Marcum LX-7 Ice Fishing Sonar System/Fishfinder – LX-7 Review

Marcum LX-7 Ice Fishing Sonar System/Fishfinder – LX-7

Marcum LX-7 Ice Fishing Sonar System 1

Rating: 4.3/5


Screen Resolution




• It is the best ice fishing sonar on the market.

• It comes with a dual beam transducer that is easy to adjust.

• It is easy to use.

• It has a large screen that makes objects clear.

• The pictures can be zoomed without losing their clarity.


• Customers have complained that the unit loses charge when it is not in use.

• It is difficult to use.



It is the most advanced ice fishing sonar that comes with a customizable dashboard and a dual beam transducer. It gives the angler five sonar windows to choose from.

Marcum LX-7 Ice Fishing Sonar System 4

Marcum LX-7 Ice Fishing Sonar fish finder has redefined the fishing landscape and given anglers options that were not available to many a few decades ago. The unit came into existence a decade ago and has indeed revolutionized the ice fishing industry.

The unit is capable of displaying up to 3 windows at once. Indeed, it is one of the most advanced fishing systems on the market.

Main Usage

The Marcum LX-7 Ice Fishing Sonar offers a larger screen and is ideal for fishing in both shallow and deep water. It is suitable for anglers who like ice fishing since it is sensitive, allows for a vertical zoom that enables the angler to see the entire water column and identify the suspended fish.

Marcum LX-7 Ice represents the industry’s unique sonar technology that displays the area bottom of the water using an 8° or 20° transducer cone angle. With this device, you get an underwater picture which is displayed on the screen in real time.

Marcum LX-7 Ice Fishing Sonar System 3

The device allows the angler to zoom images, is sensitive, and is designed to reject any form of interference. The unit comes with a Multifaced Sonar display LCD window and features the powerful LCD sonar that generates pictures almost immediately. It comes with a dual beam transducer, a rugged transport shuttle, and a protective clear shield.

Product Features

Screen Resolution:

The Marcum LX-7 fish finder boasts of a bigger 5.7” screen that has a resolution of 800 x 600 pixels. This means that the unit is capable of displaying 800 dots in each row to the right and 600 dots in the column. This is an excellent resolution that makes the finder give very sharp images with more details which can be used to make fishing decisions.

The pictures will be clear since the echoes, numbers, and data will spread out evenly and enable the angler to see more details and differentiate between the targeted fish and any other objects under the bed.


The power of the finder determines how well you will be able to see the objects under silt-laden water. It also determines the extent of depth you will be able to view. Marcum LX-7 Ice Fishing Sonar is capable of a maximum 4,800w peak to peak power.

This is a great power that makes the unit suitable for anglers who ply their trade at the coastal areas. It enables them to see the bed of the water with ease since it can translate the sonar waves and give clear readings.

The unit has 600 RMS power rating which allows it to quickly translate the waves received from the traducer into images that are sharp and clear.

Marcum LX-7 Ice Fishing Sonar System 2


Selecting a finder with high frequencies is important because it allows the angler to see the finest details. The Marcum LX-7 Ice Fishing Sonar fish finder is a dual frequency finder that gives the angler the 50 kHz/200 kHz operating frequencies to choose from. The 50 KHz frequency makes the unit ideal for anyone who wants to catch fish that hide in caves in deep water.

Marcum LX-7 Ice Fishing Sonar System 5

On the other hand, anglers who love fishing in shallow waters can utilize the 200 kHz option that shows more details of shallow water onto the screen. Detailed images are essential especially if mapping out the area of operation or targeting certain species of fish in new fishing areas.

Also, the fact that unit comes with a 5.7” screen gives the angler clear images that enable him to understand everything that is happening under water.

Cone Angle:

The unit features cone shaped transducers which switch from the wide 20-degree angle to the narrower 8-degree cone angle that gives an accurate view of objects under 40’. The Marcum Digital Sonar displays the extent of coverage when fishing. This is important data that is displayed below the cone angle icon and keeps the angler updated about the extent of the area being covered.

When the sonar is first turned on, it transmits at the 20-degree angle but can be adjusted using the up and down button to 8 degrees. The angler is free to adjust the size of the signal using the target adjuster.


The Marcum LX-7 fish finder is a versatile unit since it comes with a high-end transducer that allows the angler to have a three-dimensional view of the bottom. The angler has the 8 degrees and the 20-degree cone angle to choose from which ultimately determines the area the transducer covers.

These are great cone angles that make the transducer ideal for ice fishing. The transducer utilizes the sonar technology that increases accuracy by over 200%. It allows and enables the angler to tell the type of fish that is approaching the bait without guessing.


The Marcum LX-7 Ice Fishing Sonar System is a highly rated unit that has impressed anglers in many aspects. It has helped anglers improve their accuracy by 200 % and can help you map out the area you want to fish in with ease.

The unit is far much better than the mechanical flasher and will make your ice fishing escapades quite enjoyable. It works great in deep lakes and can be set to help you get the display you want.

The unit can be set to the noise rejection mode; it has a bigger screen, is awesome, and will give you a new fishing experience.

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