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View Full Version : what DB readings should i get with a single DD 2515?



marquisbrah
06-01-2011, 12:32 AM
i have in the trunk of a grand marquis with a kx 1200.1 amp. i got 135:(

the guy i bought the sub sold the custom box for the DD. he said it was reading 144 dbs at 28hz.


mine was 135 at 48 hz.

he used to have the sub in a ford ranger, and mine is in a 00 grand marquis.

what factors play in getting such a big difference?

the guys that did my reading said that it would only be a bit wider.

kr15
06-01-2011, 12:37 AM
You got it from Chris? Cabin gain makes a HUGE difference for 1 thing...next, his box was designed to peak low. If your resonant is in the 40s, his box would be tuned to low for your application. Lastly, he had his on a Audison 1k which is about as clean as you can get for power

---------- Post added at 08:37 PM ---------- Previous post was at 08:37 PM ----------

And for reference, i did 141.7 on 544w with a single sa12 in a trunk car...so you definately have room for improvement

BlactimusCrime
06-01-2011, 12:45 AM
Those cars are hard to get loud without removing lots of sh|t.... I have 4 sa8s on 2k+ in my trunk, and im only doing 138.x @34hz

marquisbrah
06-01-2011, 12:45 AM
You got it from Chris? Cabin gain makes a HUGE difference for 1 thing...next, his box was designed to peak low. If your resonant is in the 40s, his box would be tuned to low for your application. Lastly, he had his on a Audison 1k which is about as clean as you can get for power

---------- Post added at 08:37 PM ---------- Previous post was at 08:37 PM ----------

And for reference, i did 141.7 on 544w with a single sa12 in a trunk car...so you definately have room for improvement

yea how did you know? well the box he used to have the dd was already sold so i bought another box from him, which is great but he specified that it wasnt built especially for the sub. i just wanted to know if i can expect a noticeable difference in db gain from a proper enclosure. im barely getting into car audio so i dont really know where to start : car speakers, enclosure, amps. its nice hobby though

Phoenix Risen
06-01-2011, 12:52 AM
the enclosure will make or break a system.

thegreatestpenn on here was hitting 140 or just over with a pair of explode 12s.

moral of the story is, its all in the box.

MisterDeadeye
06-01-2011, 12:57 AM
the enclosure will make or break a system.

thegreatestpenn on here was hitting 140 or just over with a pair of explode 12s.

moral of the story is, its all in the box.

That's going a bit far, but yes, the box will definitely make a huge difference. A sub and a box not built specifically for the sub is like closing your eyes and picking clothes at random. A sub and box built specifically for said sub is more like a custom tailored suit.

Phoenix Risen
06-01-2011, 01:00 AM
That's going a bit far,

maybe, but it gets the point across.

marquisbrah
06-01-2011, 01:15 AM
yea i know that now. im thinking of switching amps. however i wanna work with what i have now for the time being. dont have a whole lot of money for another alt or a bunch of batteries. probably gonna stay with the same amp for a bit. so until then im gonna try to upgrade box or highs. im seriously lacking highs right now but i also want to get a box custom built. not really trying to add more subs until my setup is perfect and im getting the absolute most out of it.

Buck
06-01-2011, 01:17 AM
I did a 133.5 at 38 hz with a dd 3510 off ~1000w in a t-top camaro. Box was tuned to 28 hz too lol.

Buck
06-01-2011, 01:20 AM
If you want to hit numbers, tune higher. He was tuned really low if he was hitting 144 @ 28hz. That's a great score you're going to have a hard time beating that.

marquisbrah
06-01-2011, 01:38 AM
If you want to hit numbers, tune higher. He was tuned really low if he was hitting 144 @ 28hz. That's a great score you're going to have a hard time beating that.

well not necessarily trying to beat the score, just wondering what the difference was. dont know if it was his box, cabin, or amp. i still love the sub, but i want to be as loud as possible in my car with that one sub. got a good deal though, so im really liking it.

Buck
06-01-2011, 01:43 AM
Do you know the specs of his box? It sounds like his box is tuned very low.

RAM_Designs
06-01-2011, 01:57 AM
It sounds like his box is tuned very low.

Definitely...wish I could peak at 28hz. :(

Buck
06-01-2011, 02:55 AM
Definitely...wish I could peak at 28hz. :(

Me too. It think I might be still in the low 40's, maybe just maybe high 30's with my low tuning.

kr15
06-01-2011, 03:21 AM
his box did peak at 28hz...have seen him at many shows and he was always around 43.5-44 with it... his setup was a downfiring setup..he also had work done on that box by basically the 2 most respected shops/box guys in Fresno......that said, your kicker is actually a pretty solid amp. I dont know how hard those cars are to get loud, but with an optimal box, you will absolutely see a huge difference..one of my teammates is local, and does good box work...pm me if you would like

marquisbrah
06-01-2011, 03:28 AM
I have no recollection of the tuning of my box... I think he said it was 38 or so. I actually have no clue so this could be a totally different number. All i know was that mine was 135@48hz. Im still unsure on how these numbers come about but as far as i know, 144dbs at 28hz is about twice as loud. Again, i havent had much experience with this until about a week ago

marquisbrah
06-01-2011, 03:41 AM
his box did peak at 28hz...have seen him at many shows and he was always around 43.5-44 with it... his setup was a downfiring setup..he also had work done on that box by basically the 2 most respected shops/box guys in Fresno......that said, your kicker is actually a pretty solid amp. I dont know how hard those cars are to get loud, but with an optimal box, you will absolutely see a huge difference..one of my teammates is local, and does good box work...pm me if you would like

YGPM.Yea chris seems legit (only knew him for about 30 minutes) and as soon as i talked to him, i could tell he doesnt fukc around lol yea he recommended i go to audio innovations or clovis custom audio. I was around AI and i stopped by. The price was a bit out of my budget, but im willing to save up. and these cars are fairly difficult to get loud.

Buck
06-01-2011, 03:41 AM
Time for a wall!

marquisbrah
06-01-2011, 04:05 AM
Time for a wall!

Ive given this some thought but for now, im more leaning toward a proper box and some nice car speakers. Im pretty torn between the two, and its giving me a headache.

kr15
06-01-2011, 04:06 AM
audio innovations or clovis custom audio
those would be the 2 shops, and IF you have the money, worth every penny

Buck
06-01-2011, 04:09 AM
If you need a different design I can draw you one up. By how you've described his enclosure, it might not be that much louder. If you could get the specs on it I could tell you.

marquisbrah
06-01-2011, 04:45 AM
those would be the 2 shops, and IF you have the money, worth every penny

yea without a doubt but the issue is i DONT lol but im willing to save up. unless your teammate can do it.

marquisbrah
06-01-2011, 04:47 AM
If you need a different design I can draw you one up. By how you've described his enclosure, it might not be that much louder. If you could get the specs on it I could tell you.

umm only specs i can get would probably be external measurements. thats about as much as i can probably do. ill post them in the morning when theres light to actually find a tape and measure

sacsking916
06-01-2011, 12:56 PM
Ray at audio innovation is a genius, but I hear he charges a pretty penny. His Hummer os ridiculous

outsideshot23
06-01-2011, 01:00 PM
the enclosure will make or break a system.

thegreatestpenn on here was hitting 140 or just over with a pair of explode 12s.

moral of the story is, its all in the box.
i know guys that can break 150 for about 175$.. defiately experience and box building is a must

marquisbrah
06-01-2011, 03:20 PM
Ray at audio innovation is a genius, but I hear he charges a pretty penny. His Hummer os ridiculous

Yea he definetly knows what hes doing. He metered my car for free and made some suggestions. Dude gets down

marquisbrah
06-01-2011, 03:24 PM
i know guys that can break 150 for about 175$.. defiately experience and box building is a must
If only he was local :( lol

sacsking916
06-01-2011, 04:04 PM
Yea he definetly knows what hes doing. He metered my car for free and made some suggestions. Dude gets down

Yeah he does. Talked to him at a few shows last year, dudes hella coo.

marquisbrah
06-01-2011, 04:20 PM
Yeah he does. Talked to him at a few shows last year, dudes hella coo.

Probably going to get my box from him, unless i decide to go with the guy kr15 knows

marquisbrah
06-01-2011, 04:26 PM
Yeah he does. Talked to him at a few shows last year, dudes hella coo.

Probably going to get my box from him, unless i decide to go with the guy kr15 knows