New to forum...what do u think - Page 2

quote:

ORIGINAL: Jharper

my current subs i have now are pretty loud, but i want louder, im pushing 134.7 DB, but i want more, i crave it haha, whats subs should i get?

 
 
You're definately going to want to throw some more wattage into your bass system down the road. 800w is good, but your going to want to bump that up if you want to make a stretch for the low 140's...134.7 isnt too bad, honestly.  If you wanted to upgrade your subs and keep that amp you should check out DC Sounds Level 2 subs. They are rated at 300wrms but can take 500 daily no problem. You could probably push low 140's with two 15"s. That is if you want to take up the whole cargo area...

haha i dont care at all, i dont haul stuff, id have to build a box tho, and i don want to lol. id rather have 12's but if 15's will be louder then why not.

You ahve to build a box, or have one built for you. Thats the only way you are going to get those higher numbers. What type of box do you have right now?
 
My motto is if you can fit it, go as big as you can. The more cone area you have the less effort it takes to get loud. For the most part quality subwoofers use the same motor for each series of woofer and just change the cone and basket for diffirent sizes. If you can runn 400w to a 10", or 400w to an 18", which is going to be louder? Its all about what you can fit and how much room you want to take up. I personally have always found room to go big
 
 
My old comp car/daily driver...148.3 sealed at the dash.
 

i looks like his box is sealed....maybe a simple reconstruction to a ported box will increase his numbers a little

my box i have now is sealed but it was fit for my olds cutlass i have, but when i bought my blazer i put the system in that and didnt have the money to build a new box, so it would be louder if i made a huge box? and would i have to port the box for it to be louder?

you dont need a huge box to be louder...but if you go ported it def will be louder

A properly build prted enclosure has the ability to get nearly twice as loud and produce much lower frequencies than a sealed box can. You shouldnt be scared to build one, its in fact very simple. You can get a design plan from someone online. You can have your local hardware store cut the wood for you, and then all you have to do is glue and screw. Building a custom ported enclosure is the cheapest and most efficient way to enhance your bass...

oh im not scared about building a custom box, ive done many including my grand prix, and my brothers eclipse show car, i just dont have the time to do it myself thats all. i planed on building something in the future, but imnot sure if i want to upgrade my subs yet or now, mine are pretty nice, and relaly loud as it is.

quote:

ORIGINAL: Jharper

so it would be louder if i made a huge box? and would i have to port the box for it to be louder?

bigger box can be louder but just because you make a huge box doesnt make it louder, there is a such thing as top big, if the box gets too big  its almost like running it in free air. so dont let people mislead you. and a ported box will make it louder
lets say a sub needs a 2 cube box and you stick in a 7 cube box its not going to be louder because you have abigger box.

I think generally they say porting will add around 3db......not twice as loud.
 
your saying if I hit 140 db sealed....port it and i will be at 280dbs?

quote:

ORIGINAL: blazinloud

I think generally they say porting will add around 3db......not twice as loud.

your saying if I hit 140 db sealed....port it and i will be at 280dbs?

280db is not twice as loud as 140db...decibels work a little diffirently then that...

quote:

ORIGINAL: blazinloud

I think generally they say porting will add around 3db......not twice as loud.

your saying if I hit 140 db sealed....port it and i will be at 280dbs?

Doubling the SPL is not going from 140dB to 280dB...  That would actually be close to 12x gain in SPL. 

A deciBel by definition can be boiled down to a ratio of powers/pressures/etc (dB = 10 * log(P1/P0) where P0 is the reference power/pressure/etc level and P1 is the power/pressure/etc level being sampled).  Pressure is proportional to the square of SPL (sound pressure level) in this case.  +3dB corresponds to a doubling of pressure.  +6dB is 4 times the ppressure and since pressure = SPL^2, this also is double the SPL.  So, to double the SPL, you actually need an increase of 6dB.

You are correct in saying that a 3dB gain is not going to be twice as loud, but it is a lot closer than you gave it credit for.  It will be 1.414 times louder in SPL terms.

thank you for that kyle.  now I dont have to post it.  Thanks bud!

Hey, I know a thing or two about what all of you ear bleeders are talkin' about from time to time.  LOL

[URL=http://s230.photobucket.com/albums/ee154/RiddleRampage84/?action=view&current=MVI_0097.flv][IMG]http://i230.photobucket.com/albums/ee154/RiddleRampage84/th_MVI_0097.jpg[/IMG][/URL]
here is a video of my ported box

thats a pretty cool break down swartlkk. i have never really known how to break it down. thats make feel a little better about my last numbers i put up, i doubled mine and + 1 db. first time i did a 113 in drive by and next time did a 120.

not bad, looks like theyre wangin pretty hard. You should try moving your port over to one side. I dont know if your port goes all the way to the bottom or not, but having your subs ina  common airspace can gain you ~3db...

not bad on the vid, i didnt see that you posted one, but im not sure it was the smartest thing to try to rec. your subs while driving

btw I was being sarcastic.....world record is like 177 or something.....

quote:

ORIGINAL: blazinloud

btw I was being sarcastic.....world record is like 177 or something.....

 
 
I know last year it was 181.X set by a single DD 18"...I have heard that the Pioneer truck topped it this year but i have not confirmed that...

i think you are right about the pioneer topping the record

quote:

ORIGINAL: cloak01ls

quote:

ORIGINAL: blazinloud

btw I was being sarcastic.....world record is like 177 or something.....

I know last year it was 181.X set by a single DD 18"...I have heard that the Pioneer truck topped it this year but i have not confirmed that...

Alan Dante did a 179.x at WF this year.....but he did do a 180.3 i believe it was.....the Scott and the Pioneer truck is running something like 12 subs and did a 180.x as well.  Im not sure the exact decimal but i know Alan is going for 183 this year.  Now tell me that 1 sub doing almost the same score at 12 isnt just amazing.