MORE BASS?!? New/Different Sub Location on G21?

[JOPETE1]

I would like to know if anyone out there has installed a sub somewhere other than the main storage locker location... Anyone?

I had the dealer move my sub from the standard location to a stand-alone box when I bought the boat (because I heard that helped a lot), but it's still located in the same enclosed locker and it seems to really limit that volume of the bass being enclosed in the locker. I've heard of people cutting vents in that locker to 'let the bass out', but I'm not too excited to do that (unless maybe someone has some pics of it done well?).

Anyone find a more 'open' place to mount another sub? I was curious if anyone installed a sub below the dash in the driver floorboard...

I'm simply looking for more/bigger BASS. I had two bumping subs in my old Supra, and I miss that powerful bass with the G21.

Thanks!

[MLA]

unless maybe someone has some pics of it done well?

Lost of them here, even a dedicated thread to woofer vents

I was curious if anyone installed a sub below the dash in the driver floorboard.

Not enough room for even an 8" woofer on a 23 or 25, is the 21 helm design different? Unless you are referring to the spot thats covered with the sea deck material?

[JOPETE1]

Thanks for the pointer to the vent posts... I'll take a closer look at what people have done. Yes, I was thinking the sloping floor with the sea deck material... Not ideal as you'd have to have a very strong grill to protect the sub... Just an idea (maybe a bad one)...

[markj]

Start cutting. You have no choice with Nautique if you want it to resonate. I tried to go without a big vent last year after adding 2-12" subs (just took the garbage door off) and all it did was shake the heck out of my boat. Audible bass was difficult to hear. Anything in the cup holders became an even bigger rattle trap. There's no way to get it out unless you cut. I'm about to have my installer start whackin. I'll post my results.

[David Analog]

Also, if you don't vent the observers compartment then without a better path for the bass pressure to flow, the coaxials down the port side of the boat become the lowest resistive path, and are modulated by the bass = nasty ill-phased and midrange distortion.

[markj]

My question is where to start cutting first. My installer wants to cut a large opening in the walk through. I agree, but I wonder if the only person hearing the bass will be the driver. I wonder if cutting under the observer's foot area will have a negative effect once the walk through has been cut. I don't think cutting the observer's foot area alone will be enough by itself with two 12's and over 1000 watts RMS. Maybe David or MLA has an opinion.

[Cpan13]

http://m.ebay.com/itm/NAUTIQUE-SUB-W....c100408.m2460

Cut 2 of these in. Problem solved.

[MLA]

A nice large walkway vent can be done and look nice, if one is willing to lose the trash can. Really works well when you have the enclosure loaded up close to the vent. For an under seat vent, you would likely want two small or one large, for two 12" woofers in the locker.

[markj]

http://m.ebay.com/itm/NAUTIQUE-SUB-W....c100408.m2460

Cut 2 of these in. Problem solved.

Problem with those is if you add up the square inches of actual open area, there's not much ventilation there. They look cool and all, but I'm after function just as much as form. Just my opinion.

[markj]

A nice large walkway vent can be done and look nice, if one is willing to lose the trash can. Really works well when you have the enclosure loaded up close to the vent. For an under seat vent, you would likely want two small or one large, for two 12" woofers in the locker.

What are your thoughts on doing both in a 230? Overkill? Do you see any issues with things cancelling out with holes in different areas on different planes? Have you done it before?

[cedarcreek216]

I don't have two 12's, but next week I'll have my trash can door vented to add vent area to the existing side wall vent. Even for what I have, the small amount of area you get on the side wall is not near enough. No reason they would cancel each other out, it's just letting the sound in a confined space out.


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[nyryan2001]

Vents as discussed ^^^^

+ a 15" Fi Audio IB3 on 1000w in the stock 10" location.

[David Analog]

You have an imperfect scenario with a subwoofer in the port locker and there is no perfect solution. Bass radiation, as applied to the range covered by a subwoofer, is only slightly directional as it is propagated and as it is perceived. You'll never get enough vent surface area to completely nullify the port locker, unless coming close by leaving the seat wide open. The best vent location is closest to the sole in a forward corner of the cockpit. But, this offers less vent surface area. The pass-thru vent offers more surface area. However, the location is higher and outside of the cockpit boundary, which means the bass energy is more free to radiate and dissipate outside of and away from the area of perception. Balancing the plus and minus, with dual 12"s, I would run two vents. And there are other impactful techniques besides vents, such as closing off adjoining cavities and/or the use of a manifold that removes the locker displacement.

[markj]

Manifold? You mean a port? Please explain.

[David Analog]

Manifold? You mean a port? Please explain.

Like a reverse horn. Couples the output and large surface area of the woofer(s) directly to the smaller surface area of a vent. Must be of an abbreviated length in order to not create a sonic signature of its own.