I’ve had the worst luck with aftermarket sound in my vehicles so I don’t wanna do a bunch of stuff. Just a little louder and more crisp mostly for under way with the main engine. At max volume I can’t hear the factory system when under way and can barely hear it using No Wake Mode.
I’m sure the factory jbl is only pushing 18watts per channel so this is probably a long shot question with just a speaker upgrade. But maybe someone has done it.
Mine is kinda the same, although I can hear my tunes when at idle but the engine sound is still quite loud. The linked thread below outlines the next step to reduce the overall perceived sound of your boat with the engine on. The sound reduction project is on my list of things to do as when I’m trolling at higher trolling speeds I use the engines and I’d like it to be quieter, it’s probably never going to be as quiet as outboards would be but if I can knock 3DB off (a halving of perceived sound) that would be a huge improvement. My plan will be to put sound deadening and absorbing materials on the engine hatch, the hatches of the storage compartments on either side of the engine bay, front, side, and rear bulk heads of the engine bay as well as in the aft bilge area which like the engine bay is a big drum. I’m also thinking of sound absorbing mats under the engines.
NOTE; Yamaha appears to have done away with egg crate foam type of sound insulation and has gone to the type that
@Dixemon put on his engine hatch.
I added sound shield to the engine compartment. I could not salvage the stock egg crate foam. Any suggestions on the best acoustic foam material to add to the compartment over the sound shield?
thank you
We get more wind noise on our boats than the bow rider boats do. I use these when I’m trolling all day by myself and all the time when I’m cruising any distance, or when using lawn equipment, riding dirt bikes using power tools etc…after six years I’ve still got well over half of these left.
The other thing that I’ve found that cuts the sound down at cruising speed is a properly tuned impeller, there’s a lot of vibration / noise that comes out of the pump as well, in my experience a set of Skat Trak impellers dropped the sound level by 3DB in my boat, unfortunately the base pitch of those impellers is too high to be used at high altitude where I do the majority of my boating, and they’re not in business anymore, but I’m sure one of the twin screw impellers, this design was pioneered by Skat Trak, would help your situation at cruising speed. Everyone who has installed the twin screw impellers has reported an elimination of cavitation at cruising / towing / wake boarding speed which is where a lot of the noise is coming from, you can feel it in your feet. The twin screw impellers are expensive but I’d rather spend the $1000-$1200 on an impeller than a sound system. The other benefits of the twin screw impellers are the increase in overall performance such as much less speed drop off when cornering and the boat being much more planted or hooked up at speed, and better mpg.
One of THE, if not THE best improvements you can make to one of these jet boats is tuned impeller or impellers, I have two sets of tuned OEM impellers and I will tell you the difference between stock and the tuned impellers is amazing.
Solas’ proven Concord design impeller in a twin impeller design is a super upgrade for some late model Yamaha Jet Boats. The stainless-steel Twin Concord impeller for the 195, 255 and 275 models paired with our Jet Boat pitch recipe is recipe for success! The YV-TP Twin Concord impeller fits...
impros.com
You want the most amazing hook up possible for your supercharged 195 Yamaha jet boat? How about finally being able to maintain surf speeds without cavitation? This twin impeller, featuring an inducer impeller feeding the main drive will improve your pump's efficiency beyond what any single...
leadingedgeimpellers.com
This is
@anmut ’s review of the twin screw impellers, he notes a much lower pitch in sound and he picked up .3mpg.
The clean out tray and plugs;
It makes sense there would be pressure / more pressure with an inducer impeller ahead of the main impeller.
Do you have the tray sealed around the perimeter?
I realize the water was or may have been above the mechanical access hatch?
Do you have the hatch riser?
Are the clean out plug seals in good shape? I see your boat is a 2020 model, have you replaced the seals yet? Do you put any wax on the seals?
It sounds as if the drain line could have been clogged, and yes the water will still drain out of the clean out tub if the lower drain is below water, maybe...
And here’s another thread on the subject
Just ordered a twin setup for my sx190 from impros and wanted to see if anyone had any experience running one of these? I primarily want to pull tubers and cruise with adults.
Have a close look at your impeller, the edges should be smooth and without dings. The gap between the impeller and the wear ring should be between .014”-.0177”. If there are dings in the impeller blade or the gap is larger than .0177” then fixing that will improve noise and performance. The wear ring should not have any deep grooves either, some small surface scratching is not an issue, but if your finger nail will grab in a groove the wear ring should be replaced.
