Free Sub!!! Jl10w3

[dXsquared]

i just got a free JL AUDIO 10W3 D2

it has dual 2 ohm voice coils and its pretty sweet... i was just wondering if 87DXHatch could tell me a box that i could make to get the loudest bass out of it.. im gonna be giving it 100 watts RMS to each coil... what shall i do? right now i built a .9 cube sealed box for it and its ok.. but i was wonderin if i made a 1.5 with a port, what would this do? and what size port??

thanks

Travis

[87DXHatch]

Could you give me the model number like exactly? Is it a v1, v2... what year is it. Give me this stuff and I could do some modeling and get back to you.

Oh yeah, and what ratio SPL to SQ do you want? 70/30? 50/50? Thanks.

[87DXHatch]

And may I ask why you didn't crop that picture of the car in your sig... there's soooo much unnecessary white space there :tongue:

[dXsquared]

its an old ass one.. its not a V2.. and i want all bass.. the shit that hits hard! like 80SPL/20 SQ i have a 3/4 inch 4X8, and an empty hatch.. lol... lemme know what i have to do

Travis

and ill fix the sig

[HostileJava]

Originally posted by DXHATCHBACK
i just got a free JL AUDIO 10W3 D2

it has dual 2 ohm voice coils and its pretty sweet... i was just wondering if 87DXHatch could tell me a box that i could make to get the loudest bass out of it.. im gonna be giving it 100 watts RMS to each coil...
Travis

Can you do that? I always assumed that you had to hook up each coil in either series or parallel to one output not each coil to a seperate output. I've never seen any daigram that came with speakers with dual voice coils that indicated hooking it up to two seperate outputs.

[dXsquared]

you can do it, but its best if its a mono signal to each coil... im actually just gonna run it at 4 ohms... it will get 200 watts RMS overall

Travis

[HostileJava]

Can you bridge your amp? Most amps offer more power when you bridge them and then you'd be running off of one channel.

[dXsquared]

its 75X2 at 4 ohms
100X2 at 2 ohms
200X1 at 4 ohms

thats all RMS... i think it should be higher but i dunno.. its a wal mart JENSEN amp...

Travis

[HostileJava]

I take it it's not stable at 2 ohms bridged then, let alone 1 ohm?

[dXsquared]

hell no... its ghetto.. thats why im not gonna run it at 1 ohm mono
if it could run 1 ohm, it would make too much power for this sub.. its like 250 watts RMS

Travis

[A Dawg Jr]

Happy b day 87DXHATCH, haha

[87DXHatch]

alright DXHATCH, I'll see what I can figure out... be back in a bit.

[87DXHatch]

Aight, if you want this thing to destroy...

Build a 3.2 cubic foot gross box. Get a 6" diameter piece of PVC pipe and cut it about 10" long, for a port. Put that port in that box, add the 10w3, and 200 watts, and you should have some serious bump.

[87DXHatch]

That'll make it ported to a little less than 40 hz, with a nice amount of port area... it'll be ridiculously loud, yet still retain a decent amount of SQ.

Any questions feel free to ask... and thanks for noticing it was my birfday, A Dawg Jr

[TJ89Accord]

I have 2 12" JL w3 v2s. They hit nice. I have my amp gains up only like half way and my radio is set for -4 for the subs and its SOOO loud. Those are nice subs. I have a Zapco AG350 amp. Much nicer than the Jenson ;). But I still can run it to 2 ohm mono :(. But I can run each sub at 2 ohm in stereo if I wanted... I have it a 4 ohm mono now though. sorry if this is confusing, but I have been drinking lol...

tim

[87DXHatch]

Zapco! X-P!

Nice choice of equipment.

[TJ89Accord]

yah i love the amp... blows away so many that i have heard :)

[87DXHatch]

I could have had a 1000 watt Zapco reference series amp for like $300 last winter, but it was right before Christmas and I had to buy presents... made me so sad.

[dXsquared]

i want to build a rectangle port... how should a make it? 6X6X10?

Travis

[dXsquared]

im about to build this box.. in like 30 minutes.. if anyone knows how big the port should be if its a rectangle, lemme know... i need an answer ASAP

Travis

[HostileJava]

I would go with maybe 2x8x10. Not sure though.

[PogiLXI]

Make Sure you put the port on the Same Face as the Speeker.

[87DXHatch]

15" X 2" by 10"
5" X 6" by 10"
30" X 1" by 10" <--- not recommended

All of those should give you a similar tune. If you wanted, make the port a little longer for a little better SQ and a little less SPL.

Also, because it's tuned around 40hz, be VERY careful playing test tones and bass mechanic material at full volume, unless you have a sub sonic filter.

Good luck :)

[NXRacer]

Hey dave, since you seem to be the pro at subs and sub boxes, i have a question to ask you. I have 2 Sony Xplodes (not the greatest choice, but its what i got). 12's about 1 year old. If i want to put them in a box, what would be the ideal box? I'm gonna go for probably 50/50 sq/spl. Prolly gonna run about 300w to them maybe more depending on what amp i get.

Sealed or ported? Right now i have them in a band pass, but it sucks a whole lotta MAJOR ass.

Also, what do you think about tubes? I can pick up a tube (for one sub) for like 60 bucks.

[dXsquared]

hmm... i made the box 3.2 cubes, and a 4 inch 13 inch long port.. its sooo quiet.. should i shorten the port? i am about to cut the box in half to see if it will go louder... the box is 36 long, 12 high and 16 deep (internally)... ill go shorten the port, i dunno if it will work.. i couldnt find 6 inch so 4 is what i bought

Travis

[87DXHatch]

What do you mean by "4 inch 13 inch long" port? Did you use a tube? Oh yeah, duh...

Yes, shorten the port. If you're using a 4" tube, make it like 9 inches long and see what that does for you. If it's not loud enough, lop off another 2 inches or so, DON'T cut the box, that will not help it get louder.

[87DXHatch]

Originally posted by NXRacer
Hey dave, since you seem to be the pro at subs and sub boxes, i have a question to ask you. I have 2 Sony Xplodes (not the greatest choice, but its what i got). 12's about 1 year old. If i want to put them in a box, what would be the ideal box? I'm gonna go for probably 50/50 sq/spl. Prolly gonna run about 300w to them maybe more depending on what amp i get.

Sealed or ported? Right now i have them in a band pass, but it sucks a whole lotta MAJOR ass.

Also, what do you think about tubes? I can pick up a tube (for one sub) for like 60 bucks.

If you're only going to run 300 watts to them (is that to each? Or total) I would suggest ported... but you may want to go sealed for simplicity's sake. If you don't want to deal with the more complicated design, just go sealed. If you went sealed, just put them in a 3 cubic foot internal volume common chamber, or use a divider and give each sub 1.5 cubic feet.

Bandpass enclosures are one of the most efficient, but you HAVE to have them custom made (or make them yourself) for YOUR SPECIFIC SUB or application. The prefab bandpass enclosures simply blow donkey.

And what do you mean by "a tube"? Can you give me a link to something like it?

[dXsquared]

i shortened it to 9 inches and its still not really loud.. im feeding it 300 watts rms and its still pretty quiet... my single 12 inch kenwood with 200 watts rms in a 1 cube plywood box pounds harder.. any more sugestions????

Travis

[87DXHatch]

Are you 100% sure you have your coils in parallel and not in series? So that it's getting the lower load? Or do you have each channel hooked up to each coil? Are you sure you have your gains set so it's getting full power? It should be very loud... I don't know why it isn't.

[dXsquared]

i have it running at 4 ohms... thats giving me 300 watts RMS... if i was at 1 ohm, id be running 550 watts rms and i would cook the amp and the sub.. and the gains are set just over half and the cross over is at 80 hz... the subs is flapping hard, but not pushin the air too well

im clueless too...

Travis

[87DXHatch]

What do you mean by "flapping hard, but not pushin the air too well?"

[dXsquared]

the sub is moving like really hard... like it should, but its just not makin any bass.. ( there is bass but its not very low or loud)

Travis

[87DXHatch]

Very weird... what songs are you playing? Maybe you're just having mondo cancellation... try moving the box around, facing it forward, rear-ward, etc...

[dXsquared]

its in my friends truck... its just facing up across the seats.. i dont have the car around, so i cant try it in the hatch... and its all hip hop and bass songs... his 2 12's in 2 cubes each sealed hit way way way harder... ill have to try it in the hatch tommorow

Travis

[87DXHatch]

Are you sure everything's sealed up tight? It could be huge cancellation if it's just in the middle of the truck, instead of back behind a seat...

Well it *should* be pretty loud... I'd have to see it to really know what's up...

[HostileJava]

If I had to venture a guess, I'd say your port is probably way to big. You can't have it hooked up as 4 ohms unless you have the voice coils hooked up to seperate channels. In series it would be 8 ohms and in parallel you should have 2 ohms.

[87DXHatch]

"port way too big" is really kind of vague... the larger the diameter, the longer the port has to be to reach a desired tune. The shorter the port, the higher the tune.

He has each coil hooked up to a channel on his amp, so the parallel/series thing is moot.

[dXsquared]

i have it running 4 ohm mono... its a dual 2 ohm sub.. anyway, its on a mono block amp... and i just went in it, closed the doors and it was amazing.. cant wait to get it in the hatch...

Travis

[HostileJava]

Originally posted by DXHATCHBACK
i have it running 4 ohm mono... its a dual 2 ohm sub.. anyway, its on a mono block amp... and i just went in it, closed the doors and it was amazing.. cant wait to get it in the hatch...

Travis

I thought you said it was dual 4 ohm?

[dXsquared]

Originally posted by DXHATCHBACK
i just got a free JL AUDIO 10W3 D2

it has dual 2 ohm voice coils and its pretty sweet... i was just wondering if 87DXHatch could tell me a box that i could make to get the loudest bass out of it.. im gonna be giving it 100 watts RMS to each coil... what shall i do? right now i built a .9 cube sealed box for it and its ok.. but i was wonderin if i made a 1.5 with a port, what would this do? and what size port??

thanks

Travis

thats my very first post about the sub

Travis

[87DXHatch]

Excellent... let us know how it sounds in the hatch!

And be careful playing bass mechanic/bass test stuff, unless the Jensen has a sub-sonic filter...

[HostileJava]

I guess it was just to late for me to be up posting :huh:

[dXsquared]

hmm.. it doesnt say anythin about sub sonic... what will happen if i play bass tests?? will the sub blow up??? and can i get an external sub sonic filter???

Travis

[HostileJava]

It will kill everthing outside of the car within a hundred mile radius and leave only what's inside the car untouched. It's the deadliest weapon known to man. Be careful with it my son.

[87DXHatch]

If you play bass tests at full volume, you run a good risk of blowing up your sub. If a sub plays below the frequency it's tuned it, it starts "unloading"... this is the same as if the sub were playing free air, so you'll notice it starts REALLY moving. Because your port is as small as it is, it won't be as big of a danger, but the threat is there...

You can buy external SSF... just go to eBay to the car audio and electronics section and look up "sub crossover"... you can find subwoofer crossovers that have SSF built into them. As a bonus it'll give you a little more control over your sub, with extra crossover features.

[HostileJava]

I think I like my explanation better. Completely useless and hilarious to me.

[dXsquared]

i have a sweet deck that has all those cross overs in it.. but no sub sonic one... its got low pass freq. high pass front and high pass rear freq. and i can give 15 db boost or -15 db at the touch of a button.... ill look for the external one

Travis

[NXRacer]

I can get a heavy duty cardboard tube from a stereo shop that makes REALLY good boxes. Its kinda like what bazooka makes, but WAY better. Bazooka doesnt even compare in sq/spl to these tubes. I'd show you a picture, but the only picture i can find is of bazooka tubes.

[dXsquared]

holy shit guys! i just went home and installed this in my hatch and if fuckin pounds!!! now i need to make a nice box for my kenwood 12.. i think ill juts go 1.5 cubes ported... i just want to sell it anyway... and maybe ill port my jensens too.. and then sell those...

thanks for all the help 87DxHatch

Travis

[87DXHatch]

Told you it'd be insane ;)

You have any other questions or concerns, make a thread or drop me a line

[TJ89Accord]

I wonder what my box is tuned to. Oh well, pretty much got it all for free, and if the subs blow, I can get them fixed or replaced cause I have a reciept for em :). My box has a triangle shaped port on the side of it. guess I would have to measure everything to actually figure it out. I don't know what the size of the box is either lol...

tim

[Bloodlust]

Damn how did you get them for free? I am still trying to sell my JL 12 inch W3's in a bandpass box and no one is emailing me or calling. Damnit it sucks. I would probably run a little bit more than 200 watts to each of them, but you should be fine. If you want to get the most out of them, get a program that helps you design boxes and build one. Dont go out and buy a generic box made by Subzero or anything.

[dXsquared]

i did build a custom box... and it was out of a burnt car at my friends dad's junk yard.. they juts said HERE YOU GO.. the front was in the front of the bandpass box so its mint.. th eback was in the part with the port, but it only got some minor soot on it.. i cleaned it up with compressed air and some fantastic.. its like mint..

[TJ89Accord]

I got mine for free :). And I got the amp for 10 bucks :). It was nice workin at a stereo shop...

tim

[n88accordLX-i]

heres some basics

PVC ports suck, go vented.

Smaller ported box wont be as loud as a big ported box with the same attributes, sealed on the other hand is the other way around basically.

Cutting your port shorter will only tune your box higher, which is not what you want if you like lower bass.

The bigger the box is, the shorter the port has to be, but the bigger the port area, the longer the port will need to be to get the tuning you want.

Theoretically for every .5 cuft you add to a box you gain 1dB.

So basically if you want that sub to pound, give it a BIG box with ALOT of port..

And its a dual 2ohm sub, so in paralell the sub would be wired to 1ohm(not 2ohm, whoever said that) and in series you would get 4ohm final load on a mono amp, or bridged.

[87DXHatch]

Um, the whole thing has already been decided. The box design I gave him (3 cubic feet) is pretty damn big for a single 10" subwoofer, so I already had that aspect covered, he told me he didn't care very much about SQ so I gave him a port tuning for SPL mainly...

Don't worry, buddy, I've got everything under control, I know enough about car audio to help him completely ;)

[dXsquared]

i was just gonna say that your like a week too late

Travis

[n88accordLX-i]

Originally posted by DXHATCHBACK
i was just gonna say that your like a week too late

Travis

Its for future referance, for whoever reads this post, and it takes more than just port tuning to get SPL

[HostileJava]

Originally posted by n88accordLX-i

And its a dual 2ohm sub, so in paralell the sub would be wired to 1ohm(not 2ohm, whoever said that) and in series you would get 4ohm final load on a mono amp, or bridged.

Umm, yeah, uh, thanx. I think I already established that I thought it was a dual 4 ohm for some reason.

[19 accord]

Hey. Has anyone in here seen the little speaker box that has 2 10" subs in it with neon rings around them? if so i'm just trying to figure out are they actually subs? meaning can i get an amp and all that to make good sound. OR Is it just a cheesy speaker setup thing? (It says max 600watts of power)

[dXsquared]

its grey carpeting? with two tweeters? and grills on the subs?

i would stay away from that shit.. get a real sub and amp and you will be very happy

Travis

[87DXHatch]

^^^agreed