Alley arcade, walk, steps, yard, terrace, and close. While both a court and close are usually defined as blind alleys, or "cul-de-sacs", several in London are throughways, for example Cavendish Court, a narrow passage leading from Houndsditch into Devonshire Square, and Angel Court, which links King Street and Pall Mall. Bartholomew Close is a narrow winding lane which can be called an alley by virtue of its narrowness, and because through-access requires the use of passages and courts between Little Britain, and Long Lane and Aldersgate Street. In an old neighbourhood of the City of London, Exchange Alley or Change Alley
Power Alley Power Alley Power Alley is a term used in audio engineering to denote the line between subwoofers where output from each subwoofer is in phase and is noticeably louder. Subwoofers placed at each side of the stage will typically cancel unpredictably everywhere in the listening area except along the center line between the speakers. Because of this, placing subwoofer cabinets together tends to give a smoother response to each member of the audience. This is explained in detail in "The Power Alley ". Centering the subwoofers between the high end cabinets tends to minimize the timing error throughout the listening