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15 inch sub question

This is a discussion on 15 inch sub question within the Stereo and Electronics forums, part of the General Help category; So i got my friend a sweet hook up on some 15 inch L5 solobaric subwoofers. They are 2 ohm ...

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    Member whiteLS1TA's Avatar
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    15 inch sub question

    So i got my friend a sweet hook up on some 15 inch L5 solobaric subwoofers. They are 2 ohm dual voice coil, for 200 bucks in the box. So now my question is can his 2 channel 1200 watt amp power both those subs?

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    Member Mike's TA's Avatar
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    Got this from another site.

    """here are the specs for those subs= 2ohms
    Frequency Response: 18-100k
    Impedance: 2 Ohm DVC
    RMS Power Handling: 750
    Peak Power Handling: 1500
    Mounting Depth: 8 1/2 Inch
    Size : 15 Inch

    so you need about 1500 watts RMS at the correct ohm load"""

    The amp may be rated at 1200 watts, but that is peak rms. It will not be pushing that at all times. MAYBE around 800 watts constant.

    If you're running one sub, the 1200 watt amp will work. If you do two they will not hit as hard as you will only be running approximately 400 watt's per sub.

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    Member chuck4345's Avatar
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    i have used many l5 and l7 subs they crave power i used run 2000 watts per sub off true power never had a problem but those sub will blow if you under power and play them hard or use dirty power what kind of amp is it?

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    I would love to know what kinda of god blessed subs are running at 2000 contentious and not blowing? I have a new L7 15 and i cant turn my 1200 Watt amp up more then 3/4 up or the speaker had trouble handleing the power. What kinda amp are you using that your getting 2000 "true power" Is that true peak power? I know it cant be contentious power. It depends on who makes the amp because a lot of people OVER rate their power to sell more amps.

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    i have a solo x which has a 2500 W RMS and two audiobahn immortals which are rated at 2000W RMS each???

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    My FI BLs handle 2000rms just fine. Fi BTLs will laugh at 2000rms, AudioQue HDC3s will take 2kw all day long, so will a Sundown Nightshade, and a Incriminator Audio Death Penalty, and a DD9500 series, or 9900 series will slap you if you only give it 2kw, RE XXX, RE MTs, I can keep going but I think my point is made lol. Those Audiobahns will not take 2kw lol. The L7 will stress at over 1200-1300 usually. As for amps doing 2000rms.. Sundown 1500 @ .5, Sundown 3000, IA 20.1 @ .5, IA 40.1, US Amps MD2, MD3, DDZ1, pretty much any Stetsom amp, theyre top one does 7kw, Kicker 2500.1, once again I can keep going lol.

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    Detailing + Design third_shift|studios's Avatar
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    geeez guys! thats some serrious pounding

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    Yeah i know there plenty of other subs that can take 2K + watts but not the L7 and defiantly not the L5.

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    Quote Originally Posted by whiteLS1TA View Post
    So i got my friend a sweet hook up on some 15 inch L5 solobaric subwoofers. They are 2 ohm dual voice coil, for 200 bucks in the box. So now my question is can his 2 channel 1200 watt amp power both those subs?
    Need more info on the amp.

    You can make them hit with alot less power than that though.
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

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    Member chuck4345's Avatar
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    i was running 2 soundstream xxx on 4 solobaric l7 12s soundstream claims 10k watts at one ohm we ran them at 1 ohm got 4200 contious power that 2100 per sub never had a problem posted numbers of 150.2 db at spring break nationals 07 the only problems i had was an amp clipping problemfrom lack of battery but when not competeing pounded on the daily

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    Member chuck4345's Avatar
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    oh and i hear all this about power making it pound power is good for spl only,for just loud bass all you need is a good box design remember a sub has to load of a stationary object(like the trunk, decklid etc)

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    im trying to get a kicker 2500.1 for my solo x. should be perfect amp sub package?? what yal think??

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    Quote Originally Posted by chuck4345 View Post
    never had a problem but those sub will blow if you under power and play them hard
    not true at all....impossible

    Quote Originally Posted by FFRob2001 View Post
    I would love to know what kinda of god blessed subs are running at 2000 contentious and not blowing?
    many... 3k, 4k....5,000 Watts RMS -- it's out there

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    Member chuck4345's Avatar
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    absolutly true but that being said most of the time its dirty power coming out of amps that are pos say 1200 watts real power 250 ive seen it a million time most people dont know the first thing about there equipment they just go on what they have heard or seen ive been installing and competeing for years i used all types equipment and know what im talking about

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    Quote Originally Posted by chuck4345 View Post
    absolutly true but that being said most of the time its dirty power coming out of amps that are pos say 1200 watts real power 250 ive seen it a million time most people dont know the first thing about there equipment they just go on what they have heard or seen ive been installing and competeing for years i used all types equipment and know what im talking about
    Sorry - it's just simply false information.

    Underpowering a sub WILL and can NEVER damage it. Period.

    Dirty power can, yes.

    The reason you think that underpowering a sub can damage it is because of the following:

    People use amps sized too small for the sub. they aren't happy with the results, and bring the gains up too high (past rated). Past rated, the signal will distort more. Sub blows, person blames the amp because when they buy a larger amp and use the power band within that amps range and the sub doesn't blow, some people decided the lower powers before killed it. Not true...what killed it was the fact that they pushed the amp beyond it's limits, thus clipping the signal.

    I don't even know what you are saying with seeing people using "1200 watts real power 250" -- if someone is trying to get 1200 watts out of an amp that only puts out 250 RMS, that doesn't mean the amp is a POS.... it means the user doesn't know what he is doing. It also doesn't mean that the sub is "underpowered" ....it means the user should have been using less power to begin with, but instead either tried pushing the amp past it's limits, or ignorantly set the gain improperly.

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    Member chuck4345's Avatar
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    i do agree with what your saying but when i said 1200 really doing 250 is and amp lets just take for instance a 1200 watt jenson amp real power if power tested is 250rms as a kicker 1200.1 is not 1200 but usually 1400rms or so if power tested now put those amps on a L7 and the kicker amp will run it fine if you beat on it and the jenson will blow it ive seen hell ive done it when testing new amps that were demos and i know how to gain match an amp not trying to argue just hope you see where i coming from if i wasnt clear earlier

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    Quote Originally Posted by chuck4345 View Post
    i do agree with what your saying but when i said 1200 really doing 250 is and amp lets just take for instance a 1200 watt jenson amp real power if power tested is 250rms as a kicker 1200.1 is not 1200 but usually 1400rms or so if power tested now put those amps on a L7 and the kicker amp will run it fine if you beat on it and the jenson will blow it ive seen hell ive done it when testing new amps that were demos and i know how to gain match an amp not trying to argue just hope you see where i coming from if i wasnt clear earlier
    Yea it was very unclear before.

    You made it sound as if underpowering a sub can damage them...when what damages them is pushing an underpowered amp past rated power.

    Going with our hypothetical situation: A 1200 watt jenson should never be pushed that hard, assuming it makes 250 RMS. Thats consumer ignorance, for thinking peak power ratings (prob even high for peak) are ok to operate at. The Jenson will not do any harm if kept within it's ratings....its the buyers fault for thinking 1200 is RMS, and not peak.

    Anyways, the way it was worded, it seemed like you were directly associating blown subs with them not receiving enough power. (for example: a 1 kWrms sub will blow if given only 250 Wrms), when what you really meant was that someone who pushes the 250W amp past rated, will introduce distortion and clipping to the system, thus likely damaging the sub.
    Last edited by fredmr85; 04-07-2008 at 05:09 PM.

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    Member chuck4345's Avatar
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    thats what i meant wow you word things good

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