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210x285mm Q ". ~ PVC52 In-Wall AlB Speaker Switch 1. With volume control ~_o- - ,- (-__O_)---'~ _O--S"'pl, eaker A _________ , _ ~ r I----H +§ I-----~~ ~ stereo amplifier [> R+ RLL+ C~) R+ RLL+ D +~ I-----:~ - , --------- -~ I-----c'-I , - - - -c"1 + ~ ~ I ~ o +~ PAIRS SPEAKERS I-----~ 1-----<--@ '1 ~-,------,-~ ~ ~peakerB o @ :L ________ '--'='- _ D C) PAIRA SPEAKERS '--'='- 2. Without volume control ~ 0 C) r : peaker A stereo amplifier [> i - ----0- :+@ ' A OH i ---=-- :+----0- D R+ RLL+ ,--------- -, PAIR A SPEAKERS :-@ : ~ L _________ , --------i - ----0- B :+@ D , OH i ---=-----0- :+ PAIR B SPEAKERS :-@ (0 C) ~peakerB , OH : ~ 1______ - - - 0 • Volume control should be auto transformer type control. • The use of 8 ohm speakers is recommended. When A and B all selected, the net load to amplifier is 4