140* dbs in ae92 fxgt?

[deaf_rattle]

what will i need to get 140+db in my ae92 fxgt?
I have got 2x10" powerbase subs (only 1 in at the moment) and wondering if i will be able to achieve this with them, or will i need to go with 12s or 15s?

I prefer the sound of 10s, but im the aim of 140db im willing to make sacrifices.

I have vdo dayton 150watts rms components in the front, which are getting about 100watts rms each at the moment, not sure if its worth getting another amp to give them more power or not.

Im also looking at getting some pyle 6x9s for the rear parcel tray.

any thoughts would be great

cheers

[Erkel]

Stay away from Pyle, they are pyles of shit.

Anyways what model are the powerbase subs?

140 on a termlab with a couple of 10's is not that hard in a hatch it is just a matter of getting the box right and having plenty of power on tap.
At the end of day SPL is about efficiency, that is where most of your gains are going to be?

What amp do you have to power the subs?

I can get a system quoted up that would do it easily, but I need to know what you have to start with.

[fx'dwagon]

easiest way to do it is buy a big amp rockford db10001, and get two rockford 1000w 12ves i think they are the T2 model, get a very strong box made up and the correct diamensions for them and run 0/1 guage power cable and you will do it easy
otherwise i dont think you will get it out of 10s very easily, they will be alot of mucking around trying to get them "loud"

[deaf_rattle]

the 10s are


10 inch woofer with black cosmetics
45oz magnet, single 4ohm VC
Power Handling 250 Watts RMS /350 Watts Peak
Sensitivity 87dB @ 1W/1M
FS= 34Hz, QTS=0.50, VAS=41.3 Ltr
Frequency Response 34 Hz - 1 kHz


I have it running off a lanzar 2 channel amp (500watts max, so i presume probably giving the sub about 150-200watts rms) at the moment.

I was thinking about getting another one of those amps to run the other one, or selling that and getting a fairly decent amp to run the two.

My mate will be making my box for me, and the last one he did for me i was getting approx 135dbs out of it in my old holden (2xphilips 10" subs).

I had a listen to the pyle ones, and i was fairly impressed with them for 6x9s, but yeah not sure what i want to do in that front yet.

I will be making a new parcel tray with mdf, so maybe get some more components for the rear.

But for now, i want louder bass....

Will these 2 10s get me the 140db mark?

[Erkel]

You will need to get some decent power to the subs, ditch the lanzar amp and get a decent size monoblock or similar.

With the subs being SVC's you will have trouble loading the amp down.
They would probably be ok for the job though, It would be abit better if you had something with abit stronger motor and in a DVC.

Its largely just a case of getting the box right and getting power to them.

What sort of budget do you have for a new amp?

When it comes to box 2-3 cubic feet, 55-80 litres with say 40-50 square inch's of port area with the port tuned to 45hz would probably be a good place to start. The port being in the middle with the subs being on either side of the port.

[fx'dwagon]

and you will never get 140 out of it sorry but its the truth

[fx gt]

says the new poster to the old school user

go hard matt!

[deaf_rattle]

and you will never get 140 out of it sorry but its the truth

wheres that coming from?

I was getting 135dbs out of 2 philips 10s in a medium sized sedan.

so with better subs, more power, smaller car and hopefully even better box (last box was pretty awesome) 140db should be possible.

have you got any reason to think 140db is not achievable?

[method]

and you will never get 140 out of it sorry but its the truth

wheres that coming from?

I was getting 135dbs out of 2 philips 10s in a medium sized sedan.

so with better subs, more power, smaller car and hopefully even better box (last box was pretty awesome) 140db should be possible.

have you got any reason to think 140db is not achievable?

Depends what you use to mesure the spl. Now the standard is using the termlab equiptment and i very much doubt you will get 140 with such a setup.

The current NZ street A record is 145.4 Db and that was using a Resonant Engineering SX 12" which are pretty decent subs.
http://www.reaudio.com/html/images/sx_sub.gif

A extra sub will only give you arround a 3db gain. You will get the best gains by using a tuned bandpass box. OR if your feeling confident a good tuned ABC box will be the one to build. They are quite hard to tune though.

But no doubt your two subs will be bloody loud! Dont worry too much about your SPL levels if it sounds good. Thats all that matters in the end

[blackie]

yeah doubling the sound is only a 3dB increase is it not..
why are you specifically trying to get 140dB..

i dont get SPL..
you'll never crank it over 100 if your actually in the car!
spose its nice to say u have a 140dB system though

[cheese]

depends if its a proper system or just purely bass to hit the db

0 db - the quietest sound you can hear
20 db - whisper
35 db - new dual Power Mac 2ghz
50 db - rainfall
60 db - conversational speech
75 db - washing machine
85 db - big city traffic
90 db - hair dryer
100 db - tractor in use
110 db - chainsaw, rock concert
120 db - jack hammer, ambulance siren
130 db - jet aircraft from 100 feet away
140 db - gun shot, fireworks
175 db - rocket launch

i used to have mine somewhere between 110-120 quite a lot...mmm $&#$% ears...keeping sound levels minimal these days.

[blackie]

i used to have mine somewhere between 110-120 quite a lot...mmm $&#$% ears...keeping sound levels minimal these days.

haha same, until some whack off stole my sh*t!
i can thank him now for slowing down the deterioration of my hearing

[Caveman]

They are quite hard to tune though.

If you post up the specs for the sub i'll do it for free, and so would method but hes just a tight ass

ABC won't give you anymore db gain than a single tune ported so if db is the goal just make a mondo huge ported mofo with a nice big port and load it will as much power as possible. The port will need tuning of course but its no biggie.

And you'll definitly need new gear. 140db on a lanzar amp... sif thats like trying to get 450hp from a ct26

140db is a huge number. Dont worry about components or 6x9s in the spl equation, they wont do jack. The main stuff is the amp and sub.

I've just built a box for a mate. He runs a single 10' dd3512 (dual voice coils) and I built him an 80L ABC with mega mega porting. He runs 2000W RMS through it and method and I will testify, sitting in that car at full volume would make you deaf in a matter of seconds.

I'd guess that thing would be somewhere close to 140 - 143 db.

[deaf_rattle]

yeah i wasnt sure about keeping that lanzar amp and getting an identical one to run the other sub (one amp per sub) or getting a better single amp to run the two.

I am going to try and track down some vdo 8" 3 way speakers for the rear parcel tray and look at powering the subs with one of the spare amps i have.

then might look at getting a better amp to run the subs once thats all done.

een if i break 135ish dbs ill be happy, as thats what i was getting before, and anyone that heard that swore i had 2 12s in there haha

[cheese]

i used to have mine somewhere between 110-120 quite a lot...mmm $&#$% ears...keeping sound levels minimal these days.

haha same, until some whack off stole my sh*t!
i can thank him now for slowing down the deterioration of my hearing

yeh it sucked, because the louder my sounds went the better it sounded hahah and i couldnt make them distort, just so loud n clear, wouild have been interested to get a db test done on it and see because i got real strong loud mids. mmm~~~

[DJ]

140db in a FXGT?

Take off the whole muffler/cat/silencer and attach the other end to it with about 4 or 5 megaphones?

[method]

yeah i wasnt sure about keeping that lanzar amp and getting an identical one to run the other sub (one amp per sub) or getting a better single amp to run the two.

I am going to try and track down some vdo 8" 3 way speakers for the rear parcel tray and look at powering the subs with one of the spare amps i have.

then might look at getting a better amp to run the subs once thats all done.

een if i break 135ish dbs ill be happy, as thats what i was getting before, and anyone that heard that swore i had 2 12s in there haha

You could get a DVC sub and another lanzar amp and run them both down to 2 ohms per coil.

Or a bigger amp + bigger sub. Depends how much you want to spend really.

And set aside arround $40- $80 for the box if you want to make it your self.

[Flyboy]

140db in a FXGT?

Take off the whole muffler/cat/silencer and attach the other end to it with about 4 or 5 megaphones?

One of my mates pulled 145Db on Termlab yesterday...

[Muzzie]

and you will never get 140 out of it sorry but its the truth

BULLSHIT!!!!!!

I know some one who got 139dB out of ONE single 8 inch, running about 1000watts RMS. So 140dB out of two 10s is F**KING piss easy!

[DeeCee]

Calm down Muzz.. 140dB is obtainable, but its based on box design, amp power available and efficiency of subs as a well as cabin transfer gain of car and acoustic properties of car.

Hers a picture of a box that pulled 145dB on Sunday at the Slap event. This box weighs 55kg without subs.. 2 Fusion powerplants both rated at 450wrms = 900wrms. Box is 3.8 cu ft with a 6" port 27cm long. We used 2 Caliber 2000D monoblock amplifiers strapped together at 1 ohm pushing 2500wrms into the subs and scored a high of 145.1dB in the corolla..



140dB is obtainable.. but don't think that its an easy thing.. take into account some of the things i initially said if you want to go breaking 140dB.
Depending on the PB's and the box design, you'd have to shove a decent amount of power down them to ensure that the it goes loud. Also, you'd want to burp 140db (ie not sit in the car..) please take into account that testing was down outside of our corolla with Aer0 using a remote to burp the subs.