PDA

View Full Version : Help with tuning!



ABNgang
05-03-2009, 05:05 PM
I have the Digital Design 2512a's running off an AQ 1200D and i need to build a box..
i am going to put the in a dodge intrepid (preferably facing up) it has a measurement of 18in from bottom of the trunk to top...and side to side is near 35in i believe.....i just dont know what i should tune it to...like what is preferably the best amount of hz?
(enclosed trunk)

DonH
05-03-2009, 05:06 PM
what kind of music do you listen to mostly?

cj407
05-03-2009, 05:07 PM
btween 35-40 is usual DD tuning..

ABNgang
05-03-2009, 05:07 PM
i listen to rap mostly

DonH
05-03-2009, 05:09 PM
btween 35-40 is usual DD tuning..

i have never heard these at around 30hz i wonder how they would sound?? i think they would absolutely get extremely LOW! especially if dude listens to rap

cj407
05-03-2009, 05:10 PM
i've got a box designed for those....

cj407
05-03-2009, 05:12 PM
35 is about as low as needed...i've got the DD3510(well had right now its in packing to be shipped) and i've got a myxed track i did that gets down to 27 hz and is still great....so 35 is still able to get low... oh btw.. abn i've got a box designed that should fit....and only need $5 for the design....guaranteed to get the results you want.

ABNgang
05-03-2009, 05:13 PM
kkk for two of them?

cj407
05-03-2009, 05:14 PM
its 4 cubes tuned to 35 hz...sub and port up...

SicAudio
05-03-2009, 05:15 PM
3.531cu ft internal
38Hz tuning
¾: MDF
32” wide x 14” tall x 17.5” deep
Port = 12.5” tall x 3.5” wide
Length will be an L on either side : 12.5” deep and then 3.75” behind each sub

the port is between the subs.

SicAudio
05-03-2009, 05:17 PM
in an enclosed trunk you want to try and fire the subs and port both to the back of the car, usually. I got the design from the person that currently holds the world record for the loudest trunk car :) those of you that are competitors know who he is pretty well i would guess :)

thevic24
05-03-2009, 05:18 PM
imo, i have found that a 35-38hz tuning works really great for most dd subs.
my 2510 was tuned to 38hz
the 3510 that iam currently using is tuned to 37hz and the 1508 thats in my ava is tuned to 37 as well and both have absoultly no problems getting the "low" notes.

-vic

ABNgang
05-03-2009, 05:18 PM
kk so face the subs towards the rear seat? and will that tuning be good for hit all bass notes (or most you know)

DonH
05-03-2009, 05:19 PM
its 4 cubes tuned to 35 hz...sub and port up...

not to sure bout that bro...:crap:

how wide is the port and how tall is the box?

cj407
05-03-2009, 05:19 PM
you got pm ABN....

SicAudio
05-03-2009, 05:41 PM
kk so face the subs towards the rear seat? and will that tuning be good for hit all bass notes (or most you know)

just the opposite face it towards the rear of the car not the seat. and yes it will hit as low as 25 hz and has a huge db gain (depending on the car) between 45-65 hz. it was designed for music.

cj407
05-03-2009, 05:46 PM
a box tuned to 38 dipping all the way to 25....without a -3db rolloff...thats impressively ironic..

SicAudio
05-03-2009, 05:50 PM
it does have an f3 all boxes do but it will still hit audibly to 25hz depending on subs and power.

your good with this do the numbers and see for yourself :)

if it didnt how would a 3 time drive by champ do it :)
Look for the name Mike Stiers and eric alexander.

DonH
05-03-2009, 05:51 PM
a box tuned to 38 dipping all the way to 25....without a -3db rolloff...thats impressively ironic..

:sword:

oh boy

SicAudio
05-03-2009, 05:53 PM
:sword:

oh boy

lol nah I am tired of arguing with anyone.

DonH
05-03-2009, 05:55 PM
lol nah I am tired of arguing with anyone.

:laugh:

thevic24
05-03-2009, 05:56 PM
dd subs are real good for playing up to an octave below tuning, so if yo have a 38hz tuning then it should be good to almost 20 hz or so but in most cases its usually a better bet to go with a half octave. (about 28 hz in this case)
just my expierence with the different dd subs i have used.:)

ABNgang
05-03-2009, 05:57 PM
well **** i dont know what i should tune it too! 37 or 35!

SicAudio
05-03-2009, 05:57 PM
besides I was doing boxes b4 he was born lolz.

SicAudio
05-03-2009, 05:58 PM
dd subs are real good for playing up to an octave below tuning, so if yo have a 38hz tuning then it should be good to almost 20 hz or so but in most cases its usually a better bet to go with a half octave. (about 28 hz in this case)
just my expierence with the different dd subs i have used.:)

thank you :)

thevic24
05-03-2009, 06:01 PM
thank you :)

people always have diffrent results but for me, my 3510 tuned to 37-38 hz in 1.5cuft has no problem with 25hz test tones. now other brand subs, i cant speak for but the dd's seem to be ok with that.

SicAudio
05-03-2009, 06:08 PM
i have had several diferent models of subs work very well down to 25hz in that design :) hell even my brutuses will do it on 800 rms each. I have that box in the wifes minivan with 2 of them doing at least 135-140 (guesstimate based on other cars i have been next to that compete in that range) at 14 volts.
I would like to find someone in my area that has a TL to know for sure tho.

squeak9798
05-03-2009, 06:13 PM
well **** i dont know what i should tune it too! 37 or 35!

If you are doing this for daily listening, you would be hard pressed to actually hear any difference.

thevic24
05-03-2009, 06:13 PM
i have had several diferent models of subs work very well down to 25hz in that design :) hell even my brutuses will do it on 800 rms each. I have that box in the wifes minivan with 2 of them doing at least 135-140 (guesstimate based on other cars i have been next to that compete in that range) at 14 volts.
I would like to find someone in my area that has a TL to know for sure tho.

i have no problem breaking 140 with my 3510 in my s-10 on 2k+ and it is still above 137 @ 30hz and these #'s are sealed on the dash with a tl. i see some 139.9 bass race for me in the future:cool:

thevic24
05-03-2009, 06:14 PM
If you are doing this for daily listening, you would be hard pressed to actually hear any difference.

^^^exactaly.

SicAudio
05-03-2009, 06:17 PM
i have no problem breaking 140 with my 3510 in my s-10 on 2k+ and it is still above 137 @ 30hz and these #'s are sealed on the dash with a tl. i see some 139.9 bass race for me in the future:cool:

well this setup flexed the windshield enough to break it on a 30 second 50hz tone at 51.3 volts at the amp. what do you think it is pushing realistically?

oops that was supposed to say 51.3 not 53 lolz typo FTW !!!

thevic24
05-03-2009, 06:18 PM
well this setup flexed the windshield enough to break it on a 30 second 50hz tone at 53 volts at the amp. what do you think it is pushing realistically?

what ohm load?

SicAudio
05-03-2009, 06:20 PM
1 ohm
and i started to smell vc so it came down very fast lolz

thevic24
05-03-2009, 06:29 PM
well with box rise and all that good stuff i would have to guess...
i have my amp(fusion nvam 25001) set to 48v at the amp @ 1 ohm at 45 hz, 0db test tone and that = about 2200rms.
so my guess is at lest that much.

cj407
05-03-2009, 11:29 PM
2631 watts...breaking windshield???? doubtful

SicAudio
05-03-2009, 11:36 PM
well to be fair it had a good sized bullseye in it already lolz.
and uh the same setup with the square model sub on over 2000 rms for the pair broke my back window in my 87 Grand Am twice! but the box was also 5.8 cf after subs and port tuned at 32 as well. Mike Stiers designed that setup for me to the car to demo the product lolz.

SicAudio
05-03-2009, 11:37 PM
2631 watts...breaking windshield???? doubtful

how the hell does a 1600 watt amp put out 2600 watts?

cj407
05-04-2009, 03:20 AM
voltage^2 divided by ohm load = watts...so i highly doubt you had 51.3 volts of AC current coming out of the amp...with a 1 ohm load.

SicAudio
05-04-2009, 03:40 AM
i have a very nice 400 $ meter made by fluke that I bought from snap on so im sure it is accurate, i use it alot for many dif things. i think impedance rise? has something to do with it.

SicAudio
05-04-2009, 03:41 AM
the way i understood it as an example I was given, is this at 1 ohm about 41 volts IIRC is 1200 watts? is that right or even close?

cj407
05-04-2009, 09:19 AM
1681 if its 100% efficient.

SicAudio
05-06-2009, 10:58 AM
it is closer to 80% efficient it has very good electrical and the only time the voltage drops below high 13's is on long burps with a tone.

SicAudio
05-06-2009, 11:00 AM
so amperage x voltage divided by efficiency right?

cj407
05-06-2009, 11:03 AM
you got an amp that is 80% efficient at 1 ohm? doubtful

cj407
05-06-2009, 11:04 AM
and you may wanna find out what your box rise is before anything else....chances are it could possibly be near 2 ohm.

crawlinYJ
05-09-2009, 12:22 PM
imo, i have found that a 35-38hz tuning works really great for most dd subs.
my 2510 was tuned to 38hz
the 3510 that iam currently using is tuned to 37hz and the 1508 thats in my ava is tuned to 37 as well and both have absoultly no problems getting the "low" notes.

-vic

i've ran dd woofers for the last 3 years. i currently have a pair of 2510's. i would go anywhere from 38-42hz, depending on if you like more agressive upper notes or lower notes. i would probably go for about 38 to start. you can always cut the port down.