ELFORUM - Forumul Electronistilor

8 ohm pus pe 4 ohm

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ce se intampla in cazul in care pun un difuzor de 8 ohm pe o iesire de 4 ohm?ex: daca pun un dif de 20 W 8 Ohm pe o iesire de 20 W 4 ohm voi avea de fapt 10 W sau cum?

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daca statia are 20W in 4 ohmi si tu pui un dif de 8 ohmi o sa ai cam 11-12W

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Din P=U^2/R unde P=20W reiese limpede injumatatirea puterii maxime livrate de statie difuzorului de 8ohm.

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si caderea de tensiune de pe traf unde o lasi in ecuatia aia???sau vrei sa zic ca transformatoarele sunt..ideale??? :rolleyes: atunci cum de MAJORITATEA amplifiatoarelor au asa: 360-380W pe 2 ohmi -> 250-280 pe 4 ohmi -> 180W pe 8 ohmi in general majoritatea producatoriilor iau ceva de genul : V peak la iesire = V alimentare- / 1.1 pana la 1.15 asta pt 8 ohmi, si Vpeak la iesire = V alimentare /1.2 pana la 1.29 pt 4 ohmi, si Vpeak la iesire =V alimentare / 1.35 pana la 1.44 pt 2 ohmi...si nu vorbesc aici de sony sau panasonic (astia habar nu am cum calculeaza),vorbesc de qsc, electrovoice, krown..etc

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