Abstract: An audio apparatus for a vehicle is disclosed having an audio signal generator, an amplifier operatively connected to the generator for amplifying an audio signal received from the generator, a speaker for emitting sounds and which is driven by the amplifier, a vehicle speed detector, and a gain control operatively connected to the speed detector for generating a control signal and providing it to the amplifier, such that the control signal increases the gain of the amplifier according to an increase in the output of the vehicle speed detector.

Abstract: Apparatus for guiding a cooling air flow for an engine of a motorized two-wheeled vehicle having a vehicle body provided with an internal combustion engine and a blower for forcibly cooling the engine, the apparatus comprising a guide plate mounted behind the blower so that warm air obtained after cooling can be guided by the plate to the outside of the vehicle body. When the engine is water-cooled it is provided with a radiator at the front thereof and the blower is positioned between the radiator and the engine. The guide plate is positioned between the blower and the engine.