment, and to always operate it submerged in water.

The bronze housing of the B175M depth sounder is specifically recommended for fiberglass or wood hulls.

No, it is imperative never to install a bronze housing on an aluminum hull, as this would cause electrolytic corrosion and damage both the hull and the transducer.

Version 0° of the B175M transducer is designed for installation on hulls with a deadrise angle ranging from 0° to 7°.

For installation on a fiberglass or wooden hull, a 95 mm (3-3/4 inch) diameter hole must be drilled using a hole saw.

Always apply marine sealant to the threads of the mounting screws and to the entire inner surface of the strut. Immediately check for any leaks once the boat is launched and do not leave it unattended for more than three hours. Never use solvents (cleaners, fuel, paint, etc.), as they can damage plastic parts, especially the transducer face. Never pull, carry, or hold the transducer by its cable, as this could sever internal connections. Install the transducer in a cool, well-ventilated location away from the engine compartment to prevent overheating.

Choose a location where water flows smoothly, with minimal bubbles and turbulence, especially at high speed. Ensure the transducer is continuously immersed in water. The transducer beam must not be obstructed by the keel or propeller shaft. Avoid areas near water intakes or discharges, seams, fittings, or hull irregularities. For planing hulls, mount it at the stern, near the centerline and well within the first set of lifting strakes. Allow at least 178 mm (7 inches) of internal hull space for the housing height, spacer installation, and tightening of the nut and adjustment screws.

Yes, it is strongly recommended to apply a water-based antifouling paint (mandatory in saltwater) or a foul-release coating on the active face of the transducer. Airmar certifies that applying coatings such as Foulfree does not affect transducer performance and helps prevent marine growth that can degrade sonar signal quality.

The arrow on top of the transducer must point toward the keel or the centerline of the boat. This ensures the internal element is correctly aligned with the hull’s deadrise angle for optimal beam performance.

The XSONIC Airmar B175M transducer is equipped with a 9-pin connector, standard for many modern sonar systems.

The B175M transducer is supplied with a 1.8 m (6 ft) cable, providing some flexibility for connection to your equipment.

The B175M transducer is a compatible accessory for depth sounders and multifunction displays that support CHIRP mid-band technology (85-135 kHz) and are equipped with a 9-pin XSONIC/Navico-type transducer port. It is specifically listed as compatible with Lowrance equipment.