5000 watt subs

i have 2 12s thats 5000 watts peak combined and 2500 watts continous, a 20 farad cap, and 0 gauge wiring... im lookin to purchase a 5000 watt amp and the power ratings are i think missing some info about the rms watts.. i plan to wire the subs down to one ohm.. and the amp info says 5000 watts peak power at one ohm and 2250 watts rms at 4ohms and it has nothin else so is the rms at 4ohms the most contious power its gonna put out no matter what load it has on it.. and if it is like that would my subs would be ok bein pushed to 5000 watts peak

EXACTLY what subs have you got and EXACTLY what amplifier are you considering? You don't get an amp with RMS power that matches the peak power rating of your woofers. You are just asking for trouble.

https://cgi./PAIR-BOSS-AUDIO-NX12D-12-5000W-Car-Power-2-Subwoofers-/230489080029?pt=Car_Subwoofers_Enclosures&hash=item35aa3840dd     ...... these are the subs i have

https://cgi./NEW-Boss-OL5KD-Mono-5000-Watt-Car-Amplifier-Amp-Class-D-/230560856018?pt=Car_Amplifiers&hash=item35ae7f77d2     this is the amp im lookin at

They should be called 24" 5000W. They are 1250W RMS each. (4 Ohm dual coil)

As too the amp - I love this sort of crap.
Most sites and the owners manual says
MAX Power Output @ 1 Ohm: 5000 Watt x 1-Channel
MAX Power Output @ 2 Ohm: 3500 Watt x 1-Channel
RMS Power @ 4 Ohm: 2250 Watt x 1-Channel

I think only one site gets the latter correct, namely:
Max power @ 4-Ohm: 2250w x 1

Dacdes ago I would have assumed RMS to be half-pak, ie 2500W, 1750W & 1125W (at 1, 2, 4 Ohms).

But since it only has 4 x 30A = 1728W input @ 14.4V, I'd assume a maximum of 1250W RMS at 1 Ohm.


They make no suggestion about mounting any stiffening cap close to the amplifiers - even for 2 amps it is shown battery side of the distro block....
Don't tell me Boss sell stiffening caps too?
I hate companies that rip off their customers.

so would this amp be ok for my subs?? even if the amp was turned up all tha way up with a load of 1ohm

an yea they do sell caps... thats who makes the 20 farad cap i have...

Hence my sarcasm....
They sell caps to make money.
They can't get their specs right, nor do they bother even explaining where to place a cap for best effectiveness.

Not that they'd tell you to look elsewhere (like here) for info on how caps are generally either bling else money spinners. In very few situations are they an economical and effective solution.

NEITHER of those products are even CLOSE to honest ratings. Not. Even. Close. They are so highly optimistic, that if you were to look up the word optimistic in the dictionary, that's the picture you'd see following the definition.

But hey... If you think you can build a 5kW sub system for under $400.00, knock yourself out, just don't even begin to think that you have a 5kW subwoofer system. You won't. If you get a real-world 1.5kW, I'd be amazed.

Now... Those woofers look to be made specifically for that amplifier. Their definitely inflated "power ratings" appear to be right in line with the guaranteed exaggerated "power output" capability of the amplifier. Go for it.

One last thing... Read the forum rules, and most specifically, the one telling you that eBay links will not work. Should've done that before you signed up, right?

What annoys me is the "[b/]RMS Power @ 4 Ohm: 2250 Watt x 1-Channel" even when its 4x30A = 120A fuses means max (say) 14.4x132=1900W INPUT, but nominally say 120x.8x13.8V = 1325W.

How do either of those equate to >2kW OUTPUT?

Yet the Evolution amp in will this amp work? has exactly the same "RMS" typo for 4Ohms.

RMS is RMS. It cannot be fudged unlike "peak" etc.

Sounds like a "Back to the Future" sequel. How many jig-a-watts is that thing gonna be puttin' out? If it works will ya get me some of them wedge style speakers? I wanna put 'em on my dash to really get them killer highs.

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"That'll get ya 10 in Leavenworth,11 in Twelveworth, or 5 & 10 in Woolworth". Groucho Marx                                                      

It won't have killer highs.
The car needs to be going so fast so the alternator charges. (True! The faster the engine revs, the faster the car - it's on the net. But not for bikes - the world's Fastest Indian was only 4,000RPM - but bikes are smaller so they can use torque instead.)

Anyhow, because it's so fast, the sound slows down hence giving it a bass sound. (Like the Doppler red shift. It should be blue due to shorter wavelengths, but thanks to Tesla's corrupted Einstein Relativity, it still takes longer to reach you, hence a deepening frequency shift.)

Facing the speakers rearwards yields the correct results (a treble aka blue shift that is higher in frequency) but whilst that improves fuel economy & acceleration, it's too quiet for anyone sitting forward.


Hence why people that really know what they are doing use small alternators and bigger batteries - then their speed has no effect on the battery discharge.
[ Which coincidentally is just as well - I have seen too much damage caused when the battery charger's extension lead run out! And longer 4 or 0 Gauge AC rated extension cords cost a fortune! Whilst copper-free Oxygen is ok, it is to difficult to confine to an electricity conducting channel. ]


Hence BTTF's fluxgate capacitor - it converts relativistic (ie, gravitic) flux proportionately to speed to offset the time domain changes. Best of all, being a cap it isn't sensitive to acceleration. (Inductors react to the integral of acceleration, hence their use in jump technology whereas caps are used for spatially-zero time "jumps". FYI - many still use resistors to try to dampen or slow transitions, and despite the "wormholes" you see on Stargate etc (ha ha!), this is yet to be achieved. I still maintain that resistance is futile!)    


But there lies the crutch. People now refer to flux-capacitor. The gating has been dropped. I see this as a another successful shift "away from the truth" to induce failure so that people move back to time honored snake-oil remedies and car amplifier systems.


People still by stiffening caps and amplifiers whose output increases with voltage.
I rest my case!

And hence why you won't get those killer highs.
If anything, any highs will kill you!

i think my head's going to explode.

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Hey Old Spark, how 'bout sending me some of that "killer ganga" you must be smoking! I was kiddin' about the wedge speakers, OK?

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"That'll get ya 10 in Leavenworth,11 in Twelveworth, or 5 & 10 in Woolworth". Groucho Marx                                                      

Careful - last person that accused me of that upset the 160 other hi-tek forummers that were "obviously" less clever than I was. They especially hated the accusation that they were slower than dope smokers. (Which they were - dope smoking colleagues understood the issue and even saw their contradictions - not bad for "losers" compared to hitek EMS hackers...!)


But I was just replying to your "highs" comment... I have seen so much crap in the published specs of boss similar speakers lately that I thought I'd add some of my own - even though there is probably more fact in mine than fiction.
At least I'm not dumb enough to say RMS power = 0.7 x peak power!

But I still want to know what mechanism they use to have SMPS output voltage proportional to input voltage (eg. from 12V to 18V)!


If those outputs induce artificial THC, I apologise for misinterpreting your high.