Recently bought a brand new out of box Option Audio Sub (2500W/1250RMS) 12INCH, DVC. Apparently this sub is meant to be sick for SPL but soo far not overly pleased with it. I had 2x 15inch cheapo subs with roughly 300rms each and they shat over this sub soo far. PLEASE HELP PAID MONEY AND NOT PLEASED HAHA.

This is the AMP
http://www.dnaaudio.com.au/amp1560d-digital-mono-block-amplifier

And this is the SUB
http://www.optionaudio.com/subwoofers_OA12XTM11BOX.php

Thanx Guys

Ok first of all are you running the Sub at 1 or 4 ohms? Since its a dual 2ohm sub these are your choices. At 4 Ohm you should be expecting about 510wrms, which isn't really anything fancy especially for SPL, if its 1 ohm then you should be seeing about 1560Wrms which is a decent amount to get good volume.

Use this following link to find out what you have it wired to.
http://www.rockfordfosgate.com/rftech/woofer_wizard.asp?submitted=true&woofer_qty=1&woofer_imp=3

Also being brand new you need to give it some time to break in aswell, it shouldn't be withholding a massive amount of volume but once again it depends on how you have this sub wired and how you have had the previous ones wired.

In order to help you further, or more so in the future please provide more details from the word go like:

Previous
Box size?
Ported or sealed?
Impedance (ohm rating) they were being run at?
LPF Setting on the amp?

Then compare this to what you have now.

Its in a prefab enclosure so im not suprised, and guess what? 2 15" subs are bigger then 1 12"! More cone area is better obviously but it comes down to box size, type, tuning and yeah impedance. Dont expect bugger all out of it how you have it set up now

Oh and add to it your using a DNA audio amp. . *sigh*

I used to have 2x 12" subs in a Bandpass box running from a 2x40W RMS amplifier.
They were louder than the single 12" sealed unit I have now, which is running from approx 250W RMS!

Actually, that's the same scenario that you describe and to me it sounds like there's no replacement for displacement - or at least bigger cones move more air, more easily.

To the OP, Pea n Hams advice on wiring this combo should be option #1 (1 Ohm Load) in the link provided to the Rockford Site.
The right wiring means a jump in output power from 510 W to 1560. I really hope that is the little hurdle you face.

Good luck mate.
BTW, once you run that amp at 1500w, make sure the power and earth cables are up to the job!
The old set would have done alright at 500w wired in a 4 Ohm Load, Ported they probably would have made a lot of noise, But If you had them wired at a 1 or 2 Ohm load (1000 or 1500 watts) , those two 300Watt 15" inch subs would have nearly thrown you out of the car lol. Hopefully you'll have a quality increase instead.


But, dont worry, that box will be good.
As for the box being prefab, yes it is, but it looks like a bit love has gone in the design, dual Slot Ports, Drool! Its above the standard of a generic, lets slap the woofer in any box design.
Some of the manufacturers custom boxes really kick some butt, These guys in previous models, Fusion had some winners too, I'd bet the slot ports are correctly tuned and the volume is dead on.
Get that wiring sorted and you'll be surprised what a slot port could do! While the sheer amount of air being moved might not match the 2 x 15"s, hopefully the quality will increase, I'm sure it will. I'd be tuning for that.


Oggy.
I had 380watts to my 600w sub in my old HUGE slot ported Box and its louder than the the 1200w to the same sub in a smaller sealed box I have now, but the sealed is better balanced, even and Tighter.
I reckon it sounds better, blends better, just lucky I can throw twice the power at it now. My warranty stopped at 600 watts.
Mind you, a band pass box can be an awesome thing.
And, yes, there is no replacement for Displacement, Bigger cone area moves more air, more easily with ports (within the tuned box specs)

JL Audio state that 1 x 13.5" W3 woofer move about 60% more air than the 12" W3. And the OP went from 2 x 15's to a 12.
In car audio, you only go smaller when there is a definate quality increase, or you retire.:eeek:
:io:

Designer Audio that is all.

ok guys so wired it to 1ohm load following the wiring diagram on the Rockford Fosgate site but now it seems to be burning voice coils??????? What could be the problem now??????? Im thinking about just flicking both this crap off and getting a better system for SPL?

With all due respect mate, the problem is not with the audio gear its with the installer. Yourself, you have nowhere near enough knowledge to install it properly by the sounds of it so pay a pro and get it done right. Then enjoy the results

Do you know what SPL even is? Or what the tuning of your current setup is and what it should be? Most people by a hektik system and expect it to break windows. Put some work and research in, or pay with cash to a pro. You can go and buy a bigger better system but won't sound flash with you or your mates installing it

Trust me i know

Also get rid of the DNA amp, absolute rubbish and i'd say doing more harm then good to that sub

How do you know the coils are burning?

Whereabouts are you..?

SuFz :ninja:

Chill out a little man just want a bit of advice but the critism is good haha also you dont learn when someone else does it for you, with the setup. I was talking to a few people who have had the same sub and good comments were being said. A little over exaggerated i think though. Everything is wired correctly (got a installer from a shop to check it out) but he said the same about DNA Amp !!! So getting rid of it and keeping the sub. With wattage to do with a new amp? If i get one with sayy???? 1000RMS would this be reasonable compared to say 1500rms?

sunshine coast if that helps ahah

Sorry man i answer the same questions everyday and not just on this forum. People just need to do a little research themselves and most of the time will find what they are after. But yeah like i said there is alot more that goes into it other then turning the amp on lol

nah all good bro. your a good asset to the club haha :) but yeah with my other question. To get an AMP with say 1000RMS or say 1500RMS . I know not to have the gain cranked up if it was the 1000rms but im abit hezzy with the 1500rms cooking the sub?

cheers for the help BTW everyone

Most of the time you won't tell the difference with 500RMS. And sometimes you do. However its always good to go a bit higher with power then have the gains lower. Gives you a bit to play with

No worries. And with the burning smell? First it just smelt like a brand new sub but then WOAH smelt like nuclear electronic shit was hectik. Had a look at the amp....nope was still pretty cold.....stuck my nose in the port slot on the box BAM! ****ing headrush haha

Yeah way to much gain, but more then likely being a DNA amp its putting out a clipped signal. Meaning it is being pushed WAY beyond its limits and the clipped signal is doing serious damage to the sub

Shit thought so. Do you reckon it will still hold out or take my warranty in for a new one haha

Depends on how much damage you have done, and how long it has been smelling like burnt coils?

See how it goes with a new amp and if the smell comes back ill just swap it in. Thanx heaps man

Ok so getting rid of the piece of crap DNA amp and found a Kicker 750.1 that im pretty keen on. Guy wants $350 for it. As you know my sub has DVC 2OHM Impedance but i was wondering how i could wire my sub to work as the the amp is only 2ohm stable? Pros n Cons ?

Dont worry bout did some research on it :)

As you know my sub has DVC 2OHM Impedance but i was wondering how i could wire my sub to work as the the amp is only 2ohm stable?

http://www.the12volt.com/caraudio/woofer_configurations.asp?Q=1&I=22

EDIT: Scratch that, Didn't see your previous post.

was wondering if you guys ever heard of this brand...............its the 1000 amp................ link: http://www.tenvox.com.au/cutting_edge.htm

was wondering if you guys ever heard of this brand...............its the 1000 amp................ link: http://www.tenvox.com.au/cutting_edge.htm

Nope.

i wont get it then haha cheers

we were running one of those subs off two 1500watt amps strapped, after impedance rise the sub was getting about 2000watts of clean power.

never got hot, never smelt like it was burning, and did 145dB in a falcon wagon.

owner of the sub ended up killing it with about 4inches of peak to peak cone excursion resulting in a very bent voice coil xD

burning your voice coil from badly clipping is not, and will never be covered by warranty.

MR SPL, I think I have read earlier that you work at Jaycar, so I ask, what are those response amps like? they seem pretty solid and the price is good. (I thought I would interrupt here because some of your knowledge on amps could help this dude by the looks of it)

more help the better i learn :D

we were running one of those subs off two 1500watt amps strapped, after impedance rise the sub was getting about 2000watts of clean power.

never got hot, never smelt like it was burning, and did 145dB in a falcon wagon.

owner of the sub ended up killing it with about 4inches of peak to peak cone excursion resulting in a very bent voice coil xD

burning your voice coil from badly clipping is not, and will never be covered by warranty.

thats nuts dude wouldnt mind that setup haha ............. also my sub died. voice coil detatched from spider :S so i went to WOW .......... with a bit of sweet talking i got a brand new one that day haha.... so doing everything right this time already got rid of the dogdey DNA amp..........running my mates kicker 750.1 atm while i find a new one..

also with running in / breaking in. whats the go with this??? how do you do it???

MR SPL, I think I have read earlier that you work at Jaycar, so I ask, what are those response amps like? they seem pretty solid and the price is good. (I thought I would interrupt here because some of your knowledge on amps could help this dude by the looks of it)

Yeah im management at jaycar. Have tried all the amps and i have to say have had some pretty good results with the mono blocks. For the price they are great budget amps and i have one yet to fail on me! My team mate took out novice sedan with his mono block and a mate of mine uses a response 1500 hokked up to 4 15"s in a van and does some serious numbers. So yeah budget wise worth looking into

also with running in / breaking in. whats the go with this??? how do you do it???

Keep the volume lower then normal for the first 25 - 50 hours of use. Alot of people find it hard to do but can be worth it in the long run. No more the 3/4 way volume should be fine

Thanks :) jaycar is like a candy store for me haha. I am a little envious of your position there :) a response amp is most likely going to become part of my system when I upgrade.

cool cool cheer MR SPL. havent turned the new one up yet so will run it in. and a jaycar amp is on the list :D