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subwoofer box

grand2000prixgtp

grand2000prixgtp

New member
i am looking into making my own sub box and i want to put it in the back right Corner of the trunk. i was wondering if any one has done this?
 


Pie


Thats about how much info I have to work with.

I want a pie.... but i'll never tell you what kind.. or how much...
 
i want it to be like this. just wondering if anyone knows how to make it
DSCN0613.jpg
 
step one, dont buy a cap

Step two: measure it

step three: cut some MDF and glue it together to fit that space.

Step four: remove the rear 6x9's

step five: bass
 


tell me how quick a thirtieth of a second is because thats how long a cap is good for before it needs to recharge.
 
A cap is very good to have, especially if you're running a high powered system. A capacitor works by using it's stored energy to supply the amp. Say you have a bunch of really fast, heavy notes, it's gonna take a lot of energy to supply that amp. Instead of pulling it all form your car's battery, it takes it from the capacitor making it easier on the battery. Then all the battery has to do is slowly "refill" the capacitor.
 


ZR1Vette09 said:
A cap is very good to have, especially if you're running a high powered system. A capacitor works by using it's stored energy to supply the amp. Say you have a bunch of really fast, heavy notes, it's gonna take a lot of energy to supply that amp. Instead of pulling it all form your car's battery, it takes it from the capacitor making it easier on the battery. Then all the battery has to do is slowly "refill" the capacitor.
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caps are pointless. they drain in one good bass note, and then have to recharge. so your actually using more power because the battery now has to supply the amp and recharge the cap. its a worthless piece of equipment. and as far as the box, your not going to be able to make a box to hold that 15 and have it where you want. that sub needs about 3 cubic feet. just build a box that takes up the whole trunk. you bought a big sub...use it. if you want that small of a box you might as well have bought a 10".
 
kfish said:
caps are pointless. they drain in one good bass note, and then have to recharge. so your actually using more power because the battery now has to supply the amp and recharge the cap. its a worthless piece of equipment. and as far as the box, your not going to be able to make a box to hold that 15 and have it where you want. that sub needs about 3 cubic feet. just build a box that takes up the whole trunk. you bought a big sub...use it. if you want that small of a box you might as well have bought a 10".
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no, that doesn't make any sense. You're saying that the battery has to work double time but it doesn't. The capacitor's job is to LIGHTEN the load on the battery. It's better for the capacitor to take a big hit than your battery.
 
I will say that I've heard good amps don't need a cap because wrms aren't demanding on the battery. Just keep that in mind, basically a capacitor is a cheap alternative to a second battery which I have seen run in high power systems. It also take a lot of power to really suck on your battery juice.
 


Not trying to argue, but a capacitor is useful for something such as a long bass note, but otherwise not too useful (mainly just more wiring, but do have a volt meter).The battery then has to recharge the cap before giving power to the amp. Adding a second battery will increase the amount of time you can listen to the audio system with the engine off(party party:th_biggrin2:). When the engine is running, the secondary battery is an additional "load" for the alternator to charge. So an upgrade to a larger alternator should be considered.
-As stated above your best bet is to pick up some MDF wood, measure it, and hope you took wood shop in highschool...:th_scratchhead:
 
pizzi22 said:
Not trying to argue, but a capacitor is useful for something such as a long bass note, but otherwise not too useful (mainly just more wiring, but do have a volt meter).The battery then has to recharge the cap before giving power to the amp. Adding a second battery will increase the amount of time you can listen to the audio system with the engine off(party party:th_biggrin2:). When the engine is running, the secondary battery is an additional "load" for the alternator to charge. So an upgrade to a larger alternator should be considered.
-As stated above your best bet is to pick up some MDF wood, measure it, and hope you took wood shop in highschool...:th_scratchhead:
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Exactly what i was getting at. I mis-spoke earlier, for a quick fast note, a cap would be drained instantly and then, yes, you will be over-running your battery. With a long steady note (not very heavy) it's not gonna hurt to have a Cap. Honestly, my advice with that would be to wait on it, see if it affects your accessories, and if you need to go ahead and wire one in parallel with the amp (with its own, separate ground of course). Wow, sorry for the thread jack.
 
ZR1Vette09 said:
I will say that I've heard good amps don't need a cap because wrms aren't demanding on the battery. Just keep that in mind, basically a capacitor is a cheap alternative to a second battery which I have seen run in high power systems. It also take a lot of power to really suck on your battery juice.
Click to expand...

If I was still into stereos I would use a second battery like you said. It's easier on your alternator. Or use a higher power alternator or both. Caps are pointless IMO. I left the stereo crowd around '03 when I got into operating heavy equipment, and the last thing I want to hear is noise from speakers. Use a DEEP CYCLE BATTERY and a high power alternator if you want max power flow. Hide the battery if you don't want to see it due to its ugly appearance.
 
if you run a second battery then you definitely need a high output alternator. But why are we talking about this, my friend that was running 2 batteries was rated at 4000 real watts, he NEEDED that extra battery lol
 
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