The instantaneous peak power output of the power amplifier can reach twice the rated power, that is, the100W power amplifier can output 200W instantaneous peak power.
In high dynamic music occasions such as symphony, the power amplifier is equipped with twice the speaker power in order to obtain high dynamic effect. This requires a good Andhadhun to operate, otherwise it is common to burn horns.
The dynamic changes of general meeting occasions are not great. We can allocate power amplifiers according to the ratio of 1 to 1. Many times we use a compromise method to match the power amplifier, that is, 1. 1- 1.5 times the rated power of the speaker.
Generally, power amplifiers are dual-channel, and the expression of power is 2 * 200 w/8 Ω, that is to say, when the impedance is 8 Ω, the two channels output 200 W rated power respectively. Generally, the parameters of power amplifier will be marked with rated power under 8 Ω, 4 Ω and 2 Ω impedances. Power amplifier description.
How much W/ how much Ω will be marked in the manual of the speaker, usually 8 Ω or 4 Ω. Two 8Ω speakers are connected in parallel to form 4Ω, and two 4Ω speakers are connected in series to form 8Ω.
If there are too few missing parameters. Let me assume that if your stereo is 85W/8Ω, one amplifier pushes two, and if the amplifier is equipped with 1.5 times, you need 2 *127W/8Ω power.
If you are a four-speaker amplifier, and two speakers are connected in parallel, it becomes170w/4Ω, or you need 1.5 times the power amplifier, and you need12 * 255w/4Ω.