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<blockquote data-quote="Nelson9937955" data-source="post: 3022394" data-attributes="member: 577018">From Crutchfield...Q: When should I use a mono amplifier instead of a multichannel amplifier?A: Because mono amps tend to be Class D amplifiers, they are a good choice for powering subwoofers — Class D amplifiers have a high power-to-heat ratio and excellent efficiency, which are exactly what you want when dealing with power-hungry low frequency signals.Most mono amplifiers are designed to run at 2 ohms; some are even 1-ohm stable. Multichannel amplifiers, on the other hand, are typically designed to work with a 4-ohm load. This is an important difference when using your amp to power multiple subwoofers, because you won&#039;t be able to bridge your multichannel, 4-ohm stable amp to power multiple subs that present less than a 4-ohm load. Instead, use a mono amplifier to power a 2-ohm load — two 4-ohm subwoofers, or 2, 2-ohm dual voice coil subwoofers, for example. You&#039;ll be able to push your subwoofers with the mono amp&#039;s maximum power, without running at a dangerous impedance.</blockquote>

[QUOTE="Nelson9937955, post: 3022394, member: 577018"] [B]From Crutchfield...[/B] [B]Q:[/B] When should I use a mono amplifier instead of a multichannel amplifier? [B]A: [/B]Because mono amps tend to be Class D amplifiers, they are a good choice for powering subwoofers — Class D amplifiers have a high power-to-heat ratio and [B]excellent efficiency[/B], which are exactly what you want when dealing with power-hungry low frequency signals. Most mono amplifiers are designed to run at 2 ohms; some are even 1-ohm stable. Multichannel amplifiers, on the other hand, are typically designed to work with a 4-ohm load. This is an important difference when using your amp to power multiple subwoofers, because you won't be able to bridge your multichannel, 4-ohm stable amp to power multiple subs that present less than a 4-ohm load. Instead, use a mono amplifier to power a 2-ohm load — two 4-ohm subwoofers, or 2, 2-ohm dual voice coil subwoofers, for example. You'll be able to push your subwoofers with the mono amp's maximum power, without running at a dangerous impedance. [/QUOTE]

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