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View Full Version : Hdc3 18 Smaller box for more power?



bgowdy31
08-01-2013, 12:57 AM
like the title says. the hdc3 18 already has a box with it, it was mine from before and it turns out the box is smaller then what i thought the first time i owned it. it is 6.01 cubes before displacement, it has 2 6" aeros, the sub and small bracing, and after displacements the box was 5.30 cubes net.

I know alot of ppl will say that small for a hdc3, i was unaware due to i didnt build it originally nor did i even measure it until before when i owned it. well my friends measured it last night and yea it 5.30 cuubes. and power i was only pushing probly 6-700rms on it last year and thats when i got the numbers in my sig.

So im going to be using about 3.5k on the hdc3 18 and i would like to try the same box but im wanting to add alittle more port but that will take the box to 5.16 cubes net which is not that much smaller then the way it sits and im going to use more power. This will geared SPL>SQ



Thoughts? And sorry about the long rant

hispls
08-01-2013, 01:21 AM
I've found that larger box gains more than more port area....that's assuming you have 15-17" per cube to start. I wouldn't be surprised if a 15 in 5 cube was louder than an 18

bgowdy31
08-01-2013, 02:41 AM
I've found that larger box gains more than more port area....that's assuming you have 15-17" per cube to start. I wouldn't be surprised if a 15 in 5 cube was louder than an 18

Hmmm... I actually do have 15in per cube. So even with more power? I thought a box csn be smaller then norm with more power? Also it wasnt very much bigger before with smaller ports and way less power.

pro-rabbit
08-01-2013, 02:45 AM
While a smaller enclosure can increase the power handling abilities of a sub, it is not very drastic in most cases.

However, if you go to large you will drop off on the power handling ability rather quickly.

bgowdy31
08-01-2013, 02:51 AM
While a smaller enclosure can increase the power handling abilities of a sub, it is not very drastic in most cases.

However, if you go to large you will drop off on the power handling ability rather quickly.

Thats what i was thinking. Before i had little power and it pretty well
to me atleast. And now it would be alittle smaller but with more power added. Probly more then double what i ran before

mlstrass
08-01-2013, 02:57 AM
Can only try it and find out.

One guy on my team runs 2 HDC 18's in 10.5net, daily box but burps around a 152 sealed up...

NASTY08IMPALA
08-01-2013, 03:13 AM
dammit man just build the box ..this is like the 10th thread lol

bgowdy31
08-01-2013, 03:17 AM
dammit man just build the box ..this is like the 10th thread lol


Shut dude im bored and trying to learn lol. It aint like theres any other interesting threads on here this late lol

bgowdy31
08-01-2013, 03:20 AM
Can only try it and find out.

One guy on my team runs 2 HDC 18's in 10.5net, daily box but burps around a 152 sealed up...

How much port was he using?

NASTY08IMPALA
08-01-2013, 03:22 AM
How much port was he using?

i bet 20"^2

bgowdy31
08-01-2013, 03:28 AM
i bet 20"^2

Well ill have 15.1^2 per cube lol

bgowdy31
08-01-2013, 03:29 AM
My bad 15.3^2

mlstrass
08-01-2013, 03:33 AM
How much port was he using?

16^2 per cube, slot port...Peaks around 38Hz...

---------- Post added at 01:33 AM ---------- Previous post was at 01:32 AM ----------


i bet 20"^2

You lost that bet :p:

bgowdy31
08-01-2013, 03:35 AM
16^2 per cube, slot port...Peaks around 38Hz...

---------- Post added at 01:33 AM ---------- Previous post was at 01:32 AM ----------




You lost that bet :p:

kew. My truck peaks like 50 and im gonna tune around 40. Maybe it work..

NASTY08IMPALA
08-01-2013, 03:37 AM
oh well...i have almlst 18 ..16 is on the small side for aq let alone 15...bump that port to 18

NASTY08IMPALA
08-01-2013, 03:38 AM
all ur.aq.boxes.havent had much port ...let.that bish breath

bgowdy31
08-01-2013, 03:44 AM
all ur.aq.boxes.havent had much port ...let.that bish breath

Im using aeros by the way. I shouldnt need to bump it up

mlstrass
08-01-2013, 03:45 AM
oh well...i have almlst 18 ..16 is on the small side for aq let alone 15...bump that port to 18

Not when tuned to 38Hz and playing down to 28Hz with lots of power on each sub...

NASTY08IMPALA
08-01-2013, 03:49 AM
Im using aeros by the way. I shouldnt need to bump it up

i forgot ur usin aeros

---------- Post added at 02:49 AM ---------- Previous post was at 02:48 AM ----------


Not when tuned to 38Hz and playing down to 28Hz with lots of power on each sub...

main reason i wont tune that high

hispls
08-01-2013, 12:01 PM
Hmmm... I actually do have 15in per cube. So even with more power? I thought a box csn be smaller then norm with more power? Also it wasnt very much bigger before with smaller ports and way less power.

AQ is pretty stiff suspension and it's harder than you think to bottom out an 18" on a 6 spoke frame if you're not a total retard playing below tuning. I was running an 18" with 2 very soft TC 10" spiders for a little while in nearly 9 cube and didn't run into excursion issues... though the point is my bet would be you would gain more going to 6 cube than using that extra cube in port displacement.... just my experience..... 20" port per is nice, but not a deal breaker I think

hispls
08-01-2013, 12:03 PM
Not when tuned to 38Hz and playing down to 28Hz with lots of power on each sub...

IMO if you want to play down to 28 you should tune @ 32. Tuning to 38 and trying to play 28 is asking for trouble on high power.

SounDrive
08-01-2013, 12:09 PM
IMO if you want to play down to 28 you should tune @ 32. Tuning to 38 and trying to play 28 is asking for trouble on high power.

What he said... Either build a burp box or a daily box, not both...

BigJoker
08-01-2013, 12:48 PM
IMO if you want to play down to 28 you should tune @ 32. Tuning to 38 and trying to play 28 is asking for trouble on high power.

He listens to different music. Not mainly lows. Just did it to just do it.

bgowdy31
08-01-2013, 12:58 PM
What he said... Either build a burp box or a daily box, not both...

Actuay you can have both. I have a friend in meca and iasca that has a 6th order that has a bandwidth from like 30 up to 60 strong. But thats the box he uses for burps as well. Actually when your loud on music then you should be loud on a burp. That why i build for music

bgowdy31
08-01-2013, 12:58 PM
What he said... Either build a burp box or a daily box, not both...

Actuay you can have both. I have a friend in meca and iasca that has a 6th order that has a bandwidth from like 30 up to 60 strong. But thats the box he uses for burps as well. Actually when your loud on music then you should be loud on a burp. That why i build for music

bgowdy31
08-01-2013, 01:03 PM
IMO if you want to play down to 28 you should tune @ 32. Tuning to 38 and trying to play 28 is asking for trouble on high power.

Im not a retard i dont try to play way below my tuning. I usually tune are 38hz i dont really listen to any thing below 35

SounDrive
08-01-2013, 01:05 PM
Actuay you can have both. I have a friend in meca and iasca that has a 6th order that has a bandwidth from like 30 up to 60 strong. But thats the box he uses for burps as well. Actually when your loud on music then you should be loud on a burp. That why i build for music

That's not always true. Buck meters higher on music than he does on burps. It doesn't make much sense, but I was there when he metered... the termlab doesnt lie lol. Higher tuning and larger port area does better for burping and chasing numbers. If you want a good daily box it won't have quite as much port area and will be tuned a lot lower.

bgowdy31
08-04-2013, 05:27 PM
That's not always true. Buck meters higher on music than he does on burps. It doesn't make much sense, but I was there when he metered... the termlab doesnt lie lol. Higher tuning and larger port area does better for burping and chasing numbers. If you want a good daily box it won't have quite as much port area and will be tuned a lot lower.

i know this from exp, when i ran this setup before i was .7 to a 1db lower on a burp, then when i played music. my burp on the dash was a 145.4. playing music i did 146.3