Transducer Instructional

Transducer Tips by Marc Marcantonio




By Marc Marcantonio

Fall 2020


page 56


ver consider why it is called

“fishing” and not “catching?”

More time is spent trying to find bass than catching them. Before

electronics, finding good spots required trial

and error. Now, we locate them with sonar.

Sonar quality depends upon many factors,

especially the type, location, and mounting

of the transducer.

Tournament and weekend anglers alike

want to locate bass quickly. Avid anglers

will open their wallet to buy products they

believe will help catch Mama Pesce.

Consider bass boats for example. They

are carefully planned and designed to

incorporate features that solve every fishing


Shouldn’t the same thought process be

employed in planning how to rig your boat

with transducers?

With more than 45 years of advanced

bass fishing experience and boat and

sonar ownership, my use of transducers is

carefully planned and employed to maximize

their effectiveness, and my fishing success.

My preferences will be different than

others; however, by explaining my choices

and thought process it might help you to

plan your own transducer setup.

Here I will talk about the transducer

setup for Lowrance. It is important to realize

that the HDS LIVE and Carbon series have

two sonar ports, identified as Channel 1 and

Channel 2.

This allows you to rig and attach two

sonar transducers at the same time to a single HDS unit.

Additionally, I use the 3D StructureScan, which has the

StructureScan transducer attached to a 3D black box. The box is

connected to my console and bow HDS LIVE units by ethernet

cables attached to a yellow ethernet port on each HDS unit.

Let us start at the console. There are two main

objectives that dictate how I rig my transducers for my

console HDS LIVE. The first objective is to run the boat

safely at high speed, and the second is to quickly find fish,

structure, and cover.

Objective 1: High speed sonar readings (transducer designation: 9P SHT THRU HULL POD NO TEMP M/H PK ASY 00-14886-001) connected to Channel 1. The most reliable way to know the water depth when running at high speeds is to utilize a transducer that is epoxied inside the hull in the sump area. Boat manufacturers position a spot in the hull where there is a single layer of fiberglass, with no foam or air space. By bonding a transducer in this location, the transducer can send and receive its signal through the glass into the water and achieve excellent depth readings.