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should I go ported or sealed? I know it is my choice based on what I like...and honestly I like both (I have had two ported and 2 sealed set-ups in my current ride).

There are just pros and cons to both for me:

Sealed

- Pros-
smoother base from 20-80 hrtz.
can be crossover a little higher so that my mids do less.
box half the size, so I can use my trunk.
Easier to install, and remove when I need the whole trunk.

-cons-
potentially less bass output
can't tweek freaquency to my liking

Ported

-Pros-
Deeeeeep bass.
louder at lower frequencies.

-Cons-
can lose some upper range output.
Box BARELY fits in my trunk, and I always scratch something (ie; the bumper).
impossible to get to spare.
impossible to get to where I put my fuse if it blows (which it did once).
hard to adjust amps, because they are hard to get to with the big box.


You be the judge, and also add to my Pros and Cons.
Kepp in mind though that I want to use a box that I already have, which both fit the specifications of the sizes for my subs.

 
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it also depends alot on what speakers you got and what frequency you wanting to play

 
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For the Shivas I reckon. What happened to the clamshell? What about.. just one ported? I know you like the bass, but I'm sure you'll get use to it. I'm slightly in your position, but in the order of one Shiva. I really need to regain trunk space, i just have one shiva in 1.8 cubes sealed, but need even more space. Thinking about going clamshell. how did it go for you? sorry, i lost track of what the thread was about.

 
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im personally a huge sealed fan. thats just me though...

 
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it's your b-day? it is now

when ported boxes get massive, they quickly lose their allure to me. depends some on the sub, but for the daily driver i'd take sealed

 
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Just to clarify, the subs are gonna be two ID Maxes either in 1.4 per chamber sealed box, or two is a ported box with a shared volume of about 5 cubes.

 
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seal that sucker, i would rather have it ported but you will save alot of room in a car that doesn't have too much room.... im going to vote for ur birthday... haha

 
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Just my opinion but I like sealed alot better. and yeah you will save alot of room .

 
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sealed is the way to go . you just have to know how to build the box per which subs you end up gettng. also with a sealed enclosure you gain a lot of sq and only have minor spl losses usually only 5-9 points. it will sound cleaner. most of all your subs will last longer and if you install them with back end in the box you will not hear your voice coil as much if you blow them. also wiring the subs in par or series effects the sound too.

 
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Just curious how?



hey yall, i didn't set-up the poll for nothin...is anyone actually gonna vote?

 
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i voted for your b-day. sorry. that's democracy though ;D

 
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when you wire the subs in series you lessen the resistance of the sub ie a 4 ohm per vc sub will only run at 4 or (2 ohms if 2 are conexted per monoblock) and in par you will run at 8 or (4 if 2 are connected to the monoblock) in series wiring both voice coils are making sound, so you can get more power and impact, but risk frying the vc's faster, in par the vc's act together as one big one so you get cleaner sound but less impact, but the subs will last longer usually.

 
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Go ported custom and ditch the back seat. The weight distribution is better & you still have some trunk & easy spare access.

If your gonna throw a big box in your trunk go bandpass!

 
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I have no idea what the hell you are saying. Try using punctuation. .....

I can say that wiring in no way affects a speakers sound. The only thing it will affect is the way an amplifier behaves. Wiring speakers so the amp sees a smaller ohm load will generally cause the amp to put out more power but at the cost of a high distortion level.

The greater the resistance of the speaker, the greater the damping. High damping helps the amp move the speaker more accurately. The trade off is you generally need an amp that puts out the right amount of power at that higher resistance.

All of this I am sure he knows ..... which is why he called you on it in the first place. Not many catch his sarcasm most times ....

 
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Thats funny.

Do you really think he'd put in his new ID Max's into a bandpass?

 
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damn joe, your killin people tonight!!!

Honestly, I was not being sarcastic about the series vs. parallel (sp) thing...i figured that he was wrong, but i wanted to hear his explaination. Also, i have noticed that when some companies list the sensitivity of sub model that it may be slightly different dependending on if it is wired in series or parallel ...so i always wondered.

See page 12 of this link for an example

 
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well yeah it's more sensitive. 6dB if it's a dual 4 ohm sub. here's why.

2 4 ohm coils in series = 8 ohms. Let's give in 10 volts. that gives us a current of 1.25A. Thus power is 12.5W (V*I). Follow?

Now wire those same coils in parallel. You get 2 ohms. Give them the same 10V, and your current is 5 amps. This means power is 50W.

What do dB's mean? well if it's 3 dB higher, it has twice the power. 12.5 * 2 = 25W, 25W * 2 = 50W.

THIS IS WHY PARALLEL WIRING HAS HIGHER SENSITIVITY. All it says is given the same voltage source one will move faster. JL amps are something of a voltage source btwn 1.5 and 4 ohms, but most aren't.

and with fonto having the 4 door, i'm guessing he wants the backseat.

 
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I don't have a 4-door, but thanks for the breakdown.

I still need the back seat for my son.

 
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I will reply one more time and then I am done w/ this thread. I guess what is getting to me is all the incorrect statements that is written and people don't even realize. These discussions can get rather technical, so proper terminology is crucial to the discussion.

Wiring does not affect the resistance of the sub. It affects the overall resistance the amp sees. As long as the amp is stable at that percieved resistance everything is fine. There is no greater chance of frying voice coils and all that. Neither parallel or series wiring makes a sub last longer than the other either.

Likewise wiring does not affect sensitivity. Sensitivity is fixed and can not be changed. Wiring affects the overall resistance the amp sees. This will in turn cause the amp to output more or less power for a given input voltage.

 
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Exactly RegularJoe!

 
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i fell sorry for mikes son, his son is going to be deaf by the time he turns 18... hahaha

i bet when he gets a car, his son is goign to compeate to have a better system...

 
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LOL...that is why i have comps only in the front...bass doesn't bother him, plus I turn down the bass when he is in the car, but a lil bass usually puts him asleep. High pitched sounds are what really bother him.

 
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drop the holier than thou **** please. thou has sinned

there are 2 kinds of sensitivity. one is the kind measured 1m away with 1W of power to the sub (in crazy lab conditions we could hardly hope to reproduce), the SPL kind. THIS IS FIXED, so on this i agree. you can give 2 subs 1W of power and compare them.

but what about the kind of sensitivity measured usually by 2.83V rms? the electrical kind (might be called wiring sensitivity, i forget the name). THIS IS NOT FIXED. if it is, please email the nice folks at orion and tell them to pull their freaking heads out of their collective ASSES. why the hell would they list different sensitivities at different impedences IF THEY DIDN'T EXIST? look at page 12 of the thread fonto was asking about, same ****, adire must be choking on the BS flowing from their mouthes.

i'm not saying you don't know plenty. and i respect that. maybe you just missinterpreted what i said as backing up the parallel wiring = shorter sub lifespan thing (which it doesn't). and wiring in itself doesn't make a sub louder or quieter. but don't tell me it's not more sensitive to the same input voltage.

i haven't been called out in a while, much aggression penned up

 
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first off when you say "distortion level" thats a difference in sound. you are talking to someone that has his mecp certification as a pro/advanced installer, so don't try to call my bs on something as easy as wiring effecting sound.

thanks for caring.

 
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...so, uhhhh, ported or sealed guys. What do you prefer?

 
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sir, im not on either side of it, my **** bashing days are kinda over, but i do have one thing to say. Dont prove your knowledge based on the MECP. I have it, Ive taken it, and monkeys could pass that test... there is VERY LITTLE involved with acoustical theory on that test.
If youd like to get deep down into some physics with me and a few other members on this site, we'll be glad to hand you your ***

 
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Sealed.

 
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oh, and back on topic, fonto, you have the perfect box for sealed idmaxes if you invert, so try it that way. if you need more output, then port.
remember though, the shiva is the 12" low end king in my book, so be prepared to lose that uber low end.

 
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Very true about the low end (especially with the set-up that I had). The Shiva weakness was the upper bass in my opinion, and hopefully the Maxes will sound better there.

Oh, and you think inverted will be the best way to go...I just worry that the speakers are so big and heavy that they will fall out. What about not inverted...how do you think they will perform?

BTW, I got the freckin Subs today!!!!! Ye--muthaaaa-****iiiiin-HHHHAaaaaa!!!!!

Also, BTW, is anyone gonna actually use the poll that I took 15 secounds out of my life to create??!!

 
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I feel like the biggest DUMBASS EVER!!!!! I just figured out that I had to vote on my own poll in order to see the results