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QSC AD-C series User Manual

Manual is about: AD-C820/AD-C821/AD-C1200

Summary of AD-C series

  • Page 1

    Ad-c820/ad-c821/ ad-c1200 user manual ad-c820 – 203 mm (8 " ) 2-way coax baffle assembly ad-c800bb – pre-install enclosure for ad-c820 ad-c821 – 203 mm (8 " ) 2-way coax blind-mount ad-c800 rail kit – split ring and tile rails for ad-c821 ad-c800rg – round grille for 8 " loudspeaker ad-c800sg – squa...

  • Page 2

    1 2 important safety precautions and explanation of symbols warning! 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Clean only with a dry cloth. 6. Install in accordance with qsc audio product’s instructions and local building codes. The ...

  • Page 3

    1 2 introduction congratulations and thank you for your ceiling loudspeaker purchase. The ad-c820, ad-c821 and ad-c1200 models offer excellent acoustic performance in an easy-to-install and attractive package. Please review these instructions carefully and follow the recommendations. Installation sh...

  • Page 4

    3 4 features ad-c821 loudspeaker system a. Pivoting connection cover b. Euro connectors c. Pivoting connection cover retaining screw d. Loudspeaker wiring hole e. Seismic mounting tab f. Mounting tabs g. Grille attachment magnets h. Tap switch (transformer included) e d c b a f g h – figure 1 – – fi...

  • Page 5

    3 4 a. Mounting tabs b. Grille attachment magnets c. Tap switch (transformer included in ad-c800bb) ad-c820 loudspeaker baffle a. Dual knockouts (½" and ¾") (qty: 5) b. Ceramic terminal block c. Transformer d. Mounting straps (qty: 4) e. Ten-pin mate-n-lok ™ e d c b a c a b ad-c800bb back box a a a ...

  • Page 6

    5 6 the ad-c800 rail kit is sold separately for use with the ad-c821 loudspeaker system. Ad-c800 rail kit sold separately for use with the ad-c820 and ad-c821 loudspeaker systems ad-c800sg/rg loudspeaker grilles split ring suspended-ceiling tile rail ad-c800rg ad-c800sg – figure 5 – – figure 6 – – f...

  • Page 7

    5 6 a. Dual euro connectors b. 150 w transformer for 70/100 v distributed loudspeaker systems c. Crossover network d. Installation hook ad-c1200 loudspeaker baffle sold separately for use with ad-c1200 loudspeaker baffle ad-c1200bb back box d c b a a. Dual knockouts (½" and ¾") (qty: 5) b. Mounting ...

  • Page 8

    7 8 ad-c1200sg loudspeaker grille ad-c821 installation options the ad-c821 loudspeaker system is a blind-mount design made to mount into finished ceilings. The ad-c821 loudspeaker system can be mounted in suspended ceilings, as well as non-suspended ceiling types. We recommend that you consult an in...

  • Page 9

    7 8 ad-c821 installation tools and parts required for installation 1. #2 phillips head screwdriver 2. Torque driver 3. Wire stripping tool 4. Soldering equipment 5. Tool for cutting loudspeaker mounting hole in ceiling. Must be able to cut a circular hole through the ceiling without damaging the str...

  • Page 10

    9 10 install split ring and suspended-ceiling tile rails 1. Skip this step if installing in a non-suspended ceiling. Pass the two suspended-ceiling tile rails (figure 6) through the hole and place on both sides of the mounting hole 15.16" (395 mm) apart, as shown in (figure 12) and install onto the ...

  • Page 11

    9 10 support and wire the loudspeaker system important: loudspeakers can potentially generate substantial vibration. In addition to ensuring all hardware is properly installed and secure, you must use the seismic support bracket on the loudspeaker to secure the loudspeaker to an appropriate structur...

  • Page 12

    11 12 ad-c800bb and ad-c820 installation the ad-c800bb is designed to be pre-installed into the ceiling and wired. The ad-c820 loudspeaker baffle assembly is plugged into and secured to the back box at a later time. Ad-c800bb back box installation the ad-c800bb installation should be done by a licen...

  • Page 13

    11 12 a. Facility’s loudspeaker signal wiring b. Ceramic terminal block c. Wiring to loudspeaker baffle d. Wire holding screws – figure 17 – ad-c820 installation 1. Connect the 10-pin mate-n-lok ™ connector from the ad-c800bb to j1 on the transformer tap switch pcb. 2. Connect the 3 faston connector...

  • Page 14

    13 14 mount the ad-c820 or ad-c821 loudspeaker system note: the mounting clamps are part of the assembly and allow for mounting surfaces (ceiling) up to 2.75" in thickness. Do not install the grille until clamps have been tightened and any adjustments made. 1. Before inserting the loudspeaker into t...

  • Page 15

    13 14 2. Make sure all tests and adjustments are complete before installing the grille. 3. Locate the loudspeaker grille. 4. The loudspeaker system and grille both have a grille-retaining safety tether. Using the clip on the grille’s tether, attach the grille’s safety tether to the loudspeaker’s saf...

  • Page 16

    15 16 ad-c1200 and ad-c1200bb installation the ad-c1200bb back box is designed to be pre-installed into the ceiling and wired. The ad-c1200 loudspeaker baffle assembly is plugged into and secured to the back box at a later time. Ad-c1200bb installation the ad-c1200bb installation should be done by a...

  • Page 17

    15 16 ad-c1200 installation note: ad-c1200 comes pre-wired, from the factory, for transformer tap applications. To bypass the transformer see “remove transformer from the ad-c1200 circuitry” in this section. 1. Locate and remove the five-pin euro-style connector plug included with the loudspeaker ba...

  • Page 18

    17 18 1. Tighten the m3 wire retaining screws. 2. Reconnect the five-pin euro-style connector plug into its mate on the pcb. Make sure all connections are secure. Caution: the ad-c1200 loudspeaker baffle assembly weighs 25 lbs (11.3 kg.) be sure to use proper safety precautions. 3. Lift the loudspea...

  • Page 19

    17 18 a. Baffle mounting holes — 6 places b. Grille mounting holes — 4 places c. Extra mounting holes — 4 places 5. Locate the loudspeaker’s grille. 6. Using a #2 phillips head screwdriver, install the grille with the m4 screws provided. Note: the use of loctite ® is recommended to prevent grille sc...

  • Page 20

    19 20 disconnect transformer from the ad-c1200 circuitry if you are connecting the loudspeaker to a 16 ohm system, you must disconnect the transformer. 1. Unplug the two-pin euro-style plug (j1) on the pcb (figure 25) . 2. Loosen the two m3 wire securing screws using a #1 phillips head screwdriver a...

  • Page 21

    19 20 dimensions ad-c800bb note: the 11.5" measurement is the actual dimension of the hardware. For cutting the mounting hole, refer to the cut mounting hole in ceiling section in this document. 11.8 " 299 mm 8.0 " 202.3 mm 10.9 " 275.7 mm 11.2 " 283.7 mm 0.3 " 0.8 mm 11.5 " 292.1 mm 11.5 " 292 mm a...

  • Page 22

    21 22 dimensions continued 23.0 " 584 mm 14.6 " 371 mm 15.0 " 381 mm 15.5 " 394 mm 17.9 " 555 mm 20.4 " 518 mm ad-c1200bb ceiling cutout dim = 376 mm x 376 mm 14.6 " 371 mm.

  • Page 23

    21 22 specifications ad-c820/ad-c800bb ad-c821 ad-c1200/ad-c1200bb system configuration passive passive frequency response (-6 db) 61 hz – 18 khz 61 hz – 18 khz 42 hz – 18 khz frequency range (-10 db) 52 hz – 18 khz 52 hz – 18 khz 37 hz – 18 khz system calculated maximum output (rms) 114 db 114 db 1...

  • Page 24

    Mailing address: qsc audio products, llc 1675 macarthur boulevard costa mesa, ca 92626-1468 usa telephone numbers: main number: (714) 754-6175 sales & marketing: (714) 957-7100 or toll free (usa only) (800) 854-4079 customer service: (714) 957-7150 or toll free (usa only) (800) 772-2834 facsimile nu...