db specs?

Nick14874
Nick14874 Posts: 18
edited March 2008 in Car Audio & Electronics
I just purchased my second set of db 12"s from circuitcity... Now on the website it says
RMS power handling (watts): 720

Frequency response (kHz): 27Hz - 200Hz

Peak power handling (watts): 1500


But on the box it says:

RMS power handling (watts): 500

Peak power handling (watts): 720

But it doesnt make since to me because neither of the numbers add up besides if the website was correct but I dont know where they got those numbers when the box says something totally different and even if they were doing all combined why would the box say something totally different? Im lost....?
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2008
    If you're talking about the 2-12" DB Box, then its 720w RMS. If you're talking about a single DB sub, its 360w RMS.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    Ya, im talking about the db vented box with 2 subs in it now on the site it says 720 rms and 1500 watts peak but on the box it says 500rms and 720 watts and even if on the box they are talking about per sub it still doesnt add up I also beleive its 720rms cominded but im trying to figure out why the box says this and which one is accurate because i would think the box would have the true specs but how can 500rms be equal to 720 peak none of it makes since I hope someone can enlighten men...
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2008
    720 RMS is the correct power handling of the DB212-2 box. A single DB 12 handles 360 RMS.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
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    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    Ok so i guess i just dont understand why the box says 500rms and 720 peak? Any clue? Also i just got a super d mono hifonics 900rms x1 how do you think that will handle all 4 dbs? there set up one behind the other both pointing at the trunk in my explorer. Im going from a bazooka mono going to one that has 200rms and a kicker going to the other that has 420 rms... Dont laugh I know they both suck but in comparison how is the hifonics going to handle those 4 a lot better? Or is it going to be to much or what?
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2008
    Probably just a misprint on the box. Its happened before with a sub. Cant remember which or what it was tho.

    900x1 at 2 ohms? If youre running 2 DB212-2 boxes, and you want to run them all off 1 amp, youll need one stable down to 1 ohm.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    Yes its 900rms @ 2 ohms and I have 2 boxes with 2 dbs in them... I am a bit of a newbie to all of the complicated stuff to do with subwoofers so im not aware how i would do one down to 1 ohm and why do i need to wire one down to 1? Running both boxes at 2 ohms off this one amp wont work good? And is 900rms x1 @ 2 ohms going to be a lot better on my setup compared to my mono now withh 200rms and a kicker with 420 each going to a pair?
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  • ShinAce
    ShinAce Posts: 1,194
    edited March 2008
    You have 2 sub boxes to wire to one amp. Each box is 2 ohms. If you run both of them to a bridged amp, you have to choose 4 ohm(series wiring) or 1 ohm(parallel wiring). Your amp will blow if it sees 1 ohm all day long. Running it at 4 ohms will not get the full power out of it.

    You can run a single pair of subs to the amp you have now and get a second amp, or get a new amp that is stable at 1 ohm bridged to run all 4 subs.

    That's the long version of what he just said.
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    Hmmmm here is the amp i just bought http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=16367 thats the 900rms one its not in yet... So i guess all 4 can not run at 2 ohms? Say i just have both wires twist them together and put them in the amp whats that giving me? And if i am running it at 4 ohms is that still not a lot better then running a 5 channel with 420 rms and a mono with 200 rms to it? This is just a lot to someone who knows nothing about this im a little lost? Just tell me whats going to be best and stuff I was told by a friend who has worked at a subwoofer shop for a long time that i should get that amp and run both boxes to it and it will pound 900rms and it will be insane... Guess he was wrong
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2008
    Your best bet is to find an amplifier that does 1500x1 @1 ohm. Theres quite a number of amps out there capable of that.

    Sell your current amp to offset the costs of the new one.

    Option 2: you could buy another amp identical to the one you have, and put one on each box. But you will need to know how to gain match to do this correctly. Gain matching involves a multimeter capable of AC voltage and a CD with test tones. If you dont have access to those, I'd suggest option 1.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    Ok well the amp i just ordered has 1200rms @1 ohm... Im sorry I am new to this so i am so lost. I just dont understand what the need is for 1500@ 1 ohm when both pairs of subs are 2 ohms also I dont understand why this super d mono will not power all 4 right... My friend who has been working and installing systems for a long while informed me that this amp would power all 4 great and it would be 3 times as loud going from a mono with 200rms and a 5 channel with 420 rms too 900rms x1 at 2ohms. I really do not want to spend any more money but I want to slam all 4 i had 2 polks and 2 sonys on the same amps and it hit way harder than i am now with 4 polks on the same amps none of it make since to me and i keep spending more and the results do not get better... Basically i need to know is there no way i can hook all 4 up to this hifonics super d mono and pound a lot harder than with what i got it on now or should i put one pair on the hifonics then run the other pair to the kicker?
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  • eloplayspolo
    eloplayspolo Posts: 1,117
    edited March 2008
    ur friend is wrong. but u will want at least 600 watts going into each....
    2013 Toyota Prius
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    So what should I do return the amp? Or what I was under the impression that this amp would power all 4 subs and would give them 900rms each so i was told... Now my question is what happens when I take both the boxes wires twist them together and put them into the hifonics amp? Whats it going to do? Is my best bet to return the amp or should I keep it and put one pair of polks on it doing 900rms a sub and then the other pair do to my 5 channel kicker that does 420 rms or what? Im new to all this stuff so I have no clue where to go from here
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2008
    Each sub in that box is 4 ohms. You have two subs. So the box as a whole is 2 ohm.

    So now, you have two, 2 ohm boxes. When you wire those together, youre going to get a final 1 ohm load at your amp.

    The amp you have says it'll due 1200x1@1 ohm. That means, each box will get 600 watts each, each sub will get 300 watts each.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    So what do you suggest that i do then? Run the kicker which is 420 rms to one pair then the other pair run to the hifonics or should i return the hifonics and get one with 2000rms @1 ohm for 100$ more...
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2008
    If it were me, I'd see about getting the 2000rms @ 1 ohm. Itll be closer to the RMS of your speakers and youll get more out of them. You will also be able to turn the gain down a little which will help the longevity of your amp as well.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • Nick14874
    Nick14874 Posts: 18
    edited March 2008
    I just started a new thread because this got way off topic explaining my whole problem and everything but thanks to everyone who has helped me so far...
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  • ShinAce
    ShinAce Posts: 1,194
    edited March 2008
    exalted512 wrote: »
    The amp you have says it'll due 1200x1@1 ohm. That means, each box will get 600 watts each, each sub will get 300 watts each.
    -Cody

    Stick with that bro.
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