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It started with a 12" atomic apocalypse in a 2.5cube box tuned 45hz on a rockford prime 1200.1, then i whet to a single 12" dd 712 2.5 cube box tuned to 42hz on a powerbass asa 1500.1, then to a double sundown sa 10 in a 2.5 cube box tuned to 40hz on a deaf bounce 2000.1. Each time boxes were built over, electrical is a 140amp alt, xs d 1200 infront and xp 3000 in rear, nvx 0 gauge ofc wire for runs and big three. I put my subs in a feilder and it was night and day difference on less power, i took the single 12 sub from the fielder and put it in the hatch on more power and it sounded softer. I also tried sub and port facing forward, up, rear, even presently the both sa10 face up with port back with same issue.88sins wrote:Could be a leaky enclosure issue but it would be hard to tell what the problem really is without seeing the actual installation in person.
Subs require that sufficient air volume be available for displacement in order to achieve maximum loudness and depth, both inside the enclosures well as inside the vehicle. Generally speaking, the bigger the subwoofer, the more volume it will need inside the vehicle, and a hatchback doesn't have that much volume. I've seen a 8's outperform 12's because of the lack of available air for displacement.
what size subs are you using? as well as make and model and power driving them?
whats the design & specs of the enclosure you're using currently with the subs?
how does it sound with the trunk partially and fully open as opposed to closed?
can you remove the rear seat back rest and aim the subs into the cabin to see if that makes a difference?
can you borrow a sub and enclosure that performs the way you want and place it in your vehicles trunk to see if it sounds good or if it sounds similar to yours?
Deck is a 80prs...all gains were set using the dd1. Thats why it strange to me, the only think i could possibly think of is something with the trunk itself. It rattles alot and bass just doesnt seem to travel out of the car. Inside sounds great but from outside it sounds as if everything is compacted inside. There is not pre amp, just cross over set on deck, and gains on amp...The wheel well has some holes and apparently the spaces where the back shocks are is leaking air... alot air comes through there when the sub is playing, not sure if that could be the problem88sins wrote:well if you switched enclosures and the new box still sound anemic in yours, and your box sounds good in the other vehicle, it's not the box. it not sounding like an electrical power feeding problem either. 0 awg cable will allow for nuff current.
checked the stereo bass settings? did you check that the gains on the amp and preamp adjusted correctly?
i hate these kinda issues, but sometimes the simple things are the cause of these headaches. i say start from the power source & the deck and work your way back.
Its not leaks in the box...its leaks in the hatchback itself....its a bit rusty, has some holes and spaces in the trunk(wheel well ect..where the arrows point is where alot of air comes out when the sub..standing next to the car from outside you can feel air being forced through there88sins wrote:fix all the leaks first, then check. but that's odd, because those leaks would affect performance regardless of what vehicle the box is in.
Lol. But those leaks are the problem?fatboy slim wrote:or buy a fielder
Jeremy09 wrote:Lol. But those leaks are the problem?fatboy slim wrote:or buy a fielder
Like all them forums online when you google it88sins wrote:who is this everybody that says that
one thing ppl tend to not play attention to, placement and acoustics are really important. a speaker can sound like crap in one location of a vehicle, and sound amazing in another location not for from where it initially was.
Thanks. I inboxed youL'Audi wrote:Subs up, port up and make a baffle that seals off your subs from the trunk (so the look like they're sitting on a rear deck). You're welcome.
fatboy slim wrote:you may need to stop those leaks (some metal sheeting work required ) and dynamat the trunk
Jeremy09 wrote:It was kicks when my cousin who had 1 10" on a boss 750 with 4 gauge wire, stock alt and ah single small water battery sounded the same as me when i had the 712 on the powerbass 1500.1 with my electrical upgraded.
Jeremy09 wrote: All the equipment i had, it just seem like the sound doesn't travel out the vehicle well. Not sure if is the car but everybody keep saying hatchback is for music
DJ Q wrote:I had this same phenomenon happen when I had my Rover.
Thousands of watts and nothing was traveling outside of the car.
And I was told the same thing that these hatchbacks were great for bass.
I had 2,000 RMS in bass, 0 AWG wiring, proper eletrical, no rattles... all the good stuff.
In my current car, I'm using one 5 channel amp and only about 200RMS is on the subwoofer and I'm vibrating everything around me.
It's weird
DJ Q wrote:Nope. Just had to accept it.
No matter what I did or how much power I used, sound hardly ever escaped the car.
Tried this. Not much of a difference...back seat down, up. Sub and port up,sub and port back even sub up port back. No big change beside rattles in trunk88sins wrote:DJ Q wrote:Nope. Just had to accept it.
No matter what I did or how much power I used, sound hardly ever escaped the car.
Did you try it while the back seat was out of the vehicle aiming the subs into the cabin of the car while the box remains in the boot? basically using the entire air space inside cabin as air space available for displacement. if you haven't, not try it and see what happens. if it improves that means there's just not enough air available for displacement in the trunk with the sub enclosure in there.
and if that's the case you have a few options. more efficient subs in smaller enclosures, or sacrifice the back seat for bass
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