Confused as hell about subs

[TheIntrepid]

So I have these two JL Audio 12" subwoofers in an enclosure, in my trunk, not connected to anything.

http://img112.imageshack.us/img112/9054/dsc02877my1.th.jpg (http://img112.imageshack.us/my.php?image=dsc02877my1.jpg)



and I need 4 of these air flow thingies for my box, any idea on where I can find these?
http://img157.imageshack.us/img157/4949/dsc02879ji4.th.jpg (http://img157.imageshack.us/my.php?image=dsc02879ji4.jpg)



Is this Dual 600W amp good enough for this? I'm really cheap and it's on sale for $99.99...

http://img234.imageshack.us/img234/729/dsc02876of8.th.jpg (http://img234.imageshack.us/my.php?image=dsc02876of8.jpg)

[TERMINATOR101CA]

Find a local audio shop and let them figure it out for ya .

[TheIntrepid]

Don't know any. Shit on a leash.

[sc.intrepid]

The air flow thingies look to be what we call ports. You could get them online or at your local custom stereo shop.

I'll let those with more current experience speak to the amp.

[TheIntrepid]

The air flow thingies look to be what we call ports. You could get them online or at your local custom stereo shop.

I'll let those with more current experience speak to the amp.

Ports! Yes! Where can I find theM?

[TERMINATOR101CA]

Ports! Yes! Where can I find theM?

Again in an audio shop, LOL......get your yellow pages out man, there has to be one in the GTA.

[Great White]

Air flow thingies?

I do believe you mean ports as mentioned above. They should be built into the box. If it's a sealed box, it won't have the correct volume for a ported box and vice versa. A port is simply an opening in the box that is sized exactly for a certain frequency response. Ported boxes are good for SPL, but not so much for SQ as they sacrifice performance in certain areas for better performance in a narrow band, usually around 39-ish hz. They can sound very good, but you need a very experienced builder to make it work.

You can't just drill a hole and slap them in, it's more involved than that. The box has to be built for the ports. The ports have to be a certain size and depth, even the shape and placement in the box come into play.

Need more info on the amp (ie: rms wattage, thd%, etc) but at 99 bucks, I can't see it being very good.

You get what you pay for.............

[dudley]

Who told you you needed 4 of those???

[TheIntrepid]

Air flow thingies?

I do believe you mean ports as mentioned above. They should be built into the box. If it's a sealed box, it won't have the correct volume for a ported box and vice versa. A port is simply an opening in the box that is sized exactly for a certain frequency response. Ported boxes are good for SPL, but not so much for SQ as they sacrifice performance in certain areas for better performance in a narrow band, usually around 39-ish hz. They can sound very good, but you need a very experienced builder to make it work.

You can't just drill a hole and slap them in, it's more involved than that. The box has to be built for the ports. The ports have to be a certain size and depth, even the shape and placement in the box come into play.

Need more info on the amp (ie: rms wattage, thd%, etc) but at 99 bucks, I can't see it being very good.

You get what you pay for.............

The holes are already there. The guy I bought them from only had TWO ports, so I need two more.

[TheIntrepid]

Who told you you needed 4 of those???

Where I boguht them... the sub box is designed to have 4, he just ran out and said I could come back next month for them when he gets his shipment from AudioBahn.

[Great White]

The holes are already there. The guy I bought them from only had TWO ports, so I need two more.

<throws hands in the air and walks away>

[TheIntrepid]

<throws hands in the air and walks away>

I'm confused. The box has 4 holes in there, shaped correctly for these ports. He only had TWO ports handy so I have to make 2 more.

[cokey11]

Where I boguht them... the sub box is designed to have 4, he just ran out and said I could come back next month for them when he gets his shipment from AudioBahn.

first off, if you put JLs in an audiobahn box with a dual amp...I will be seeing you on your front lawn the next morning!:beatdeadhorse:

[TheIntrepid]

first off, if you put JLs in an audiobahn box with a dual amp...I will be seeing you on your front lawn the next morning!:beatdeadhorse:

Oh I won't buy the dual amp. I could have bought it today but I figured I'd ask for advice before doing it.

[dudley]

Oh I won't buy the dual amp. I could have bought it today but I figured I'd ask for advice before doing it.

The JL 12" subs I have work best in a 1 1/2 cubic foot sealed box per sub Adi. That is per JL Audio web page. What model are they??

[TheIntrepid]

OK I took better pics!

http://img301.imageshack.us/img301/1899/dsc03324xf6.jpg
http://img87.imageshack.us/img87/2231/dsc03323ri7.jpg



And I don't know what model they are! Let's just say I got them very cheap from a very shady source?

[dudley]

I suggest you go back when he has more then. You paid for them just listen to it the way it is. I dont supposed you know the specs huh???

[cokey11]

No Idea!

[TheIntrepid]

I suggest you go back when he has more then. You paid for them just listen to it the way it is. I dont supposed you know the specs huh???

Knowing him, I doubt he'll even have them in a month. They're not hooked up, so I can't "listen to them" as it is... though to test them I plugged them in and they sounded like sh*t without the ports, and when we stuck ports from a floor model in (that he wouldn't give me), they sounded damn good.

[Great White]

That box is waaaaaayyyyy undersized for those subs............especially ported.

Not to mention that's the oddest design box I've ever seen............

Sealed on the back (with plexi as well, not good) of the subs, and ported on the front.........odd..........

Looks like it's more for "bling" than performance.

To each his own.............

[dudley]

Knowing him, I doubt he'll even have them in a month. They're not hooked up, so I can't "listen to them" as it is... though to test them I plugged them in and they sounded like sh*t without the ports, and when we stuck ports from a floor model in (that he wouldn't give me), they sounded damn good.

And you bought them anyway...............

[TheIntrepid]

Well I thought I can find ports anywhere!

[Great White]

I'll try this one more time:

The box is built to match the sub manufacturers requirements.

The ports are sized to the box and the sub manufaturers requirements.

Slapping any old sub, box and port size together is going to sound like crap in the worst case, and will never reach it's full potential in the best case..........

You can't just throw any old sub into any old box and expect it to sound as good as it could. Even cheap crappy drivers can sound good if installed well. Top notch equipment will sound like crap if installed poorly.

The old saying holds true here:

"The best you know is the best you've heard"

[TheIntrepid]

These are non-returnable. What do I do now?

[dudley]

These are non-returnable. What do I do now?

Got ketchup???

[smc1377]

These are non-returnable. What do I do now?

Craigslist. Pass them onto the next schmuck.

[TheIntrepid]

**** my life. Are they absolutely useless?! I can trade them in on "store credit"...

[dudley]

Try to find specs and get the ports you need. But the required amp. You need to visit a audio store.

[ozzy]

That box is a standard band pass box, 1/2 sealed 1/2 ported, they are made to hit hard in a very narrow range.

I had one, and I liked it, the only reason I got rid of it was because I blew a sub and I went for the full Memphis install, Memphis only does sealed or ported boxes.

I like the band pass boxes, they have a flashy look to them

http://www.electronixwarehouse.com/graphics/sgl-prod/boxes/loaded-bandpass/qpower-qbp1206slvr.GIF

[Scooter-Man]

Sounds like the 'Dude' who you bought them thru, won't give you store credit and 'what to do now?' .. you got this speaker box.

As Ozzy says, that's a used band pass box, I say thats been modified. GW also is correct.. Question is, do you want to pull one speaker out, supply the model # and let's go from there.

You might be able to buy a pre-made box that fits your speakers and might fit your car.

Are the subs blown, rattle??

[Great White]

Christ, it's even more tragically undersized if it's a bandpass box................bandpass's are even bigger than ported if built correctly.

Just take your two JBL's and have a decent sealed enclosure built for them.

FYI, just one 12" JBL is going to pound harder than you can imagine if the box is built correctly.

Besides, an amp should be oversized compared to the sub's RMS rating. With 2 twelves, you need a serious amp, and I mean SERIOUS. Even with cheap ass xplod 12-inchers your looking at 300-350 watts RMS each. You'll need an amp capable of 600-ish wats RMS to just drive those, let alone what you'll need for decent set of JBL's.
That just doesn't sound as if it's in your budget judging by the components and..........ahem............"retailers"...............you're looking at.

If an amp is seriously undersized, you can get clipping of the signal, which spells certain smokey death for the drivers............

[ozzy]

For the people out there that think band pass does not look cool, here is a setup with center firing subs in a plexi box using mirrors, cool setup

go to the 53 sec mark and it shows the trunk

YouTube - JL Audio 10W6 Subwoofer Bandpass Box

[TheIntrepid]

Sounds like the 'Dude' who you bought them thru, won't give you store credit and 'what to do now?' .. you got this speaker box.

As Ozzy says, that's a used band pass box, I say thats been modified. GW also is correct.. Question is, do you want to pull one speaker out, supply the model # and let's go from there.

You might be able to buy a pre-made box that fits your speakers and might fit your car.

Are the subs blown, rattle??

Not blown. No rattle.

[Scooter-Man]

That box is no way made for those two subs... Just Flash..

BJ, I'm not a fan of band pass boxes, mainly sealed ones with a lower Qtc and class A/B power.

TheIntrepid, go pull a sub, give a model number.

Late!

[Great White]

That box is no way made for those two subs... Just Flash..

BJ, I'm not a fan of band pass boxes, mainly sealed ones with a lower Qtc and class A/B power.

1. Agree

2. Me neither.............they have thier place though.........just not in my vehicle......

Been there, done that (ported and bandpass), not impressed.

And yes, I know what I'm doing when I build them.

Sealed enclosures from now on for me.

Much better SQ.

[cokey11]

Besides, an amp should be oversized compared to the sub's RMS rating. With 2 twelves, you need a serious amp, and I mean SERIOUS. Even with cheap ass xplod 12-inchers your looking at 300-350 watts RMS each. You'll need an amp capable of 600-ish wats RMS to just drive those, let alone what you'll need for decent set of JBL's.

If an amp is seriously undersized, you can get clipping of the signal, which spells certain smokey death for the drivers............

I'm not sure if you are talking specifically about those subs and that particular box, so mistake me if I critique you the wrong way. I'm running two 12W3v2s off 250 watts rms and can very effectively render my rearview mirror useless at a little more than half volume with sub-levels flat, and don't have any issues with clipping at higher levels either.

[Veeb0rg]

I do not believe those are JL audio subs either. They don't look like the backside of any JL sub i've ever seen

Personally, Sealed is prefered. If you want to put down a loud note for SPL comps then a tuned port is best. Bandpass seem happy in suv's and such but I don't like em.

I've got a set of oldschool 12w6's sittin waiting for me to build something for em. I'm tryin to decide if I want to go SPL or SQ though.

[Great White]

I'm not sure if you are talking specifically about those subs and that particular box, so mistake me if I critique you the wrong way. I'm running two 12W3v2s off 250 watts rms and can very effectively render my rearview mirror useless at a little more than half volume with sub-levels flat, and don't have any issues with clipping at higher levels either.

(response removed, don't want to continue)

[Hypnotiq]

That box is a standard band pass box, 1/2 sealed 1/2 ported, they are made to hit hard in a very narrow range.

I had one, and I liked it, the only reason I got rid of it was because I blew a sub and I went for the full Memphis install, Memphis only does sealed or ported boxes.

I like the band pass boxes, they have a flashy look to them

http://www.electronixwarehouse.com/graphics/sgl-prod/boxes/loaded-bandpass/qpower-qbp1206slvr.GIF

Ewww..

1.) Build a custom box using 3/4" Mdf
2.) Buy a "good" amp ( thats not walmart brand)
3.) Have a professional install it.
4.) Enjoy.

[dudley]

I'm not sure if you are talking specifically about those subs and that particular box, so mistake me if I critique you the wrong way. I'm running two 12W3v2s off 250 watts rms and can very effectively render my rear view mirror useless at a little more than half volume with sub-levels flat, and don't have any issues with clipping at higher levels either.


I agree Shawn
Not sure of the exact model of JL subs but think they are the same, but I have 2 12" JL with a JL 250 rms Mono amp. I know the input to the subs is NOT in the sweet spot on the curve but acceptable for use per JL info in sealed boxes. They may not hit as hard but the SQ is excellent! I too can shake the mirror to a blur without clipping or damage. Been in 1 1/2 year now.

[Hypnotiq]

Any of you ever been metered before?

[TheIntrepid]

So I've got my subs that I boguht last night on Craigslist...if they don't sell by today I already called the guy I bought them from and said I wanted my money back because of a "personal emergency" and he said he'd give me $90 of the $100 I paid for them.


Now I'm looking at this

http://toronto.en.craigslist.ca/tor/ele/752231859.html

and this subwoofer/amp combo for $135
http://toronto.en.craigslist.ca/tor/pts/729491108.html

[Hypnotiq]

The fosgate is better. Check out www.audiosavings.com they are very well priced on everything. I just ordered ( 2 ) 12" flip down monitors for a buddy's car.

[cokey11]

Any of you ever been metered before?

I was in the 138.? Good enough for the girls I go out with!

[cokey11]

I do not believe those are JL audio subs either. They don't look like the backside of any JL sub i've ever seen


I think he meant JBL perhaps. I've seen all of the JL line for the last three years, none of them look like that.

[Hypnotiq]

I was in the 138.? Good enough for the girls I go out with!

142 here.. 138 is really good though. You running Memphis right? :rockon:

[01redMS]

Any of you ever been metered before?

i hit 146 dB in my 1g.

[Hypnotiq]

i hit 146 dB in my 1g.

what were you running? Also where did they place the mic? :drool5: I <3 db drags. Ive got a couple coming up next month.

[01redMS]

dude.

go find a legit audio shop. i feel like i know more about audio shops up there from reading this thread, than you know about, living there.

http://www.canadiancaraudio.com/online/eastern-canada/6391-toronto-install-shops.html

BJ is right with everything he said, you should probably listen to him. and i have an amp for sale, but from the looks of it, you dont shop for quality equipment...

[01redMS]

what were you running? Also where did they place the mic? :drool5: I <3 db drags. Ive got a couple coming up next month.

the mic was on the front seat. i was running USACi like 5 years ago with 2 IDQ12's. i had a memphis PR1KD (that gorm now owns) powering those. if i look, i might be able to find some pictures of the setup.

[cokey11]

142 here.. 138 is really good though. You running Memphis right? :rockon:

All JL...500/5, 2-12W3v2, 6 1/2 " XRs in the front, 6 1/2 " VRs in the rear

[01redMS]

what were you running? Also where did they place the mic? :drool5: I <3 db drags. Ive got a couple coming up next month.

here ya go.

http://memimage.cardomain.com/member_images/2/web/518000-518999/518951_29_full.jpg

[TheIntrepid]

Subs are sold... got each and every penny back!

[IntrepidBus IV]

The one comp I went to years ago I think I hit 133 db, but that was with DJ Magic Mike. :D lol

[IntrepidBus IV]

here ya go.

http://memimage.cardomain.com/member_images/2/web/518000-518999/518951_29_full.jpg

At least the carpets were clean! :p

[cokey11]

Subs are sold... got each and every penny back!

Now my advice to you is stay away from car audio.

[TheIntrepid]

Now my advice to you is stay away from car audio.

Shawn. Need...help. Need...subwoofers...and...amp... soon!

[cokey11]

Shawn. Need...help. Need...subwoofers...and...amp... soon!

Adi. Need...$500. Will...get..you....something....decent. The rest of the people here will probably chuckle a little and I did too until I heard them, but considering your budget of nothing, I'd suggest you find a store in Toronto that carries TMA. They are an off brand made by JL and actually don't sound too bad. You can get a 500 rms amp for about $250, and a couple 10" in a ported box for another $200.

[TheIntrepid]

Ok thanks.

[01redMS]

Adi. Need...$500. Will...get..you....something....decent. The rest of the people here will probably chuckle a little and I did too until I heard them, but considering your budget of nothing, I'd suggest you find a store in Toronto that carries TMA. They are an off brand made by JL and actually don't sound too bad. You can get a 500 rms amp for about $250, and a couple 10" in a ported box for another $200.

yeah just the picture of my trunk was over $2000 invested.

[01redMS]

At least the carpets were clean! :p

smartass...

i have no idea what was on the carpet, but could never get it off. by the time it came that i had a chance to clean it, people broke in and stole it.

[MegaTrep]

How do your thubz sound?

[LTrain01RT]

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