ohm question?

[smanrocks 10+ year member]

how does it work 1 ohm is better than 4 ohm right? and difference between capable and stable and all that? confused

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[Immacomputer 10+ year member]

Neither is better. I have a dual 2 ohm sub but I run it at 4 ohms because that's where my amp puts out its most power. It's all about meeting the needs of the amp and for the sub.

 

[whitemdx 10+ year member]

resistance (ohm) measure the degree is which an object (speakers, woofers, wires, etc) opposes current flow. So depending upon application, you may want lower or higher resistance.

For speaker or sub purposes, you want to match the resistance with the driven amplifier to obtain the power you want. Power = Voltage^2/Resistance. Given the same voltage, lower resistance = more power. Just make sure your amp is rated (stable) for that resistance.

Now amp MFR rated their amp at certain resistance, in a sense stable. The amp MIGHT be CAPABLE of running below the rated resistance, but you are voiding warranty by doing so.

 

[connersdad19 10+ year member]

it gives more wiring options.

 

[thch 10+ year member]

how does it work 1 ohm is better than 4 ohm right? and difference between capable and stable and all that? confused

in car audio, it makes sense to go low in the stock setting -- you've got 12V, and power increases as impedance drops, so lower = more power. once you get into extrenal amplifiers though...

in the end, it takes energy to move the cone from point A to point B, and power do do it quickly. this is a mechanical law. so whatever you have to do electrically, it will come down to power. 1kW moves 500g of cone the same if it comes from 1V*1000A (0.001ohm) or 1000V*1A (1000ohm). it makes sense to find some transistors that give you something useful (power output at 1ohm or 4ohm, as you can find speakers that can be wired that way!)

best to look at the wiring options, and choose an amplifier accodingly.

 

[Skip01 5,000+ posts]

7 is better....thats all u have to remember in car audio...............7

 

[smanrocks 10+ year member]

thanks