power vs cone area

Mithrandir · Post by **Mithrandir** » Sat May 21, 2005 10:24 am

well im just tryin to hit 140 with normal music not test tones and such. I have an oldsmobile cutlass ciera atm and 2 infinity reference 12s, the box i have em in is way to small though.

71buickfreak · Post by **71buickfreak** » Sat May 21, 2005 10:46 am

hitting 140 with regular music would be similar to accomplish with the same box. you will need to tune the box for SQ, which means below 35hz. otherwise you will tear up your sub. it can still be done.

71buickfreak · Post by **71buickfreak** » Sat May 21, 2005 10:47 am

have you ever heard 140? you realize that is as loud as an F16 at take off. its friggin brutal.

Mithrandir · Post by **Mithrandir** » Sat May 21, 2005 10:55 am

i thought that was like 150

Post by **GlassWolf** » Sat May 21, 2005 12:05 pm

140dB is damned loud, and I don't think you'll hit it with your Infinity subs. Those are pretty weak twevles, no offense. They're decent for SQ, but they just aren't that loud.
A paif of CompVR 12" would do significantly better than what you have now if you gave each 12" about 2.5cu ft of enclosure and went ported, feeding each sub about 400 watts RMS.
if you vent the rear deck of that Ciera and do that you should be in the 140s if ya have a strong front stage to go with it.

audiobass10 · Post by **audiobass10** » Sat May 21, 2005 1:09 pm

KikiTheCat wrote:140dB is damned loud, and I don't think you'll hit it with your Infinity subs. Those are pretty weak twevles, no offense. They're decent for SQ, but they just aren't that loud.
A paif of CompVR 12" would do significantly better than what you have now if you gave each 12" about 2.5cu ft of enclosure and went ported, feeding each sub about 400 watts RMS.
if you vent the rear deck of that Ciera and do that you should be in the 140s if ya have a strong front stage to go with it.

Agreed. Or you could run a single 15 CompVR like i'm running. I haven't metered it yet, but it's VERY loud. I was just listening to it a few minutes ago and when I play a good bass song at about 2/3 volume it's enough to really feel the pressure on my ear drums and today it gave me a head ache for the first time. I'm gunna start settlin down on the volume knob. I love playin it loud, but I know in the long run it's better for my ears to keep it at moderate listening levels and only play real loud volumes every once in a while.

71buickfreak · Post by **71buickfreak** » Sat May 21, 2005 1:50 pm

yeah, those INF's probably won't get it done. I was thinking it, just didn't say it. 1 Sub is capable. Like I said, I am running a single Rockford Power HX2 10" in my oncvertible and I am knocking on the door of 140. the right box, big power and a sub that can take it are what you need.

Mithrandir · Post by **Mithrandir** » Sat May 21, 2005 2:11 pm

what about 2 alpine type r 12s?

I need to sound deaden my rear deck because it sounds weird the 6x9 holes in it are open if thats what you ment by venting my rear deck(i blew the sonys lol).

How much do you think I could get for my 2 infinitys in a box on ebay? about 150 or 200?

my front stage is weak thats why im not too worried about more bass atm. I need front components or somthin but i lack the space for the 6 1/2s tweeters i could put in the dash where the 3 1/2s are now.

Post by **GlassWolf** » Sat May 21, 2005 2:52 pm

two type-Rs would do it as well.
you'll want to consider some good components for the front with an amplifier for them. that'll help em keep up with harder hitting subs.
you'll want to consider venting the entire rear deck if you want more coupling with the trunk air.
no idea what you'd get for teh Infinities on eBay though.
sound deadening will help increase efficiency and interior SPL to an extent. It'll sound better.

Mithrandir · Post by **Mithrandir** » Sat May 21, 2005 4:13 pm

yeah, I think i might build a new box for my infinities, they almost make my vision blurr when certain notes hit so i figure porting em will make em decently louder. What are good, not too expensive components, cdts are good i hear but dont have much midbass. I also heard RE comps are good.