hey guys ive heard dudes saying their hitting 140db off a tsw 384c 15 inch which can only handle 350rms are they blowing smoke or are they telling the truth, coz you can pick up those subs from strathy for like $130

did you know someone got 160db with a pair of 6 by 9's? (or was it 156....)

Everything's possible to some extent, what meter was that on? Audiocontrol?

ive hit 140 with 2 305c's.. 12", can be found for about $90.. you might wanna consider them that was in a sedan without the seats folded down too, imagine what they would do in a hatch! on termlab too

305c's can handle a hell of a lot more power than they are rated for, i couldnt see the 384c's being all that great.. they have a tiny xmax, lower power handling, tiny surround and generally dont seem as good

what car?

what amp?

what box?

what meter?

- Stooge007 out

I've done 140.0 at 33hz with my 305Cs with my seat up.

Not all too bad for woofers that cost me $90.

i think they were full of crap, with their 15 inch pio, it wasn't even ported, and was being fed less than 300rms, in fact im pretty sure they made up their db reading...i hate stooges that make up crap

It would have alot more to do with the car then the subs. Hell my car with 2 subs and a total of 480rms burped 132DB, that's a Long Wheel Base VAN, huge amount of air to push. Put one of my subs in a mates Toyota Corolla Hatch with 260rms and got 138DB, go figure?

thats right about the car thing ! hatch crank more than bigger cars!
be cause c of the space in the car

what about utes...
thinking of 1-2 subs behind the seats... hoping that will crank a fair bit

The pioneer 15inch subs are excellent value for the price. They go louder than the 12inchers too providing you have enough room for a box,


Everyone at autosalon would say the opposite to you, even the CAA members that sat in the car were blown away.

I had 500wrms into each sub from a crown 240volt amp running flat out for over 6 hours straight. It had clipping indicators so it was indeed running full power. For a sub that cost $130 each is just exceptional

The power handling is a number made up by the manufacturer and real world results prove different. Also 384C has a smaller surround as smaller surrounds are actually louder as you have more surface area. The surround on the 15inch pioneer is good enough for well over an inch excursion.

Xmax means f*** all when it comes to volume. The second loudest car in the world uses woofers with an Xmax less than the pioneer 15inchers. Sound Quality of the 15inch pioneers are also excellent if set up correctly like mine.

we have got a few cars up here with the 384c and they are getting 138 - 139db on the temlab both only running kenwood kac-7252 amps 500rms..

one is lancer sedan, each sub is in a 1cub box peaking at 69hz pulling 138.2
and the other is a suzi swift with a sealed box (1.8cube) and it pulled 139.8.
we then found out that the amp had not been touched from factory settings and they were using high volt lines into the amp as the h/u had no rca's

So you're saying DD's would be louder if they had a smaller surround?

*Pulls up a chair and cracks a beer open*

alot of lower end gear goes pretty loud with low power... the difference comes in with dedicated spl gear and higher end subs when you put more power through.
with less power you will often see cheaper subs keep up and sometimes be louder. as they are designed to top out with that amount of power. but when the real power comes in and you want some real numbers the cheaper subs have hit their limit while the higher end gear hasn't even broken a sweat and just keeps going.

It called efficiency

sensitivity dB/SPL 96

hertz HX250D

rated at 450wrms ill be giving it up to 700. its only a 10 but it shud go quite loud in a 2seater ute...

Yes and no.
if with 500 wrms 2 woofers get the same score then with 3kwrms one woofer is heaps louder and the other blows up/score barely goes up.
i wouldn't call that efficiency but each to their own i guess.
i have just finished watching the whole series of lost and that soyer guy is fantastic at one liners he brings them out rather frequently actually and they are always gold. thankfully the writers take time to think them through and make sure they will work. otherwise they would just be silly and poorly thought through and the effect of them would be lost.
I like that show.

Cheaper woofers or speakers whateva you wanna call it generally do go loud with less power due to their efficiency.

Speakers which have a higher power handling generally are less efficient therefore requiring more power to get loud.

more power in big woofers are the loudest, if u have not much power go for cheaper/more efficient woofers.

Nah the hertz sensitivity ratings are measured differently, like MAX power ratings. If you measure them at 1 volt at 1 metre they are all below 90db sensitive. Just put the specs into a box design program and it will calculate the sensitive for you.


Hahah you noob, having a 1mm surround the cone couldn't move up and down. Too small it will restrict excursion, too big and it will restrict sensitity. The pioneer 15inch and DD subs have perfectly sized surround for their excursion capabilities.

The 12inch pioneer has a surround is twice as big as it should be, it would be fine if it had over 4inchs of excursion, but it has less than half that.

Thats why alot of the cheaper subs are louder at lower power levels, they generally use smaller surrounds giving them more cone area and increased sensitivity, they dont need a massive surround as they dont have massive excursion. That combined with the cone can be lighter as wont be under as much stress in terms of flexing.

Number one. Using the word noob?
number two


Sensitity? Sounds dirty.

I think my point was not so much whether you were correct or not, but the way you made such a blanket statement without explaining it

Remember not everyone knows to question the advice they receive on a forum

And I'd say that there is no such statement as smaller surrounds or larger surrounds being better....
As long as it is an appropriate ratio between surround and woofer, and the surround can withstand high excursion, and it's all calculated with the motor strength taken into account... then you have the right subwoofer

No point having a huge surround if your motor will bottom out with 5mm linear xmax... but for a sub like a Boston G5 with a 3-inch xmax, you might need something a little bigger And because it has more excursion it can move more air, just like a woofer with a larger surface area can move more air.

As you can see, your statement wasn't exactly clear on that was it.

DD surround (top) vs. common 'fatboy' surround.

i made no statement
dont bring me into this

You know I thought about you when I wrote it
And I wondered if I should change it cause I know you search "blanket" every day and look for matches.

But it was just the right word to use so I went with it

hahaha
i dont search for blanket
i am the blanket
threads come to me

might I suggest the 305C, or 306C over the 384C?

305 and 306 can be had for around $96 (assuming you can find someone still clearing old stock) and $113 (just tell them your friend got one for this price, as quite a few places are doing them for this price) and they are a very capable woofer. not the best sounding, but a hell of alot better than the 15inch pioneers.

I have hit 144 dB with 2x 256c and a 800w rms amp.

That's a nice Aeroport

Great score too!

thats an impressive score 2 10's was that on termlab?

Yea, that was on termlab. When i put a rockford bd1500 amp those pioneer subs hit 145,1.


That is the amplifier for 144dB (the 1800, 1400 is for speakers).

I got 145.7 from two of our cheapest 10s, the 1010.

This was in a box built for his old 12" woofer, just a new face screwed over the top with two 10" holes.

We're going to tweak it, I reckon 147-148 is possible.


"Lower" model woofers generally have less moving mass and lighter suspensions, making them more efficient. Of course if you stick 3000W into them bad things are likely to happen!!

Phil

two 1010's are better than pioneer lower specs subs i mean one cost 90 and the other about 200

its a good score in my limited spl knowledge. we all kno DD Poo's all over pioneer. from bottom of the range right to the top IMO

Yeah, and it's also alot more expensive.

Wich amp did u use for the DD's?

I just came back from PIMP MY RIDE in bundy, im running two 12" 305 pioneer & getting 139.6DB at around67Hz
Thats with a VR2100 pushing them in a swift
tryed every thing to bring the HZ down, was getting around 70HZ but failed
So im building a new box over Xams will push them till they die
If not will keep then till the next PMR show & get some one to push them till the smoke/blow