Question for the humminbird Guru's

[forrestercb]

I recently replaced my 1199 with a helix 10 g2n mega si, while pulling the old transducer out I found that it had a y cable attached with one side labeled SI and the other Dual Beam. I havent seen any other transducers on my boat. I did notice that with my 1199 and its transducer configuration that I was able to start scanning as soon as i came off plane and was able to see 2D while running mid to slow speeds. Now with my helix and not having that dual beam y cable attached it takes a while to start scanning and I cant get the depth reading while on plane. Can someone explain this to me? If in fact the dual beam attached to the y cable made the difference can I use that same Y cable with my helix g2n to get the results I had with my 1199? TIA

[ezfishn]

If you were using the 1199 and y-cable previously with 2D performance while on plane, you would have a 2D transducer somewhere in the bilge area near back of boat. With the introduction of MEGA models, the y-cable was changed to 9 M SIDB Y. You can still use the same 2D transducer. That would be a standard setup for a glass boat to get higher speed 2D performance.

[forrestercb]

Yeah that makes sense, however I havent seen any other transducers, atleast not visual externally.

[ntslam]

It's gonna be on the inside of the boat. Shoot thru transducers will be epoxied in the bilge area somewhere. If you can find the cable that was connected to the y cable it will lead you straight to it

[forrestercb]

Thank you. I guess i was thinking of thru hull transducer instead of shoot thru the hull.

[BassCatKev]

I'll stay out of the way and let the pros on here verify this but I THINK you will need a different shoot through transducer with the Mega unit. There was a thread about this just the other day.

[ezfishn]

I'll stay out of the way and let the pros on here verify this but I THINK you will need a different shoot through transducer with the Mega unit. There was a thread about this just the other day.

If it is a Gen2 MEGA model, it can use the XP-9-20(t) in-hull transducer. If it were a Gen3 model, you would want the newer Dual Spectrum in-hull XP-9-HW for added CHIRP frequencies and a better quality CHIRP capability (lower Q-factor).

[Bob B]

If you have to replace it, you could use XP 9 HW transducer to take advantage of the low q transducer. The newest update for the G2N has a setting for the HW transducer.