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 Driver attenuation circuit calculator (L-Pad)

Driver attenuation circuits are used to decrease the output level of a driver. This is useful in a multiple driver system where the drivers do not have the same sensitivity. A L-Pad, or driver attenuation circuit, can be used to decrease the output levels of the louder driver to match the sensitivity of the less sensitive driver.

Driver attenuation

Driver attenuator circuit


Change parameters to your requirements

Driver Z
Ohm
Attenuation A
dB
Channel power
W

Calculated values

R1 = 2.34 Ohm 7.3 watts

R2 = 19.39 Ohm 5.2 watts

Channel power = 25 watts

Driver power = 12.5 watts

Recommended values

=

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