some quick advice for a noobie plz

[mr man]

okay so im lookin to make a budget system and spend hopefully under 500 total. So far all i have is a box for 2 12'' subs and thats not included i nthe price.
im guessing its best to go used in this price range?

also i did come across somebody selling some stuff but i am not sure how good of a deal it is.... an rockford amp with an rms of 800w not sure on peak there asking $300 and 2 12''rockford subs not sure about specs on those but they were all used together and are aparently high end stuff which he wants 150 per sub so im lookin at 600 which is a bit above what i wanted to spend but may consider if its a good deal.
so what do you guys think?

[TakeABao]

Skip on that deal. You can do much better.

What do you need? Do you want to go with a pair of 12"s or would you consider a single 10" or 12"? What type of music do you listen to?

[mr man]

honestly im not going for comp i just want some solid base thatl have some punch in it...i would tkae any suggestions... music would vary some electronic/dance/house/rap
i would like to keep the price to a minimum like 300 would be great but i dont know if that is possible the cars a 90celica hatch so i dont think it needs something huge to make good sound
alright thx for the advice ill pass on the rockford stuff

[cam2Xrunner]

I'd go with a single 15" sub in a sealed enlosure pointed up.

What model Rockford amp was he selling? Find out the model # and the condition and get a price on just that. If it's a good deal, then look for a sub to match up to it.

[lucanhookup]

1 15inch kicker l5 with a kicker kx600.1 amp and a sealed box like cam2xrunner. you want spl right?

[cam2Xrunner]

If you want SPL, you go with a ported box, but in the hatch of a celica, it's going to be tough to fit a ported box because they have to be built bigger.

Sealed is going to sound better and take up less space.

[lucanhookup]

cam2xrunner, can u explain the diff between ported and sealed. i know that ported is for boomy bass and sealed is for tight bass but is there more to it?

[cam2Xrunner]

This post by P.H. at the Sounddomain forum best explains it.

Infinite Baffle ("Free-air")

Advantages:

* No box necessary
* Usually cheaper to design and implement in your system


Disadvantages:

* Requires that a good seal be obtained between the front and the rear of driver
* The responsibility for damping cone motion rests solely on the driver's suspension
* The suspension must be extremely hearty and long-lasting to withstand high power applications



Sealed

Advantages:

* Small enclosure volumes
* Shallow (12 dB/Octave) roll off on low end
* Driver does not unload below tuning
* Excellent transient response/ group delay characteristics
* Easy to build and design
* Forgiving of design and construction errors


Disadvantages:

* Not particularly efficient
* Increased distortion (due to cone excursion) over ported design
* When using high power and small box, magnet structure is not in an ideal cooling environment



Ported/Vented

Advantages:

* 3-4 dB more efficient overall than sealed design
* Less distortion (due to cone excursion) over sealed alignment
* Magnet is in good cooling environment
* When properly designed, a ported alignment can yield a much lower anechoic F3 than a sealed alignment.


Disadvantages:

* Size
* Driver unloads below tuning
* More difficult to design; can result in boomy, nasty sounding bass if misaligned



Bandpass

Advantages:

* When properly designed and implemented, can provide superior LF extension and efficiency
* Cone motion is controlled more and therefore mechanical power handling is increased
* Cones are physically protected from contents of trunk sliding around


Disadvantages:

* Difficult to build, and very sensitive to misalignment due to calculation or construction errors
* Their characteristic filtering often masks any distortion that occurs as a result of amplifier clipping or overexcursion and thus will give the user no warning that the driver is over-stressed and about to fail
* Need substantial mid-bass reinforcement to make up for narrow bandwidths in efficient alignments
* Transient response is largely dependent upon the alignment chosen...wider bandwidths will result in sloppier performance, narrower bandwidths (and thus higher effiencies) result in better transient performance
* They can often times be quite large

http://forum.sounddomain.com/forum/u...=069930#000000

Found in the Subwoofer Solutions Frequently Asked Questions & Tutorials
http://forum.sounddomain.com/ubb/ult...;f=11;t=069893

Alot of good info there.

[RedPhoenix]

What about Diamond D5600.2 amp for $200 or less and 2 diamond D3 12" subs for $200 or less on ebay new. Not bad for the price, although you can always do better.

[mr man]

so my best bet to find cheap stuff is either on ebay or to find people selling stuff used then?
and btw what does "SPL" mean ?

[TakeABao]

Originally Posted by mr man

so my best bet to find cheap stuff is either on ebay or to find people selling stuff used then?
and btw what does "SPL" mean ?

Yes.

3 "categories" of subs:

SPL = Sound Pressure Level (ex. DirtySouthV6.....two RL-p's in a fatty ported box)
SQ = Sound Quality (ex. me, Cam2XRunner, etc.)
SQL = Sound Quality w/ Loudness (ex. eddiem67, klaymen333, etc.)

[cam2Xrunner]

Here's an IDQ15 for 125.
http://forum.elitecaraudio.com/showt...hreadid=117042