Marine Electronics Ratings
Independent Customer Reviews of Popular Marine Electronics
| Overall Rating |   |
Garmin 400C Sonar
Garmin Fishfinder 400C Sonar without Transducer
Ideal for fresh and saltwater fishing with dual frequency, dual beam transducers. Spot the big one on the 400’s crisp, ultra-bright 4″ QVGA color sunlight viewable display. Use with dual frequency, dual beam transducers (not included) make this a good choice for fresh and saltwater fishing. When set up for offshore setup, you’ll get a true A-scope display for instantaneous sonar data. When configured for inland use (dual beam), a round flasher viewing option is provided. The 400W RMS dual beam version offers a wide fishfinding cone and reaches depths to 900′, while the 500W RMS dual frequency setup can go as deep as 1,500′. Features UltraScroll™ for screen updates at live-action speeds. And Garmin’s plug-and-play CANet™ bus enables sonar data to be easily shared with compatible Garmin chartplotter displays. 
| Manufacturer: Garmin |
| Customer Rating: See Reviews | Sale Price: View Sale Price |
| Availability: View Product Availability |
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6 Customer Reviews of “Garmin 400C Sonar”
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Garmin 400C Sonar Review by snooky430, January 22, 2009
Buck Mulvaney, Fox Lake, WI., Have owned and had 240 for 7rs and sent it into the factory for updates. It is the simplest sonar i have ever used and once you get to know what type fish species you are looking at, it is the cats meow. Have never had any problems since owning it. Fantastic product and am going to purchase the 400 this year
Garmin 400C Sonar Review by Duhman, March 3, 2009
The only problem is in water under 1.8 to 2.0 feet, the Garmin 400C loses the depth, then the display will read about double the depth.
The rest of the operation is great, colors, depth, and showing of structure are accurate. Enjoy using the Garmin 400C.
Garmin 400C Sonar Review by DOLSTER, April 7, 2009
THIS UNIT SHOULD COST MORE AS ITS TWO FISH FINDERS IN ONE.ITS A SONAR AND WITH THE TOUCH OF A BUTTON ITS A FLASHER! GARMIN IN MY OPINION HAS MADE A GOOD FISH FINDER AT A GOOD PRICE . EXCELLENT UNIT!
Garmin 400C Sonar Review by captbly, May 25, 2009
Just got it and love it so far
Garmin 400C Sonar Review by Ricky500, June 26, 2009
The first day, it worked great. The second day, the sonar still worked, but the temperature reading started reporting bizarre results, like 169 degrees. The third day, the screen started freezing up after a short while. The fourth day, it would “beep” when you turned it on, but no display.
I called Garmin and they told me how to manually reset the unit. This gave me a display temporarily, but it would then lock up again.
I returned the unit. I have not yet decided whether to replace it with another Garmin or go with another brand.
As far as performance when it worked, it appeared to do a good job. However, the manual is not very informative about how to interpret the display. They tell how to set your preferences, but little or nothing about how to “read” the sonar returns to identify fish from background clutter or other objects.
If it worked like the first day, I would give it 3 or maybe 4 stars.
Garmin 400C Sonar Review by Duhman, July 5, 2009
The only problem is in water under 1.8 to 2.0 feet, the Garmin 400C loses the depth, then the display will read about double the depth.
The rest of the operation is great, colors, depth, and showing of structure are accurate. Enjoy using the Garmin 400C
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