JBL S4Ai, S4VC, S4HC I

or or

One S4HChorizontal channel

flush-mount loudspeaker

One S4VCvertical channel

flush-mount loudspeaker One S4Aimultipole ambient

flush-mount loudspeaker

Four mounting L-brackets with

eight 1/4-20 x 3/4" screws

Eight 8-32 x 1/2" screws for

speaker installation

One grille with grille frame

INCLUDED

Contents

Main C I THX U LTRA 2-LICENSEDHOME AUDIO SYSTEM: F LUSH -M OUNT A PPEARANCE : PURE-TITANIUM,HIGH-FREQUENCY TRANSDUCER DOME: E LLIPTICAL O BLATE S PHEROIDAL (EOS ) W AVEGUIDE : I L EFT AND R IGHT S PEAKERS : C ENTER C HANNEL S S4VC: S4HC : A MBIENT S URROUND S PEAKERS : 5.1-C HANNEL S 6.1-C HANNEL S 7.1-C HANNEL S S4Ai MODES OF OPERATION S4Ai WIRING GUIDE WHICH DIFFUSE MODE IS THE RIGHT ONE FOR THE JOB? DIPOLE MODE ISTYPICALLYUSED WHEN: BIPOLE MODE ISTYPICALLYUSED WHEN: P REPARING THE S4Ai FOR THE C O PERATIONAL M S4Ai ORIENTATION VERTICAL OR HORIZONTAL S4Ai D UAL -DRIVE MO S PEAKER -M OUNTING O Page R EQUIREMENTS FOR M OPTION 2RETROFIT/PREEXISTING C ONSTRUCTION : C ONNECTING THE S PEAKERSTO THE R EST OF Y OUR S P REPARING THE H OOKUP W A COUSTICAL P ROBLEMS IN L ISTENING R R OOM R E XCESSIVE U SE OF A BSORPTIVE M SOLUTIONS TO ROOM REFLECTIONS: DIFFUSION AND ABSORPTION S LAP E ROOM ABSORPTION FOR HOME THEATER SYSTEMS Dead zone absorbs front-speaker reflection Live zone provides surround propagation R B ACKGROUND N B ACKGROUND -N OISE S S TANDING W STANDING-WAVESOLUTIONS: ROOM RATIOS S TANDING -WAVE S OLUTIONS :SPEAKER P STANDING-WAVE SOLUTIONS: A How to improve a 2nd-order standing wave S TANDING -W AVE S OLUTIONS :R OOM E Page T S