[Carl]

Thanks for all the replies and advice. I have realized it's all about the wattage - ie the x-ducer. I made a bad assumption that the 160c replaced the 160 blue because it has the same designator. The 160c is 150 watts (RMS) and 1200w peak to peak - where as the 160 (blue) is 400w and 3200w peak to peak. The garmin 250 is similar in wattage as the 160 blue -

Thanks for the heads up BR.

I will let you know when I pull the trigger on a purchase.

Thanks

Carl