Page 2 of 2
Re: JL Stereo System Install
Posted: Tue Jul 14, 2020 4:06 pm
by AsLan7
DockRocker wrote: Tue Jul 14, 2020 3:45 pm
It does stick out about a quarter inch on each side below the hull. I am keeping a close watch on it for now. The lights are offset, so I could remove the Y fitting and just use one of the offset Diablo Royale lights if I think that would be better, safer. Right now, I'm leaving both lights and the Y fitting in.
.
Yes....be careful with that. We hit a submerged something last week (some type of wood) and it went way up into our pitot tube on the outdrive. Had to dig (actually drill) fairly deep to get it out. Heard it hit the bottom of the hull and then the outdrive cruising at about 35mph. It would have torn that LED light right off. Fortunately ours does not hang down. One in a million shot doc.
.
Re: JL Stereo System Install
Posted: Tue Jul 14, 2020 9:29 pm
by Big Block Power
I like it very nice. Did I see led ss cup holders?
Re: JL Stereo System Install
Posted: Tue Jul 14, 2020 9:30 pm
by Big Block Power
Guys we have another target!!!
Re: JL Stereo System Install
Posted: Wed Jul 15, 2020 9:10 am
by DockRocker
Big Block Power wrote: Tue Jul 14, 2020 9:29 pm
I like it very nice. Did I see led ss cup holders?
Thank you BBP! No Cupholder LED's yet. I do have Blue LED interior bulbs and Blue LED engine compartment bulbs. I did buy Wetsounds LED Strip lighting, but I have not installed any of that yet. I was thinking about installing the Wetsounds LED strip lighting above the cupholdes, not sure yet.
Re: JL Stereo System Install
Posted: Wed Jul 15, 2020 10:24 am
by Big Block Power
DockRocker wrote: Wed Jul 15, 2020 9:10 am
Big Block Power wrote: Tue Jul 14, 2020 9:29 pm
I like it very nice. Did I see led ss cup holders?
Thank you BBP! No Cupholder LED's yet. I do have Blue LED interior bulbs and Blue LED engine compartment bulbs. I did buy Wetsounds LED Strip lighting, but I have not installed any of that yet. I was thinking about installing the Wetsounds LED strip lighting above the cupholdes, not sure yet.
Ok I'll give you half a pass just for the thought you put in
Re: JL Stereo System Install
Posted: Tue May 26, 2026 1:33 pm
by blakeeasley
@DockRocker
Old thread here, but firstly that is a clean install!
Second, I'm wondering if your JL Audio M6 IB sub caused any rattle in the console, hull, etc.
I've also got a 2008 Cobalt 222, and the only part of my sound system I have to complete is the sub. I'm back and forth between an infinite baffle style setup versus a sealed enclosure in one of the bow storage areas.
My current setup is as follows. The only parts I kept from the previous owner's setup are the Kicker 6.5" speakers. I installed a Garmin Fusion head unit, JL Audio M6 8.8" tower speakers, JL Audio M400/4 for tower speakers, Wet Sounds HTX-6 for Kicker components, and all new marine grade speaker wire.
I have a Sundown Audio E-10 v.3 D4 10" sub (w/ ported box) on my other boat. For testing purposes, I installed this sub in the port-side front storage of the Cobalt with a JL Audio M200/2. It sounds great, but it rattles a lot - both in the console and the side of the hull. I'm just not sure how much of this rattle is from that being a ported box and how much would rattle even with a sealed box or IB setup.
Thanks for any information and direction. And again, great job on your setup!
Re: JL Stereo System Install
Posted: Tue May 26, 2026 3:04 pm
by jhnmdahl
blakeeasley wrote: Tue May 26, 2026 1:33 pm
@DockRocker
Old thread here, but firstly that is a clean install!
Second, I'm wondering if your JL Audio M6 IB sub caused any rattle in the console, hull, etc.
I've also got a 2008 Cobalt 222, and the only part of my sound system I have to complete is the sub. I'm back and forth between an infinite baffle style setup versus a sealed enclosure in one of the bow storage areas.
My current setup is as follows. The only parts I kept from the previous owner's setup are the Kicker 6.5" speakers. I installed a Garmin Fusion head unit, JL Audio M6 8.8" tower speakers, JL Audio M400/4 for tower speakers, Wet Sounds HTX-6 for Kicker components, and all new marine grade speaker wire.
I have a Sundown Audio E-10 v.3 D4 10" sub (w/ ported box) on my other boat. For testing purposes, I installed this sub in the port-side front storage of the Cobalt with a JL Audio M200/2. It sounds great, but it rattles a lot - both in the console and the side of the hull. I'm just not sure how much of this rattle is from that being a ported box and how much would rattle even with a sealed box or IB setup.
Thanks for any information and direction. And again, great job on your setup!
I'd see if the box rattles on its own first - run it sitting on a cushioned seat or something. If it's not the box or something mounted to it, I'd look at the installation - is there any place that isn't rock solid or isn't damped? Maybe use some type of gasket (or even a cloth) between the enclosure and the boat to make sure it's not the install. I think you'll probably get better sound using a box than an infinite baffle install, but the infinite baffle is quick and easy relatively speaking which is why you typically see higher Qts specs for marine subs.
Not sure how you're exposing the speaker and port to free air with the box installed in the storage space, but a photo might help understand what you're working with.
Re: JL Stereo System Install
Posted: Wed May 27, 2026 9:57 am
by NautiGirl
blakeeasley wrote: Tue May 26, 2026 1:33 pm
@DockRocker
Old thread here, but firstly that is a clean install!
Second, I'm wondering if your JL Audio M6 IB sub caused any rattle in the console, hull, etc.
I've also got a 2008 Cobalt 222, and the only part of my sound system I have to complete is the sub. I'm back and forth between an infinite baffle style setup versus a sealed enclosure in one of the bow storage areas.
My current setup is as follows. The only parts I kept from the previous owner's setup are the Kicker 6.5" speakers. I installed a Garmin Fusion head unit, JL Audio M6 8.8" tower speakers, JL Audio M400/4 for tower speakers, Wet Sounds HTX-6 for Kicker components, and all new marine grade speaker wire.
I have a Sundown Audio E-10 v.3 D4 10" sub (w/ ported box) on my other boat. For testing purposes, I installed this sub in the port-side front storage of the Cobalt with a JL Audio M200/2. It sounds great, but it rattles a lot - both in the console and the side of the hull. I'm just not sure how much of this rattle is from that being a ported box and how much would rattle even with a sealed box or IB setup.
Thanks for any information and direction. And again, great job on your setup!
So maybe in a unique place to help. We had a 222 that I put a full JL stereo in, and we now own an R5 that i put a M6 Sub in.
I would 100% do Infinite baffle instead of a box, mostly b/c the Box just takes up so much storage space.
The factory sub location in the 222 is good, I put a M3 Sub getting about 200w there and didnt really have any rattles. I will say to fit a M6 you will for sure need a spacer ring. The M3 needed a ring and the M6 is even deeper. I think I had a 1/2in starboard ring to make it fit.
We recently added 2 M6 10s off a M600/1 in our R5, it will shake the ice in the cooler, but it hasn't caused any issues shaking parts of the boat.
Not sure this helps, but let me know if you need any other info or pics.
Re: JL Stereo System Install
Posted: Thu Jun 04, 2026 8:14 pm
by blakeeasley
Thank you for the information.
The main rattling was inside the console. Not sure if it's loose wires, loose screws, or something else. I did a bass frequency test, and most of the rattle is in the 30-50Hz range, so pretty deep bass.
I ended up getting a sealed down-firing box with a Kicker 12" Comp subwoofer (attached). I plan to go out to the boat slip this weekend to install and test. I'm hopeful that I'll have less rattling now being that I'll be (1) going from ported to sealed, (2) directing the energy downward as opposed to into the console, and (3) physically securing the sub box to the floor.
I did notice that a decent amount of the rattle was also coming from the bow walk-thru door, specifically the slide bolt barrel latches. I'm not sure if there are plastic/nylon bushings available for these to prevent the metal-to-metal contact, but I can always just wrap some white or gray electrical tape around the "bolt" portion of the lock to dampen the sound.
I'll report back once I get everything tested. Thanks again, y'all!
