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RangerDangerV2
07-17-2012, 05:55 PM
gonna go with 2 15s so I can get the 150 that im looking for... heres the design. 3.42 cu ft per chamber before adding bracing, will work out to a little over 3 cu ft per chamber after bracing, 90 sq inches of port tuned to 33hz. comments please.
http://i1161.photobucket.com/albums/q513/bumpin101/Capture-10.png
i think im getting much better at designing...

---------- Post added at 05:55 PM ---------- Previous post was at 05:54 PM ----------

45s will be added as well.

kushy_dreams
07-17-2012, 06:41 PM
Move the woofer cutouts closer to the center of the box and closer to the outer opening of the port, to me they are too close to the mouth of the port on the inside.

wenn_du_weinst
07-17-2012, 06:46 PM
I'd go single shared chamber

NoLoud4U
07-18-2012, 01:26 PM
Whats the port going to load off of in your truck?

RangerDangerV2
07-18-2012, 01:26 PM
i think I may go subs up port up... no kerfed ports, 45s and roundovers will be added, just too lazy to draw them. this is a rough design anyways being that I dont even have the woofers built/tested yet...

bhsdriller
07-18-2012, 01:26 PM
don't do port forward....either both firing up or subs forward/port up. Common chamber also, no 45's

how much power? I was up to a 151.5 with 2 15's and a 3500

RangerDangerV2
07-18-2012, 01:28 PM
Whats the port going to load off of in your truck?

im going subs and port up, loading off of the roof.

---------- Post added at 01:28 PM ---------- Previous post was at 01:27 PM ----------


don't do port forward....either both firing up or subs forward/port up. Common chamber also, no 45's

how much power? I was up to a 151.5 with 2 15's and a 3500

3.5k for now, 7k in a few months

bhsdriller
07-18-2012, 01:32 PM
7k should get loud for sure

RangerDangerV2
07-18-2012, 01:35 PM
7k should get loud for sure
gonna have to tone it down for daily though... subs will gets stinky on 7k... spl audio is most likely gonna build up the 2 jugg motors for me, so the final box design will be done after I figure out the woofers t/s and vas.

---------- Post added at 01:35 PM ---------- Previous post was at 01:35 PM ----------

goal is a 153 on 7k... @ 30hz...

bhsdriller
07-18-2012, 01:38 PM
It could be done....what organization? I meter Meca style, at headrest with door open

CHEMMINS
07-18-2012, 01:39 PM
I'd toss both subs on the driver side, firing up, and port shooting into passenger door.

RangerDangerV2
07-18-2012, 01:39 PM
It could be done....what organization? I meter Meca style, at headrest with door open

db drag, but the local shows do it meca style. and why should I go with a single shared chamber??

bhsdriller
07-18-2012, 01:40 PM
db drag, but the local shows do it meca style. and why should I go with a single shared chamber??

I've always done them like that and had good luck, look at everyone elses boxes and they are always shared chambers. It's just that you don't see seperate chambers I guess, they don't work as well

RangerDangerV2
07-18-2012, 01:42 PM
how many cubes for the shared chamber?? 5?

bhsdriller
07-18-2012, 01:48 PM
2 custom 15's? 5 seems small, you were going to use 3.42 each in the other so do 6.84 on the shared. Mine are in 7@32hz

RangerDangerV2
07-18-2012, 01:49 PM
2 custom 15's? 5 seems small, you were going to use 3.42 each in the other so do 6.84 on the shared. Mine are in 7@32hz

shared chamber doesnt work like that. the subs will see more than 2.5 in 5 cu ft.

RangerDangerV2
07-18-2012, 01:50 PM
shared chamber doesnt work like that. the subs will see more than 2.5 in 5 cu ft.

and keep in mind they will be on 3.5k a piece in the future... so I think I may go with 6 cu ft...

bhsdriller
07-18-2012, 01:52 PM
shared chamber doesnt work like that. the subs will see more than 2.5 in 5 cu ft.

I don't follow
5 cubes after displacement?

---------- Post added at 10:52 AM ---------- Previous post was at 10:51 AM ----------

Nevermind, I get what you're saying

RangerDangerV2
07-18-2012, 01:53 PM
I don't follow
5 cubes after displacement?

---------- Post added at 10:52 AM ---------- Previous post was at 10:51 AM ----------

Nevermind, I get what you're saying
for example in a 2 cu ft shared chamber for 2 subwoofers, each sub will see more than half of the chamber. they should see about 1.3 a piece. or something along those lines.

bhsdriller
07-18-2012, 01:54 PM
for example in a 2 cu ft shared chamber for 2 subwoofers, each sub will see more than half of the chamber. they should see about 1.3 a piece. or something along those lines.

Yeah, I thought that right after I posted

RangerDangerV2
07-18-2012, 01:55 PM
Yeah, I thought that right after I posted

so im thinking 6 cu ft with 90sq inches or port. these are still rough being that my woofers arent even built yet lol.

bhsdriller
07-18-2012, 02:20 PM
sounds good...15" per cu.ft.

RangerDangerV2
07-18-2012, 02:22 PM
sounds good...15" per cu.ft.
Ive found that 15 is a good balance for the lanes and daily groundpounding... subs up port up on the drivers side... thats exactly what my 18 is in now, 6 cu ft tuned to 32 with 90 sq inches of port...

bhsdriller
07-18-2012, 02:29 PM
I have my port on driver side too, but have been wanting to try passenger side. Maybe with the port further away and not right behind my head it might sound better

NoLoud4U
07-18-2012, 02:30 PM
If you set the box up the same as the 18 on the same power your only going to gain maybe 2 dbs. When you double the power and can keep the voltage up you might gain 2.5 more. Thats going from a 144 to a 149. Maybe less, you know how this stuff works. I say Wall IT!

RangerDangerV2
07-18-2012, 02:31 PM
I have my port on driver side too, but have been wanting to try passenger side. Maybe with the port further away and not right behind my head it might sound better
it will sound better but it wont meter as high and you will be in the hot seat all of the time... idk about you but I like the womenz to be in the hot seat... :naughty:

NoLoud4U
07-18-2012, 02:38 PM
it will sound better but it wont meter as high and you will be in the hot seat all of the time... idk about you but I like the womenz to be in the hot seat... :naughty:

You lost me.. Speaking of seats, I think im going to pull out my passenger seet to add a ton of D3100s for a 10k upgrade. People getting demos can sit on the battery rack

RangerDangerV2
07-18-2012, 02:39 PM
You lost me.. Speaking of seats, I think im going to pull out my passenger seet to add a ton of D3100s for a 10k upgrade. People getting demos can sit on the battery rack

meter is typically on the passenger side... and lol

NoLoud4U
07-18-2012, 02:49 PM
meter is typically on the passenger side... and lol

:fro:

RangerDangerV2
07-19-2012, 10:02 AM
http://i1161.photobucket.com/albums/q513/bumpin101/Capture-12.png
this is pretty much the final design, each sub sees 3.38 cu ft, tuned to 33.88hz... hoping for a 48 outlaw on music, on 1 saz3500, and a 150 on two saz3500s.. I choked them off on volume a little bit to increase the power handling, I know many of you said to do a single chamber but I havent had good luck with the single chamber designs that I have made... Idk what my woofers fs is going to be but they should be within the 32-38hz range, so tuning a few hz below or above them wont hurt much at all. comments??

RangerDangerV2
07-19-2012, 11:07 AM
forgot to add... 105sq inches of port =15.5 per cu ft.

Anton Miller
07-19-2012, 11:16 AM
http://www.youtube.com/watch?v=kTavgAYqmx4&feature=g-upl

sub up port up works great in those. ont he mic at dads this set up will do over a 154-155... for reference my car only did abotu a 150 on tl at headrest, dads it did a 153.x ;)

RangerDangerV2
07-19-2012, 11:19 AM
http://www.youtube.com/watch?v=kTavgAYqmx4&feature=g-upl

sub up port up works great in those. ont he mic at dads this set up will do over a 154-155... for reference my car only did abotu a 150 on tl at headrest, dads it did a 153.x ;)

dude, its jake form minnesota bass heads... Ive been talking to kyle quite a bit.. On 7k with my 2 custom 15s im hoping for a 151 on music, doubtful but it could happen, on 1 saz3500 I would like to match his 148 on music. very nice design that you have there anton..

Anton Miller
07-19-2012, 11:26 AM
i know lol i was just saying in reference to the mics at dads

RangerDangerV2
07-19-2012, 11:28 AM
i know lol i was just saying in reference to the mics at dads

oh lol, what do you think about the tuning, vol, and port area?? I know its kind of a shot in the dark being that the woofers are hypothetical right now, but thats why you should let me use you wt3, so I can test em when im done lol...

bhsdriller
07-19-2012, 12:11 PM
new design looks a lot better

RangerDangerV2
07-19-2012, 12:13 PM
new design looks a lot better

I dropped the port braces and doubled the port walls... now each sub is in 3.2 cubes... seems a little small but if each one is going to be on 3.5k...

RangerDangerV2
07-19-2012, 12:15 PM
and now the tuning is 35.5, I like the little bit higher tuning that way I can meter high but I should still be able to murder some lows...

NoLoud4U
07-19-2012, 12:19 PM
That tuning should be fine with that volume. Going that small is not going to hit the lows that great anyway. It will just not as good as a bit more internal volume

Anton Miller
07-19-2012, 12:21 PM
That tuning should be fine with that volume. Going that small is not going to hit the lows that great anyway. It will just not as good as a bit more internal volume

really? LMFAO... box for my 2 12's is about 3 cube total, box int he video of kyles truck 3 cuber per chamber... nope dont hit lows very well at all....

RangerDangerV2
07-19-2012, 12:22 PM
really? LMFAO... box for my 2 12's is about 3 cube total, box int he video of kyles truck 3 cuber per chamber... nope dont hit lows very well at all....

do you still have kyles box design?? id be willing to buy it from you.. I saw the internals but Im just not that good at designing them yet...

NoLoud4U
07-19-2012, 12:31 PM
really? LMFAO... box for my 2 12's is about 3 cube total, box int he video of kyles truck 3 cuber per chamber... nope dont hit lows very well at all....

Yes really. Like I said, it will but its not going to have the same touch as a larger box. Its going to be more peaky also, normally higher in its range.

bhsdriller
07-19-2012, 12:38 PM
Think I might give subs and port up a try on my next box....looks like it does good

RangerDangerV2
07-19-2012, 12:39 PM
I am trying to keep the vol down a little because each 15 will be on a 3500...

wickedwitt
07-19-2012, 12:40 PM
Came expecting this:
http://www.dualav.com/images/mobileaudio/goods/subwoofers005.jpg

Severely disappointed.

Single chamber makes them 'feel' as though they are in a bigger box than you really build. Lowers power handling, increases efficiency.

RangerDangerV2
07-19-2012, 12:42 PM
Came expecting this:
http://www.dualav.com/images/mobileaudio/goods/subwoofers005.jpg

Severely disappointed.

Single chamber makes them 'feel' as though they are in a bigger box than you really build. Lowers power handling, increases efficiency.

i know this, but when 2 15s are on 2 3500s strapped @ 1ohm... I need all of the power handling I can get.

wickedwitt
07-19-2012, 12:45 PM
i know this, but when 2 15s are on 2 3500s strapped @ 1ohm... I need all of the power handling I can get.

The gain does turn counter-clockwise...

RangerDangerV2
07-19-2012, 12:47 PM
The gain does turn counter-clockwise...

really?? didnt know that lol... but I need all of those 2 3500s.

Anton Miller
07-19-2012, 12:58 PM
Yes really. Like I said, it will but its not going to have the same touch as a larger box. Its going to be more peaky also, normally higher in its range.

interesting... cause the enclosures ive built always have a flat response... within a db or so. the 2 15's ranger enclosure int he video does a 150-151 from 30 to 50 hz. my enclosure for 2 12s does a 149 to 150 from 30 - 45 hz

im not going to argue with you, as i have my experience as im sure you do as well. but im tellign your right now, your wrong. try it once :) a nice small box with good port area tuned low will suprise you. i suppose i should say i only build for sundown woofers, so i guess this dc or atomoic or mmats stuff could be different, but doubt it..

RangerDangerV2
07-19-2012, 01:02 PM
interesting... cause the enclosures ive built always have a flat response... within a db or so. the 2 15's ranger enclosure int he video does a 150-151 from 30 to 50 hz. my enclosure for 2 12s does a 149 to 150 from 30 - 45 hz

im not going to argue with you, as i have my experience as im sure you do as well. but im tellign your right now, your wrong. try it once :) a nice small box with good port area tuned low will suprise you. i suppose i should say i only build for sundown woofers, so i guess this dc or atomoic or mmats stuff could be different, but doubt it..
35 low enough?? what was kyles tuned to??

NoLoud4U
07-19-2012, 01:04 PM
interesting... cause the enclosures ive built always have a flat response... within a db or so. the 2 15's ranger enclosure int he video does a 150-151 from 30 to 50 hz. my enclosure for 2 12s does a 149 to 150 from 30 - 45 hz

im not going to argue with you, as i have my experience as im sure you do as well. but im tellign your right now, your wrong. try it once :) a nice small box with good port area tuned low will suprise you. i suppose i should say i only build for sundown woofers, so i guess this dc or atomoic or mmats stuff could be different, but doubt it..

I can tell you from my experiance. 3 cubes for what I have tuned at 35 did not have as much low end presence as they did with 3.5 cubes tuned at 35. it was there but you could tell the air flow was not the same. My peak was 38 at 3.5 and 49 at 3.

Anton Miller
07-19-2012, 01:09 PM
35 low enough?? what was kyles tuned to??

kyles was a touch under 3 cubes tuned to 34


I can tell you from my experiance. 3 cubes for what I have tuned at 35 did not have as much low end presence as they did with 3.5 cubes tuned at 35. it was there but you could tell the air flow was not the same. My peak was 38 at 3.5 and 49 at 3.

different vehical different cabin gains, what your testing shuild have shown you was to increase port area, lengthen port to tune LOWER and make box at 3 cube. you would have had a much nicer response curve then.

also, your bandpass in the scion will be different from a truck, as it is a completely different wave development.

Anton Miller
07-19-2012, 01:13 PM
I can tell you from my experiance. 3 cubes for what I have tuned at 35 did not have as much low end presence as they did with 3.5 cubes tuned at 35. it was there but you could tell the air flow was not the same. My peak was 38 at 3.5 and 49 at 3.



let me elaborate, your tuning was the same, so all you did was change box volume. by changing box volume you lost excursion in the woofer near tuning, in order to get that back you need to add port area to releive the back pressure from the rear wave, you will lose more control at higher notes up in the high 40s to 50s, but with 15's you dont have to worry much about that as they have the ability to unload on those notes pretty much as much as they want... so more port area to get more excursion near tuning and smaller box to fit the huge port, and lower tuning to bring your peak down (which in a daily application means nothing)

NoLoud4U
07-19-2012, 01:15 PM
kyles was a touch under 3 cubes tuned to 34



different vehical different cabin gains, what your testing shuild have shown you was to increase port area, lengthen port to tune LOWER and make box at 3 cube. you would have had a much nicer response curve then.

also, your bandpass in the scion will be different from a truck, as it is a completely different wave development.

That wasnt the bandpass. Just a normal slot port. Both had the same port are and **** near same placement. I'm going back to it this time with a bit lower tuning. Its loud enough for daily. But like you said, every sub will want what it wants. With him running a DD based sub i would imagine it would want a bit more.

NoLoud4U
07-19-2012, 01:17 PM
let me elaborate, your tuning was the same, so all you did was change box volume. by changing box volume you lost excursion in the woofer near tuning, in order to get that back you need to add port area to releive the back pressure from the rear wave, you will lose more control at higher notes up in the high 40s to 50s, but with 15's you dont have to worry much about that as they have the ability to unload on those notes pretty much as much as they want... so more port area to get more excursion near tuning and smaller box to fit the huge port, and lower tuning to bring your peak down (which in a daily application means nothing)

That makes perfect sence but both had 18sq per cube.

RangerDangerV2
07-19-2012, 01:17 PM
That wasnt the bandpass. Just a normal slot port. Both had the same port are and **** near same placement. I'm going back to it this time with a bit lower tuning. Its loud enough for daily. But like you said, every sub will want what it wants. With him running a DD based sub i would imagine it would want a bit more.

as I have said before these are not the final designs, I have yet to build and test these woofers and once I have the t/s parameters and vas I will start the actual designs.

SourDeez
07-19-2012, 01:18 PM
this will not make music for you to listen to

Anton Miller
07-19-2012, 01:19 PM
That wasnt the bandpass. Just a normal slot port. Both had the same port are and **** near same placement. I'm going back to it this time with a bit lower tuning. Its loud enough for daily. But like you said, every sub will want what it wants. With him running a DD based sub i would imagine it would want a bit more.

if you put an enclosure inside a vehical (enclosure) it becomes a band pass ;)

RangerDangerV2
07-19-2012, 01:20 PM
if you put an enclosure inside a vehical (enclosure) it becomes a band pass ;)

a very poorly sealed one at that.

NoLoud4U
07-19-2012, 01:21 PM
if you put an enclosure inside a vehical (enclosure) it becomes a band pass ;)

Well I need to find a different enclosure cause mine is ****

Anton Miller
07-19-2012, 01:27 PM
a very poorly sealed one at that.

fog machine and painters tape with an spl meter can go a long way!

RangerDangerV2
07-19-2012, 01:28 PM
fog machine and painters tape with an spl meter can go a long way!

I just use smoke bombs and white silicone.

Anton Miller
07-19-2012, 01:29 PM
That makes perfect sence but both had 18sq per cube.

well tune it lower, you will lose very minimal on the high end as you have enough port area to let the sub go ape ****. it might not hurt to even bring it down some to about 17-16.5 per

RangerDangerV2
07-20-2012, 02:53 AM
[QUOTE=RangerDanger;8097065]http://i1161.photobucket.com/albums/q513/bumpin101/Capture-12.png

how do I get rid of the planes on the port opening and sub cutouts so I can see inside the box without the plane being there??

RangerDangerV2
07-21-2012, 12:51 AM
finished.
http://i1161.photobucket.com/albums/q513/bumpin101/dual15s-2.png

T3mpest
07-23-2012, 06:24 PM
It's better to choke a sub on airspace than it is to choke the port. Choking the port will create a very uneven frequency response as you add power as the port will be unable to move any more air at or near tuning. No point in tuning low if you dont' have enough port area to actually move air at those frequencies. Low airspace does reduce tuning peaks some, but if your subs have alot of powerhandling, you can somewhat overcome this inherent effeciency disadvantage.. I'd say Anton is right on this one, generally speaking.

ChevyRidinLow
07-23-2012, 06:47 PM
db drag, but the local shows do it meca style. and why should I go with a single shared chamber??

I thought the rule of thumb was shared chamber is a 3db gain from separate chambers. (Obviously a generalized statement)

RangerDangerV2
07-23-2012, 07:03 PM
I thought the rule of thumb was shared chamber is a 3db gain from separate chambers. (Obviously a generalized statement)

Idk if that is true but im just going to wait until I build my 15s to design the enclosure.