Hummingbird SI vs DI sonar

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Hey all. I want to know from some sonar pro's here if the Side Imaging feature and Down Imaging feature are part of the same transducer, or if they are two seperate transducers. I plan on using only one at a time, 1 Sonar Monitor, not 2 as I see in common setups.


Is there a way to get high quality side imaging as part of regular purchase, or do I have to purchase a SI specific that DOES NOT include a DI unit? As i've said, I prefer one unit but would buy two if I have to.

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On 7/10/2020 at 5:35 AM, catchnr3lease said:

As far as I have seen, if your unit has SI, it should have DI as well. I have the helix mega SI/DI on my boat and split the screen to run SI/DI at the same time. 

I second this. I have the same rig and love it.


If you're new to the transducer mounting game, make sure you do some research as to the right position/location to mount it. It makes a huge difference in the sonar return quality.

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