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Lowrance Mark-5x DSI Fishfinder Review

Lowrance Mark-5x DSI Fishfinder has an average rating of 3 out of 5 based on 4 user reviews.



Increase your success with the powerful, full featured and easy to use Lowrance Mark-5x DSI. The quick release bracket allows you to easily install the device so you can focus time and energy on tracking fish. User-friendly attributes such as a menu that uses text and icons, as well as the choice of manual or automatic tuning make it a viable tool regardless of your skill.

Since the Mark-5x DSI has a sonar power output of 4000w PTP/500w RMS, depth and speed are not an issue. You will receive high quality sonar images at depths of up to 250ft and with boat speeds of 40mph. The dual 455/800 kHz frequency of the sonar helps to ensure a wider, deeper coverage. The included transom-mount Skimmer DSI transducer comes complete with a built-in temperature sensor and down looking crystal that works with the fishfinder to produce the maximum results.

Looking back over the water you have covered and pinpointing hotspots is made simple with TrackBack technology. Scroll through pages of sonar history to save yourself time and effort in retracing your steps. Chartplotter allows you to keep track of your route for easy viewing at any time.

As sonar images are taken underwater, they are presented to you in photo quality on the 5” screen of the Mark-5x DSI. The 480 X 480 sixteen level grayscale displace is easily enhanced by direct sunlight. The screen and keypad also have a bright LED backlight so that fishing at night is never a problem.

You can get a great deal on Lowrance Mark-5x DSI Fishfinder here.

 Humminbird 561 DILowrance Mark-5x DSIHumminbird 571 DI
Screen Size5 in / 127 mm5 in / 127 mm5 in / 127 mm
Screen Resolution320 x 320 pixels480 x 480 pixels640 x 320 pixels
Display Type12-level grayscale16-level grayscale LCD16-level grayscale
Imaging2D and Down ImagingDown Imaging2D and Down Imaging
Transmit PowerR00W RMS
4000W Peak-To-Peak
500W RMS
4000W Peak-To-Peak
500W RMS
4000W Peak-To-Peak
Sonar Frequency200/455 kHz 2D Sonar
455/800 kHz Down Imaging
455/800 kHz200/455 kHz 2D Sonar
455/800 kHz Down Imaging
Maximum Depth350 ft (DI), 600 ft (2D)250 ft350 ft (DI), 600 ft (2D)

User Reviews

Posted by BassFisher

  • 4/5

If you’re looking for a mono fishfinder that can display structure very well then Mark 5X DSI is your best bet. It also does a great job of finding fish but the fish are displayed as outlines instead of the usual arches so it does take some getting used to it.

Posted by ecarroll62

  • 4/5

The Lowrance Mark-5x DSI fishfinder is at the very top of mid-range units. Using innovative DownScan Imaging the Mark-5x gives you lifelike images using sonar to reflect sound waves off of the fish and other objects in the water. The Lowrance Mark-5x gives you precise and beautiful images that also let you see where the climates are changing in the water telling you where the fish are hiding and where your lure needs to be.

A back-lit and water resistant 5-inch monochromatic display is easy to read when the sun is too bright or the clouds are out. Using the key-lit feature an angler can even use this fish finder at night. The FSTN display has a high resolution of 480 x 480 so it will not be a problem seeing clear images that the sonar pick-up.

The Lowrance Mark-5x DSI puts out 4,000 peak-to-peak watts and 500 RMS. Along with the high wattage the fishfinder also uses frequencies up to 800 khz, making the Mark-5x able to locate fish with ease. Using the Skimmer DSI transducer you get water temperatures, water speeds, and much more. The transducer can be either transom or motor mounted. The maximum depth amount is a very manageable 250’ as that should allow you to see the bottom of most fishing spots. There is an audible alarm letting you know different things such as if you are too shallow or too deep.

The Mark-5x is a very easy unit to manage because of its easy menus and usability. A very unique feature for a fishfinder is the way that you can choose between manually making your best image or just putting the unit on cruise control and having it decide what are the best options for you. The extreme simplicity of navigating through this fishfinder can be directly attributed to the Unique TrackBack feature on this unit. Warranty is one year parts and labor, so you know that you are purchasing a quality product backed by a warranty.

Posted by Bass Fishing

  • 1/5

I bought this fishfinder a month ago and used many times since then. I’ve spent all this time changing the settings and tweaking the configuration but I still can’t get the display to work properly. The screen is always cluttered and hard to read. It was piece of cake to install but that’s the only good thing about this unit. I’ll have to return it.

Posted by Chriatian Joffson

  • 3/5

While this unit is nothing special it does what I need it to. I mainly use it for depth and water temperature readings. Here are a few things to consider before purchasing one yourself.
1) I planned on setting the Elite-5 up in the cockpit with a Mark 5 I already owned in the bow and switch them out as needed. Unfortunately even though the mounts match up the units use different connectors. I guess that is something I should have checked out before buying.
2) The upgraded transducer for temp readings came included in the box along with the trolling motor mount. I was unaware and spent an extra $20 ordering the mount by its self.
3) The mount has quite a bit of play in it allowing the display to tilt easily. This becomes a problem with the viewing angles especially when wearing sunglasses. Not a huge problem but something to be aware of.
In the end it meets my needs so not much to complain about.

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