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Old 07-09-2006, 03:07 AM   #1
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Default 2 ohm vs 4 ohm

boston accoustic spg 5552 vs spg 5554

http://www.crutchfield.com/*-4BOUko3...ston+Acoustics

bottom 2 at the bottom of the page

everything looks the same, whats going to be the main difference
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Old 07-09-2006, 03:23 AM   #2
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from crutchfield:
Quote:
Impedance
The resistance offered by an electric circuit to the flow of alternating current measured in ohms. A subwoofer rated at 2-ohm impedance will produce more output than a 4-ohm subwoofer, given similar input wattage, because the resistance is lower.
Looks like you want the 2-ohm as long as your amp can handle it.
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Old 07-09-2006, 10:11 AM   #3
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Ohm ratings on subs give the user a combination of ways to wire your system. The main part depends on what your amp can handle.

If you wanted to run 4 subs, the Ohm configuration will allow you to wire them up so that your amp sees the lowest resistance and will make your amp push a 2 ohm load or even sometimes a 1 ohm load like some amp models can handle.

Below is a Dual 2 Ohm sub using different wiring configurations and multiple subs.

In the last configuration, the 4 subs are wired in series. If you wanted to run 8 subs, you would run two sets of subs in series, then wire the series into parallel to get a 2 ohm load with 8 subs, but your amp at this point must produce at least the RMS power to each sub in the setup as not to underpower them. so in that set up, if each sub handled 250 watts RMS you would need to run a 2,000 - 2500watt amp.

I think you get the idea.







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Old 07-09-2006, 10:15 AM   #4
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This post shows the 4 ohm sub configuration and how they are wired and what Ohm load an amp will see.






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