Jump to content
SAU Community

Recommended Posts

I have 2 x 12" Orion Cobalt DVC (dual Voice Coil) subs, each mounted in sealed 45.95 Litre internal volume boxes.

there set up to run in parallel at 2ohms ( i believe)and was just looking for some advice on what sort of power 2 channel or monoblock amp will power these sufficiently. I only wanted to spend round $500-600 on an amp, but have been told by so called experts that im looking in the $1000 ball park to run the subs adequatly??? and if i buy too small an amp then I'll just keep blowing them??

Powers my forte....not sound unfortunatly....any suggestions would be much appretiated.

the sub specs are:

96db sensitivity

32Hz Fs

200watts (continous thermal power handling)

400watts (peak thermal power handling)

51mm Voil Coil diameter

Link to comment
https://www.sau.com.au/forums/topic/33217-which-amp-for-my-2-12-subs/
Share on other sites

the experts are right, you'd be looking at a pretty damn strong monoblock to run those subbies. if u skimp on the amp, it'll work too hard and die pretty quick. if u cant afford to run the subbies then i suggest u sell one.

something like that mrd-500 would be what ur looking for

r they DVC 4+4 ohms each?

that gives a total impedence of 1ohm if ur using a monoblock.

if thats the case then i'd suggest buying a 2 channel amp thats 2ohm stable on each channel cos u'd get the most power out of it that way, and its cheapest.

u'd want to give it around 250ish rms per channel @ 2ohms, so have a look whats around.

ask fhrx to set u up with a nice 2 chan audison

With power comes control. That is why people always say to get the largest amplifier possible. But you have to look beyond the power figures when buying amplifiers. Make sure you watch the damping factor and THD of many of these so called "hi-power" amplifiers.

I'd recommend the Audison SRx2S. 600 continous into 4 ohm. Retail $599, PM me if you want to know your price. :D

thanks for all the advice guys, much appretiated......I ended up spending a little extra and going for a Soundstream RUB 500-2. All hooked up sounds AWSOME!! might even post some pics of my install later in the week....took me all weekend.

as far as weight is concerned.....are you kidding??? if your concernd about 30-40kg of stereo then I'm guessing you tell all your mates to get out of the car cauz they'll "slow your ride down"...lol....I mean really.....better take out all your seats then....more weight.....no A/C either......more weight......no 18" mags....more weight.....no bodykit.....more weight.....no FMIC....more weight......no bigger turbo.....more weight......no coilover suspension.....more weight.......no car alarm....more weight.....no window tint.....more weight......no roll cage....more weight.....

stereo extra weight....blah

any way cheers all, thanks for the "valid" comments

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • GTSBoy on your suggestion on another thread I had a look at those injectors and ended up getting them because of the quality.  Got the expensive ones.  
    • Hey guys been looking everywhere to try and find the correct gtr hood latch support part number but only found the first half and when I search with that number it sends me to an r34. The first part I found was 62515. If anyone could help me with the rest then I’d really appreciate it. Or if there’s some alternative hood latch support that would work even better cause I can’t find any for sale. (Searched on upgarage, partsouq,buyee,rhdjapan) 
    • If you've only done the upper control arms on the rear, AND you have changed their length (by more than about 1mm) to set the camber you want, then you will definitely need/want to install traction arms also. Adjusting the camber arms on their own WILL introduce bump steer and make the car unpleasant to drive. Most owners have no idea that their car could behave infinitely better than what they put up with. I'm not entirely sure what the Stageas need, but I am thinking that unless you have massive front spring rates and pretty soft rear springs, you have waaaay too much rear bar. Oversteer city, in my estimation. Combined with possible excessive bump steer from maladjusted arms, that could be a recipe for nastiness. ATR43SS2 is not a highflow. It is an outright replacement turbo. It's a little bit bigger than the largest highflow profile that Tao does. Probably a solid 300rwkW turbo where the bigger highflows will be about 30-40rwkW less. Nevertheless, we're only talking about ~300 rwkW, which is well within the abilities of the stock ECu to run with a Nistune on board. I would do so without hesitation - and I will be doing so when I get my finger out and actually get the injectors and AFM installed. But, if you would prefer to drop a whole lot more money on the ECU side, then I suspect you're looking at Haltech. The Haltech fanbois here will all spout on about all the available engine protection you can have, that you can't have with the Nistune option. And they're right. But it doesn't really come for free either. You will spend more money on extra sensors and the like, plus the work to install them. If the engine was built and therefore represented a big investment to protect, then I'd say definitely do it. If you view the current (and forever into the future) shortage of replacement engines as something to prompt similar protection, then also, do it. If you see a destroyed RB25 as an opportunity to put in a Mercedes or other V12 (like I kinda do)... then your perception of the risk/reward might differ. These are good injectors. You can also get a "better" set of the same with more flow matching, for more $$. 1000cc is where you will want to be. You will need an R35 AFM and adapter tube if you want to stay with Nistuned stock ECU. Otherwise, if going Haltech, you can ignore. As for intercooler. Just about anything will do. You're only talking about ~300rwkW. Just put a big core in there. Be aware that return flows do add significant pressure drop and will cost power and will make the turbo work harder to achieve the same goals. If you can manage a proper crossflow, do it. I'm keeping my very good return flow because I'm only expecting to be in the ~250rwkW range, and will live with whatever outcome I get.
    • I have a heap that i have collected if you want some authentic ones still. Pm me if your interested!
×
×
  • Create New...