Loudspeaker power consumption display - has lamps indicating when overload switch in speaker channel is operating

摘要

The loudspeaker unit contians at least one woofer, a squaker, a tweeter and at least one cross-over unit. An automatic power measuring device combined with a power supply and connected to an optical display is connected to the l.f. input. The total power applied to the l.f. input is displayed. At least one signalling lamp is connected to the current supply through a time switch to indicate that the unit is on. An overload or overdrive lamp is provided for each channel and connected to an "off contact" of an overload or overdrive switch in the respective channel.