Hey all, I have an option Audio Pro Series Sub (800w RMS) (Specs Here http://www.optionaudio.com/specs/12PRO11.pdf)
And i have a kicker ZX350.4 amp (Plan to replace it with a decent monoblock eventually)
Noteworthy Specs 175 x2 @4Ω
I opened the sub box up yesterday and noticed that the 2 voice coild were running in series (see pic below) so they are running at 8Ω the whole time i've had the sub i thought the coils where in parallel @ 2Ω.
So my proposed plan is below and im just asking for thoughts if this would be the best thing to do for the time being, until i get a decent monoblock, and would i get a noticeable performance increase.
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Running at a lower ohm will increase the output at the amp, which will make the sub louder. Well that's my understanding of it anyway
I half knew that lower ohms = more power basically (ohms law). so would i be better off running one coil per 175w channel on the amp @4 ohms (pic above) or would i be better off chucking the 2 coils in parallel making them 2 ohms and running them off just off one 175w channel?
Hmm Im not quite sure and don't want to give you the wrong info.
But I'd go with the second picture![]()
Do not ever wire the coils to seperate channels either. A sub is one, (mono) so you can only ever connect it to one channel. No matter what configuration you wire your voice coils in, it's still the one driver, both coils will move at the same time.
ahh, ok cheers for that, i wasn't sure about how to wire coils. they are definitely staying as is though, until i get a better amp.
The 175 x 2 rating when bridged is at 4 ohm.
Your sub can either be wired for 8 ohm or 2 ohm, so neither load is suitable, or safe, to be presented to your amp. Amps will run at both higher or lower impedance levels for some amount of time, how long depends on the type of amp, quality, and it's intended application.
My advice is if you want to hang on to either your sub, or your amp, is that you disconnect both of them immedaitely and don't use either until they are paired correctly.
stupid advice.
leave it as is with the coils in series, and the channels bridged.
it gives the sub the same power as if you wired 1 coil per channel, and means each channel is running at 4 ohm, which is perfectly fine, and well within the amps limits, meaning it should never overheat.
sounds good, once you get the monoblock you can wire it in parallel.
All then care to explain how you would wire a DVC 4 ohm to a 4 ch amp rather than just saying yes it's ok...
175W into each coil as in your second diagram.
Being separate channels means shit with the same signal (pretty much all subbass is the same on left & right channels). The magnetic force caused be the electrical signal just adds together anyway. If you want to be pedantic, you can join your left and right RCA so the signal becomes mono and then re-split it back to 2 channels to plug into your amp, but I wouldn't even bother.
Low fq's are not the same on left and right channels, music is not recorded this way. Each coil will be not sent the exact same signal.
You guys dont need to argue :P I'm probably going to get this sometime this week maybe (option audio street 600WRMS- $249) https://shop.1wow.com.au/productcart...R-24p16510.htm
Does anyone have any thought or suggestions of anything else around this price, heard a worker at straithfield say today OP amps were crap and they dont stock them anymore, because they were very unreliably and OP have terrible after sales support?
Also a bit worried about how small it is for a 600w mono block.
im not into option audio and i wouldnt rely on it unless i had to :P, i guess there will be a variety of opinions, if it is something you want then go for it![]()
I'm a fan of OA, and i chose an OA amp to run my Boston SPZ's for 6 months and i never had any issues.
Most stores will tell you any crap about products they don't stock.
It will be once you make it mono... Might as well make it mono at RCA level rather than letting the amp mix the channels together like in a normal set up. Then there is no reason you can't do it, not that the minor audio difference from left to right would have hurt anything anyway.
Don't want other people who read this to have the wrong information.
They tell you it's shit so you buy what hey have in stock man. I have option audio powering my l7's
I most likely will get the OP amp to match my sub :P i was just checking what people thought first and it seems all good, if i ever have a problem, it does have warranty so all will be good.
If you sum the left and right signals together then yes, but if you wire each voice coil to a seperate channel (which is what he has been instructed to do above) then no. Your are effectively sending a stereo signal to to the voice coils of the one driver, and this does not work.
It's not the wrong advice, and people can chose to take it either way they want.
Last edited by HCVP; 29-08-2011 at 07:29 PM.