Im a dumbazz when it comes to car audio but just a question? Whats the difference between a ported sub and a non ported sub?

a port sub needs a box which has a port (hole)

difference between a ported sub and a non ported sub?

As said in previous post, ported subwoofer box has holes in them (not just drilled holes, but, hell just google.com it) and non-ported subs do not have holes, and they're actually called "sealed" subwoofer boxes.

There are many enclosures starting from first order enclosures (free air / infinite baffle) all the way down to nth order bandpasses That involve more intricate port and divides.

A sealed box is simply a sealed box with a sub in it. These are simple to make, forgiving with box volume and will generally give a good fairly flat response, So suits most music at the expense of being less efficient.

Ported boxes on the other hand are much more efficient and are 'tuned' to a certain frequency. The port takes advantage of the backwave from the sub, delaying it long enough to come in phase with the front wave hence increasing the output potential. Basically ported = louder, but the bass from this wont be as accurate or tight as a sealed box.

A ported box made to the right specs can sound as good as a sealed box, buit generally if you dont have a pro to make it or cant understand the basics behind tuning your port your best bet is sealed if the only application is for music. If you want to get loud then your best bet is ported.



Peace

Tim

A question: I have this sub (pic below) and i had alot of problems when i was getting it installed by Strathfield. They stuffed me around 4 times and im not happy now with how they installed it the last time but when its been 2 weeks since it was installed the 4th time so there is nothing i can do about it now. When i went into Strathfield and got the 12" i asked them what kind of amp i would need to power it 200w 6"x9" and the sub and the guy told me it was better to get an amp just for the sub so it didn't have to share the power. So he told me to get a 200w sony amp for a 1000W sub? Neway so i thought he knew what he was talking about it. So they installed it and there was no bass whatsoever so i told them i wasn't happy so they said they would put the 6x9's off the 200w Sony amp and put the sub on my 800w Boss amp which i had the 6x9's and the 10" sub which i was upgrading from. and once they installed it it sounded worse then my 10" Sub. When we picked it up the after the 3rd installation i was at work so my mum and bro dealt with it and the manager helped them out. There was static coming through aswell and he said it was because of the Boss amp being turned up so high to put the max power to the sub and stuff. He told my mum and bro that i should get the 6 channel 560W JBL amp to power my front splits, 6x9's and the Sub and mum rang me at work to see if that was ok so i agreed because i was busy at work so i couldn't stay on the fone all day. Anyway....now there is power going to the sub but when i turn it up loud it seems to be muffled bass and doesn't come out as clear as when it is on a lower volume. Also there is soo much power going through my splits that i have to turn em down to hear the bass? I payed just over $900 and it was a HUGE WASTE of my money and.......!
How would u guys reccommended that i set up my sound system comprising of: 6" front splits, 200w 6"x9" in rear and 1000W Pioneer Sub?
Its too late now anyway but what should amp should strathfield told me to get and how should they of installed it?

whats the rms rating of the sub?

I'll assume 1000 w is peak which is irrelevent.

i am definately not an expert but it seems to me that the first amp was definatley underpowered. the boss was just a crappy amp and thats why it sounded bad. Maybe it sounded worse tan the 10" because it is less efficient, dunno, just guessing.

the third amp seems underpowered too 560W over five channels doesnt leave much for each driver (i am assuming that its peak not RMS).

Can you take the JBL amp back?

If i were you i would get the monoblock jaycar amp to run our sub. keep running the rest off the boss, or get the 4x50 (or 4x100) jaycar amp for that too. I would also stear clear of strathfield from now on.

If i wasn't at work i coulda got it all cleared up....the thing that gets me is that they unhooked my front splits which were running off the deck and changed em to my boss amp with the 6x9 and put the sub on the 200 w amp? I didn't ask them to touch the front ones? I dunno if i could take it back now. Its been 2 weeks now! i have gone through Strathfield with my 2 previous cars and my bro has done the same and they have been great. Not this time though...i was skrewed around and wasted $900!

This is the website that has all the details of the Sub!
Just so i don't confuse anyone my front splits, rear 6x9's and Pioneer sub are all running off a 560W 6 channel JBL amp! There are different things on the amp where i can turn it to HP and LP and FLAT for the front splits and back 6x9? Should i change any of that?

http://www.pioneeraus.com.au/car_entertainment/subwoofers/306cbox/index.html#anch_0

Im a dumbazz when it comes to car audio but just a question? Whats the difference between a ported sub and a non ported sub?

Not to mention ported sub boxes are generally larger in size and sealed subs generally need bigger amps to push them harder.

Strathfield give great advise, asked a guy what I should run my 450W G5 off and he said this fully sick 1200W boss 2 channel. His words where that should be way to much power so be careful. I laughed. Went to JB and they had never heard of Boston :bowrofl:

Sounds like everything is ok, dont stress. My advise would be:
Ditch the boss amp.
Use the sony to power the 6x9's.
Bridge the 6 burner and make it a 3 burner with ch 1 & 2 power 1 front and 3 & 4 doing the other with 5 & 6 powering the sub. This is where tuning plays a vital role. There will be a truck load of power to your front stage now but remember power = control. Tune you system correctly and it should sound sweet.

First turn all the gains right down.
Turn the volume up to about 3/4 of max on your headunit.
Adjust the front stage with your gains on the amp, dont go ballistic. If you hear them disorting turn the gain down a little.
Do the rears so you can hear them but so they are not overpowering the front.
Lastly do the sub, if you want to do it by un-plugging the RCA's so it is the only one working you can.

Good luck.

stratty are full of crap, they always try and sell you boss equipment,

strathfield are full of idiots

i said which one out of the pioneer TSW306C and the JBL GTO 1202D would you prefer.

his answer was short and simple

"i like MTX bro"


*** NOOB I ASKED ABOUT THESE SUBS U MORON GO BACK TO UR FULY SIK VL OMFG W**KER

i like hifisupermarket, very helpful indeed, are only to good to offer advice, and very nice poeple to have a chat with

sorry to hijack the thread

"]i said which one out of the pioneer TSW306C and the JBL GTO 1202D would you prefer.

his answer was short and simple

"i like MTX bro"

:bowrofl: :bowrofl:

I was about to state straithfield are a crap electronic retailer stocking extremly average hear for afew bob. Didn't have an example that hillarious though!

STrathfield have Good gear but dont ask for Advise or get them to install...

JB only get in some good Brands like JL and Cadence.. They usually have Back yard installers who do actually know what they are on about..

Always go for Non Chained Stores, they have to get a customer Base based on service and Product knowledge or they go bust , unlike Commercial Stores..

Seriously, genoCide, after me and my mate heard that, we walked out the store laughing, basically the car audio department consisted of 3 or 4 built wogs (no im not being rascist here) who strutted around, and gave no advice.

then when i asked about the JBL 6*9 series....he just said, yeah, there good......gee thanks man i think ill blow $180 on them cause you said they were good.

the local JB HI-FI is so packed, its not funny, so i dont really bother asking anyone for assistance, as they all look like ants running around, i just wish i had 1 non chain car audio shop in sunshine/maribynong :doubt:

im really sorry for hi jacking the thread once again, just wanted to plop that in :)

bye bye

JB only get in some good Brands like JL and Cadence.. They usually have Back yard installers who do actually know what they are on about..


What are you joking? JB Hi-Fi installers place cross-overs inside the doors. Hell, they didn't even protect it with any plastic wrap or nothing.

I installed mine in the Doors and have had no worries..
Reputable Brands water proof the casings on their Cross overs any way as this is where they are most likely to be installed...

My JL Audio splits were installed by JB HiFi, the crossovers were placed inside the door when it clearly stated on the installation manual "Do not place crossovers inside the door". I went back and explained this to the installer and he said that there was nothing to worry about, pfft, except for the fact that there was water all over it - whether waterproof or not, I'd appreciate it if these installers who charge ~$80 to install splits to follow what the guide says.

In the end, I just went to a professional car audio installer and all he did was point out everything wrong that JB Hifi did, he fixed it all up for me for a damn reasonable price to help me out.

I would avoid JB HiFi installers at all cost, not just because of this one time but I've heard many other reports of there installers. One installer was smoking next to the vehicle he was working on, that's unacceptable. By all means, if you're going to smoke do it away from the vehicle.

Just my opinion, I'm sure many would be happy with JB Hifi installations, but I am not.

I should re phrase that, the Sales people know more, the installers are Back Yard...

Yeah, the problem with all of those type of places is that they make there money off selling the products with the mark-up. You go elsewhere and they make there money off the labouring, so they don't try and force a sale down your throat.

"If you want it, you're going to buy it". (I just made that quote up, sounds good but). :-)