Marine Electronics Forum

how many watts?

Old 03-26-2018, 01:16 PM
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Default how many watts?

I think this is the year I will finally put a stereo on the boat. In years past, we have used a Bose bluetooth speaker but I'm looking for something that can't be forgotten at home anymore. Most receivers seem to be around 50W per channel, is this enough? We're certainly not looking to rock the boat but I'd like something that will be loud enough to hear over a pair of Yamaha OX66 when underway.
Old 03-26-2018, 01:53 PM
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Well being 2 strokes, you need more wattage, If those where honda 4 strokes you have to much power at 50 watts per channel.

IMHO at cruise does not lead to good listening experience. on the beach and troll/idle. You would be fine.

If you want more power you will likely need a separate amp. Most head units are very optimistic at the ratings. Mine is 50 watt per channel, and I find it a little lacking, but that could be my speakers, I continue to use the ones that the crooks left behind when the took the head unit.
Old 03-26-2018, 03:29 PM
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They make some smaller amps these days that would give you enough power to hear on the way. Just remember the speakers are as important as the amp. Cheap stuff is only going to last you a couple years max. Unless you keep boat stored inside. Just my .02 worth
Old 03-27-2018, 05:46 AM
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That "50 watts" is peak power most likely occurring in a dream somewhere. Most heat units will produce around 15 watts. Kicker has some great small footprint amps that would do the job when paired with the appropriate speakers.
Old 03-27-2018, 05:52 AM
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You may want to consider a fixed mount bluetooth pod/amp system
Old 03-27-2018, 06:26 AM
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My Fusion 750 has 70 watts peak per channel, very laud for me even when under power. I have a pair of Yamaha 4 stroke 250's, so your 2 strokes are most likely lauder.

Remember peak output power is rated typically at 2 ohms speaker load per channel. So if your speakers are say 4 ohms you have less than the rated power per channel.

I would suggest more than 50 say 70-100 watts per channel. Find a head unit with more power rather than a power amp if possible.

Folks use higher power head units and power amps many times to provide a better sound. You will have less distortion and more dynamic range by providing more power per channel. The closer you come to the peak output power of an amplifier you will have more distortion and less dynamic range.


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