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03-09-2006, 08:58 PM | #1 | |
AF Regular
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Subwoofer: 2 ohm or 4 ohm
what is the difference between 4 and 2 ohm subwoofer, and which one is better
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03-09-2006, 10:57 PM | #2 | |
Audio Guy
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Re: Subwoofer: 2 ohm or 4 ohm
a 2 ohm speaker is 1/2 the load on an amp that a 4 ohm speaker. The real usefulness is picking speaker(s) that load the amp down as much as possible, to increase the amps output power.
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03-09-2006, 11:09 PM | #3 | |
AF Regular
Thread starter
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Re: Subwoofer: 2 ohm or 4 ohm
alright, thanks
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03-10-2006, 09:15 AM | #4 | ||
Banned
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Re: Subwoofer: 2 ohm or 4 ohm
Quote:
If an amp is 2ohm stable, and it pushes 500wrms @ 2ohms, it gives ~250wrms at 4ohms, correct? How would loading the amp with more resistance get more power from it when 1/2 the resistance pulls twice as much power? |
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03-10-2006, 11:27 AM | #5 | ||
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Re: Subwoofer: 2 ohm or 4 ohm
Quote:
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03-10-2006, 11:35 AM | #6 | |
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Re: Subwoofer: 2 ohm or 4 ohm
Less resistance yields more power. Example: a 4 ohm DVC sub can be wired to 2 ohms. A 2 ohm DVC sub can be wired to 1 ohm, wich will receive more power assuming the amp is 1 ohm stable.
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03-10-2006, 11:40 AM | #7 | ||
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Re: Subwoofer: 2 ohm or 4 ohm
Quote:
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03-10-2006, 11:41 AM | #8 | |
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Re: Subwoofer: 2 ohm or 4 ohm
302exploder, these wiring diagrams might be helpful:
http://www.crutchfieldadvisor.com/IS...rs_wiring.html |
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03-11-2006, 11:24 AM | #9 | |
AF Regular
Thread starter
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Re: Subwoofer: 2 ohm or 4 ohm
so let me see if i got this right: the impedence of the sub doesn't have to match the impedence of the amp. so i can have a dual 4 ohm voice coil sub and run it off an amp at 2 ohms? and a sub with higher impedence will pull more power from an amp?
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03-11-2006, 12:30 PM | #10 | ||
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Re: Subwoofer: 2 ohm or 4 ohm
Quote:
Take a look at the power ratings on this amp: http://www.drdetailshop.com/d1100d.htm It does 425 x 1 @ 4 ohms, 800 x 1 @ 2 ohms, and 1100 x 1 @ 1 ohm. |
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03-12-2006, 02:18 AM | #11 | |
AF Enthusiast
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Re: Subwoofer: 2 ohm or 4 ohm
Higher impedance doesnt pull power from the amp. It puts more resistance one the amp causing the amp to push less power to the speaker. Lower impedance (resistance), the more power the amp can produce. Pretty simple.
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Cant remember who posted it but if you see it give yourself credit Don't ever look at cars as just imports or domestics. Just because a car is made in a certain country doesn't mean that it is anything like another car from that country. An example of this is Mitsubishi reliability, just because they are Japanese doesn't mean that they are as reliable as a Honda or Toyota. Cardomain |
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03-12-2006, 08:38 AM | #12 | |
Audio Guy
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Re: Subwoofer: 2 ohm or 4 ohm
after looking at my original post ..... I meant to say that a 2 ohm speaker is twice the load, not 1/2. Thanx for catching it.
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03-12-2006, 10:10 AM | #13 | |
Banned
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Re: Subwoofer: 2 ohm or 4 ohm
takes twice to force to reach equal power output in 4ohm than 2ohm.
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03-12-2006, 11:30 AM | #14 | |
AF Enthusiast
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Re: Subwoofer: 2 ohm or 4 ohm
I was just trying to state that the sub doesnt pull power from the amp The amp puts out power relative to the impandance conected to the amp.
__________________
Cant remember who posted it but if you see it give yourself credit Don't ever look at cars as just imports or domestics. Just because a car is made in a certain country doesn't mean that it is anything like another car from that country. An example of this is Mitsubishi reliability, just because they are Japanese doesn't mean that they are as reliable as a Honda or Toyota. Cardomain |
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03-12-2006, 12:20 PM | #15 | ||
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Re: Subwoofer: 2 ohm or 4 ohm
Quote:
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