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Chip Amps Amplifiers based on integrated circuits

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Old 15th July 2005, 02:11 PM   #1
david90 is offline david90  United States
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Default LM3876 newbie question

what is the max voltage I can input into the chip? My stock head unit put out 15w/chan so would I need to lower the powe before I input it into the chip?

Car amplifiers amplify by increasing the amplitude or the current to the speaker for more wattage? Since p=vi, u can increase either to get more wattage?
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Old 15th July 2005, 02:17 PM   #2
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(Read The ******** Data Sheet)

LM3876 Datasheet

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Old 15th July 2005, 02:20 PM   #3
DonoMan is offline DonoMan  United States
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At 4 ohms (what output the HU is rated at, not what your speakers are), that's about 8 volts. At 10 ohms, that's about 12 volts. Just make sure to set your gain on the amp accordingly low and it should work fine.
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Old 17th July 2005, 04:23 PM   #4
david90 is offline david90  United States
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i don't get it. how did you get 8 and 10 volt and what do they repressent? I know what voltage is.
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