How much bass do you have in your car ?? ( how many watts)

 

watts have little effect on overall bass, compared to subwoofer/box combos.

i know people hitting 150 with 1100w, and i know people that hit 140 with "2000" watts.

 

well how about how many DBs are you hitting

 

2,500 watts

 

not enough for 2 15s! but really many of those high-rated amps are very over-rated... be very careful to check out the fuse ratings and such...

 

Its been a while since I have competed but something on the order of 133db (146db Outlaw SPL). With one old-skool 12" Rockford Power running off an Eclipse 3321 (75x2).

 

I have an amp rated at 150x2 for my bass and have no trouble hitting over 140dB.

My system was powerful when I built it, but doesn't produce anywhere near the power of the new systems that use the Class D amps for bass. Then again, my subs are a lot more efficient than most of the new ones, so I didn't need as much power to get the same level of output.

 

I have 200w RMS (@4 ohms)x2.

200w per sub.

10 inch subs.


I have no clue as to my dB rating. I keep missing audio competitions.

A friend of mine who has been in many competitions figures I might be getting about 135dB or so.

 

None, my rear amp is dead and my front 4"s have blown apart and the half-attached coil cover slaps against the grill with any attempt to reproduce bass. No subs...

Maybee about 1-3 watts at most...at which point I'm covering my ears in agony.

 

I hit 146 with my old twin 10's(alpine ZR) but now I have 2 12'' type R's that hitt a bit deeper. Don't even remember what my sub amp puts out, but it was the most powerful Alpine V12 you could get 4 years ago. I got out of the stereo equipment and got into going fast a few years ago!

 

12 pounds....

 

at what frequency do they test the db at? because I like the lower frequencies better, and I'm not gonna tune my box higher just for volume purposes...

 

well i dont know how many DB im hitting myslef but i have to amps a 1000w to power the 2 10" 1100 watt sony explod subs then i have a 800w amp to power the 4 speakers whick i have 220w pioneer 6x9s and stock 4x6s so im guessing i have a total of 2700watts going through my system

 

What kind of amps? The amount of power going to your 4x6s and 6x9s is basically neglegable when it comes to SPL. For one, if they're running high-passed (like they should be), you will only use minimal amounts of power for them. Secondly, the output of those speakers doesn't contribute to your SPL measurement, because that's done at low frequencies.

With 2 10" sony subs, I'd say you might get 125-130dB. Maybe.

Generally most sanctioning bodies have a cd with a few tracks to choose from. Most of those tracks offer sweeping tones so that you can choose whatever frequency provides the most output.

 

i didnt know what any of that SLP stuff meant when i had to choose one and there both sony xplod amps and i have no clue what your talking about i dont know anything about that stuff i just know how to hook it up

 

SPL = sound pressure level.

It's the way you measure how loud your car gets.

 

in my case, i think it might be more effective if they just test the sound coming from the tailpipe.

 

lol...id rather put money into my motor than audio but i have a v6 and no matter how much muney i put into it it still wouldnt be as fast as a 350

 

Heres a silly question...Last time I competed was probably like 3 years ago, and at the time classes were determined by total watts. There was some discussion at the time that at least for spl purposes of dividing the classes up using overall cone area instead of amp power. This always seemed like a good idea to me since i was running 1 12" at the time. Anyways did they ever change formats???

 

USACi still uses wattage, but i think most everyone else uses cone area.

 

ack.. that means that two 15's would be a BAD thing to have if they measured by cone area... the only setup that has more, is that one guy who has 4 12's in his 3rd gen...

 

Pretty soon cone area is going to be just as useless as power specs. As excursion gets greater and greater, cone size becomes less of an issue.

 

i have no clue on what you guys are talking about

 

About stereos in general, or the competitons??? Be a little more specific with your questions and ill try to help you out.

 

I noticed that. It kind of makes me wonder why you started this thread in the first place.

The best thing you can do is read the posts here. The more you read, the more you'll start to understand. Reading the "how to" articles in the tech section of the website will help you gain a basic understanding too.

 

133.5 dB with a RF Punch 100 DSM and one 8 ohm MTX 12" Thunder 3000.

EDIT: I was just reminded by a friend that it was 135.5 dB

 

what I don't understand is why is it so hard for speaker manufacturers to make high-excursion woofers? They don't seem much more complex than regular speakers... give them a longer voice coil, appropriate room to move inside the casket and voice coil, and give it a fatter, over-sized surround material... I'd say it might cost less to have a high-excursion 10 than the cost of a standard 12...

but the problem you get with going REALLY high excursion is the response time, and the quality parts required to keep it all working. It is a lot harder for a speaker to move 5 inches back and forth to a 60hz frequency, then it is to move 2 inches.... I'm guessing it requires more power to, since you are converting more energy into motion of the voice-coil stuff... Probably companies will start making 15-18" high-excursion speakers, because most people can't fit more than one or two of those suckers in their ride...

hrm, one other thing... I wonder... since the speaker is moving so much back and forth, would you NEED a ported box? I mean that would be insane pressure in that box! Also, if it was a ported box, it might sound kinda weird since it would be sucking in a whole bunch of air (the same amount as its expelling)... wonder how that would sound, and if you could make some sort of valve, and like an intake on the box, and an exhaust "port" hehe that would be interesting... I bet that idea would work with any ported box and improve the sound quality... I guess you would just need some high-speed valve of some kind... hrm... oh well that's sorta off topic, but so is almost everything we are talking about... cheers!