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L-Pad Attenuators

Constant impedance volume controls.

L-Pad attenuators are used to adjust the output levels of speakers somewhat like a volume control. The basic internal configuration of an L-pad is a ganged network of two variable power resistors, one in series with the speaker and the other in parallel thus providing a constant impedance regardless of their setting; this allows fine tuning and balancing of multiple unit systems. As the impedance remains constant, the crossover is unaffected.

L-pad diagram

Though primarily associated with midrange and treble drivers, the higher powered L-Pads can be used to control low frequency drivers; many of our customers use these in guitar amplifiers.

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