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<blockquote data-quote="audioholic" data-source="post: 373188" data-attributes="member: 549629">Ptown did a good job explaining, let me try a slightly different way. Ohms is a measure of resistance on current (flow of electrons). The higher the ohms (4ohm vs 2ohm for example), the more resistance on the current. Therefore, say your amplifier is pushing X amount of pressure down the speaker wires. If you double your resistance on the circuit by going from 2ohm to 4ohm, the amp is pushing with the exact same force, but it is being resisted with twice the force, so its overall output is halved. Make sense?Now about dvc&#039;s. Simply speaking, dvc&#039;s exist to give flexibility in wiring options. The more voice coils you have in your circuit, the more options you have as to wiring combinations for a final impedance. DVC&#039;s also are made to allow you to get ultra low impedances out of a small number of subs. This has become popular today with the low impedance, high current amps on the market today.If your amps is stable to 4ohm bridged max, I recommend getting 4ohm dvc&#039;s, or 8ohm svc&#039;s. 2ohm svc&#039;s would also work, but those aren&#039;t too prevalent.edit:&quot;That&#039;s why 1 ohm and .5ohm loads are dangerous to some amps with unregulated power supplies - cause the amp will just keep pushing harder until it overheats.&quot;Running a lower impedance than your amp is rated for is dangerous to it, be it with a regulated power supply or not. And, being a regulated power supply is no guarantee the amp will run those low impedances.</blockquote>

[QUOTE="audioholic, post: 373188, member: 549629"] Ptown did a good job explaining, let me try a slightly different way. Ohms is a measure of resistance on current (flow of electrons). The higher the ohms (4ohm vs 2ohm for example), the more resistance on the current. Therefore, say your amplifier is pushing X amount of pressure down the speaker wires. If you double your resistance on the circuit by going from 2ohm to 4ohm, the amp is pushing with the exact same force, but it is being resisted with twice the force, so its overall output is halved. Make sense? Now about dvc's. Simply speaking, dvc's exist to give flexibility in wiring options. The more voice coils you have in your circuit, the more options you have as to wiring combinations for a final impedance. DVC's also are made to allow you to get ultra low impedances out of a small number of subs. This has become popular today with the low impedance, high current amps on the market today. If your amps is stable to 4ohm bridged max, I recommend getting 4ohm dvc's, or 8ohm svc's. 2ohm svc's would also work, but those aren't too prevalent. edit: "That's why 1 ohm and .5ohm loads are dangerous to some amps with unregulated power supplies - cause the amp will just keep pushing harder until it overheats." Running a lower impedance than your amp is rated for is dangerous to it, be it with a regulated power supply or not. And, being a regulated power supply is no guarantee the amp will run those low impedances. [/QUOTE]

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