The output of an amplifier is usually stated differently, eg., 30 watts RMS per channel into 8 ohms. Sometimes in addition a manufacturer might state a "total music power".
Manufacturers quote an RMS power output figure as a means of comparing one system with another but in reality these figures prove little in the real world of music and speech and the figure for total music power is even less realistic, as this figure often is based on mathematical trickery and/or notional quantities.
When an output is quoted as being into an 8 ohm it is often theoretically possible to use 4 ohm speakers instead and double the power output. Some amplifiers are quoted with both types of speakers but using 4 ohm instead of 8 ohm is likely to be an expensive mistake in most cases.
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The output of an amplifier is usually stated differently, eg., 30 watts RMS per channel into 8 ohms.
Sometimes in addition a manufacturer might state a "total music power".
Manufacturers quote an RMS power output figure as a means of comparing one system with another but in reality these figures prove little in the real world of music and speech and the figure for total music power is even less realistic, as this figure often is based on mathematical trickery and/or notional quantities.
When an output is quoted as being into an 8 ohm it is often theoretically possible to use 4 ohm speakers instead and double the power output. Some amplifiers are quoted with both types of speakers but using 4 ohm instead of 8 ohm is likely to be an expensive mistake in most cases.