Related Clues:

• Sound carrier
• Sun. speaker
• Race the engine
• Inclined roadway
• Rock blaster?
• Interstate entrance/exit
• Way up or down
• Loudness increaser, at a concert
• King or Graham
• The R in RPM
• Inclined path for wheelchairs
• Prepare to drag-race
• Gig equipment
• Boat launch
• Hi-fi component