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Probably covered in the past, can't seem to find one answer...

Mtschelling

Jet Boat Addict
Messages
79
Reaction score
61
Points
87
Location
CT
Boat Make
Yamaha
Year
2016
Boat Model
SX192
Boat Length
19
Have had my new SX192 for about four months now and looking to start putting my own twist on her. I really do want to add an amplifier to the Polk's throughout the boat and see if that satisfies my need for some better sound. The question is, second battery? Or should I be ok on the house.

Normal day on the lake is about 6 hours probably 3-4 of that is playing tunes and lounging.

The boat is not all too bad on sound as she is but I am sure more upgrades will follow once I get a taste of the better sound.

Million ways to skin the cat, I get that, but what would be essential if adding an amplifier?
 
You'll probably be ok on one battery to start with. With one battery, I would install a low voltage disconnect relay to make sure I could still start the boat. Or carry a good jump pack.

To add the amp, you'll need power cables, rca cables, and to splice into the speaker wires. Make sure you buy quality marine wire. It seems expensive at the time, but it's worth it.
 
Have had my new SX192 for about four months now and looking to start putting my own twist on her. I really do want to add an amplifier to the Polk's throughout the boat and see if that satisfies my need for some better sound. The question is, second battery? Or should I be ok on the house.

Normal day on the lake is about 6 hours probably 3-4 of that is playing tunes and lounging.

The boat is not all too bad on sound as she is but I am sure more upgrades will follow once I get a taste of the better sound.

Million ways to skin the cat, I get that, but what would be essential if adding an amplifier?

Do you like playing music loud?

If not, I suggest replacing your db651 speakers with Polk mm651um speakers and at least a clarion xc2410 4 channel amp.

The speakers are drop in replacements. To install the amp remove the harness and cut the speaker wires in such a way that you can solder the amp output to the speaker inputs.
 
Have had my new SX192 for about four months now and looking to start putting my own twist on her. I really do want to add an amplifier to the Polk's throughout the boat and see if that satisfies my need for some better sound. The question is, second battery? Or should I be ok on the house.

Normal day on the lake is about 6 hours probably 3-4 of that is playing tunes and lounging.

The boat is not all too bad on sound as she is but I am sure more upgrades will follow once I get a taste of the better sound.

Million ways to skin the cat, I get that, but what would be essential if adding an amplifier?

You're on the right track. An amplifier will make a big difference, even with the speakers you have now. The HU will definitely reach its power limitations far before your speakers will show the fist hint of distortion. In fact, any limitation that you hear now is the HU power.
Given the limited Yamaha charging system, you want to look at only Class D high efficiency amplifiers. JL Audio would be a great place to look.
If you have long periods at rest (several hours) playing the stereo at a moderate level, then you must have a second battery, which will allow the starting battery to remain in isolation and reserve.
Some people are mainly concerned about the boat being able to start. But you should also be very aware of the depth of discharge and how that relates to battery longevity.
There are a number of dual battery switching options. A manual switch. Or, a voltage sensing relay combined with a manual switch. The second option has many advantages.
After a protracted stay at rest, with a deep discharge and a short distance/time back to the slip or trailer, given the limited Yamaha charging capacity, it's unlikely you will have full battery restoration. Without full battery restoration before going into storage, the battery performance will soon be compromised and its lifespan will be shortened. So having AC power access and a Smart shore charger completes your needs.
 
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