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QSC DCA 1222 User Manual

Other manuals for DCA 1222: Brochure, User Manual, User Manual, User Manual

Summary of DCA 1222

  • Page 1

    1 • dca1222 • dca1622 • dca2422 • dca3022 • dca3422 • dca1824 • dca1644 dca ™ digital cinema amplifi ers dca ™ 数字影院功放大器 td-000075-05-a user manual 用户手册 *td-000075-05*.

  • Page 2

    Important safety precautions & explanation of symbols 1- read these instructions. 2- keep these instructions. 3- heed all warnings. 4- follow all instructions. 5- warning: to prevent fi re or electric shock, do not expose this equipment to rain or moisture. Do not use this apparatus near water. 6- c...

  • Page 3

    Explanation of graphical symbols ................................................................................. 2 图形符号说明 table of contents........................................................................................................ 3 目录 declaration of conformity ..........................

  • Page 4

    4 ec declaration of conformity for model plx, dca, and cx professional power amplifi ers including the models plx1202, plx1602, plx2402, plx3002, plx3402, dca1222, dca1622, dca2422, dca3022, dca3422, cx032, cx502, cx702, cx902, cx1102, cx302v, cx602v, and cx1202v. Qsc audio products, llc, decalres a...

  • Page 5

    5 introduction 简介 © copyright 1998, 1999, 2005, 2007, qsc audio products, llc qsc® is a registered trademark of qsc audio products, llc “qsc” and the qsc logo are registered with the u.S. Patent and trademark offi ce. All other trademarks are the property of their respective owners. Left: the front ...

  • Page 6

    6 特性 • 五个双声道和两个四声道型号 • 屏蔽带和 neutrik speakon™* 输出端连接器 • 零涌入电流，以防止在打开时激发断路器 • 用于跨接和监视的数据埠 • 独立和用户可控的削波限制器 • 完全可选低频滤波； 30 或 50 hz 滚降选择 • 立体声（双声道）、并行输入或桥式单声操作模式 • 平衡输入端： xlr ， ¼" (6.3 mm) trs* 和 “ 欧式 ” 可隔离接线盒 • 带有安全盖的凹进式平缓增益控制器 • 电源、信号、 -20 和 -10 db 、削波/保护、并行输入端和桥式单 声模式的前面板 led 指示灯 • 采用 qsc 专有高性能 powerl...

  • Page 7

    7 front panel 1. Power switch 2. Cooling vents 3. Gain control (1 per channel) 4. Clip , -10 db , -20 db and signal indicator leds, all channels 5. Power , bridge , and parallel indicator leds 6. Handles 7. Security panel 前面板 1. 电源开关 2. 散热口 3. 增益控制器（每声道 1 个） 4. 削波， -10 db 、 -20 db 和信号 指示灯 led ，所有声道 ...

  • Page 8

    8 rear panel 1. Terminal block inputs 2. Dataport 3. Xlr inputs 4. Confi guration switch 5. Confi guration switch chart 6. Trs inputs 7. Speakon output, channel 1 plus channel 2 (4-wire) 8. Speakon output, channel 2 9. Barrier strip outputs 10. Cooling air inlet vents 11. Serial number label 12. Iec...

  • Page 9

    9 clip limiter description when the audio signal drives the amp's output circuit beyond its power capability, it clips, fl attening the peaks of the waveform. The clip limiter detects this and quickly reduces the gain to minimize the amount of overdrive. To preserve as much of the program dynamics a...

  • Page 10

    10 input fi lter description the low-frequency (lf) fi lter rolls off signals below either 30 hz or 50 hz. This improves bass performance by limiting sub-audio cone motion, making more power available for the speakers' rated frequency range. The fi lter settings for each channel are controlled indiv...

  • Page 11

    11 parallel input mode description the "parallel input" switches let you operate the amplifi er in parallel mode, delivering the same signal to two channels without using a y-cable. Each channel drives its own speaker load, with independent gain, fi ltering, and clip limiting. Set switch positions 4...

  • Page 12

    12 features & setup 功能与设置 branching to other amps in addition to parallel mode, you can parallel the inputs in bridged mono mode to carry the signal to additional amplifi ers through the unused extra input jacks. This is often called a "daisy-chain." see page 14 for an explanation of amp operating m...

  • Page 13

    13 features & setup bridge mono mode description bridged mono mode combines the power of two amplifi er channels (channels 1 & 2, and/or 3 & 4) into one speaker load, resulting in twice the voltage swing, four times the peak power, and approximately three times the sustained power of a single channe...

  • Page 14

    14 features & setup 功能与设置 bridge mono mode (continued) bridged-mono precautions: this mode puts a high demand on the amplifi er and speaker, exces- sive clipping may cause protective muting or speaker damage. Be sure the speaker has a suffi cient power rating. Output voltages greater than 100 volts ...

  • Page 15

    15 features & setup what are the differences among stereo, parallel input, and bridge mono modes? Stereo mode this is the "normal" way of using the amplifi er, in which each channel is fully independent. Separate signals connect at the inputs, the gain knobs control their respective channels, and se...

  • Page 16

    16 features & setup bridge mono mode this mode combines the full power capabilities of both channels into a single speaker system. The amplifi er internally re-confi gures so that both channels operate as a unit. This delivers double the output voltage, resulting in four times the peak power and thr...

  • Page 17

    17 3.50" 88.9 mm 13.0" 330.2 mm 13.0" 330.2 mm 14.0" 355.6 mm 17.30" 440 mm p o w e r o f f - - dca 3022 28 28 安装 使用四颗螺钉和垫圈将放大器安装到前机架导轨上。 还需背后对放大器进行支撑，尤其是在移动使用中； qsc 技术服 务部提供后机架柄安装件，也可从您的经销商或分销商处特别订 购。 installation use four screws and washers when mounting the amplifi er to the front rack rails. Sup...

  • Page 18

    18 connections clip lim clip lim mode swi mode swi ch ch filter o filter o 30 hz fil 30 hz fil bridge o bridge mono off 50 hz inputs parall stereo 50 hz 1 2 3 4 5 6 7 8 9 10 1 1 shield or ou oder ó 连接 输入端 每个声道都具有活动的平衡“欧式”接线盒输入端，该输入端带 有 20,000 欧姆的平衡阻抗或 10,000 欧姆的非平衡阻抗。双声道 型号还具有并行连接到接线盒输入端的 xlr 和 ¼ 英寸...

  • Page 19

    19 terminal block unbal-anced • 非平衡接线盒 inputs (continued) balanced inputs : use the xlr or ¼-inch (6.3 mm) trs input jacks, or the detachable terminal blocks. Unbalanced inputs : connect the unused side of the balanced input to ground, as shown at left. A tip-sleeve ¼-inch (6.3 mm) connector will co...

  • Page 20

    20 speakon™ outputs (two-channel models) the two-channel dca amplifi ers offer a choice of output connections: two neutrik nl4md speakon jacks and a barrier strip with screw terminals. The speakon connector is designed specially for high-power speaker connec- tions. It locks in place, prevents shock...

  • Page 21

    21 8 4 2 * 1.6 ** Ω Ω Ω Ω 8 4 2 * 1.6 ** Ω Ω Ω Ω * ** except dca 1644 dca 1222 only 16 8 4 * 3.2 ** Ω Ω Ω Ω 2 Ω 2 Ω * ** except dca 1644 dca 1222 only connections 连接 屏蔽带输出端 (所有型号） 请在接触输出端连接前关闭放大器。请使用具有绝缘套管的扁平 接线片，以防止电击。再次打开放大器前请裹住螺丝端子。 输出端子安全警告！放大器电源打开时切勿接触输出端子。进行所 有连线之前先关闭放大器电源。电击危险！ 立体声和并行操作的连接。 d...

  • Page 22

    22 connections 连接 dataport the amplifi er features a dataport, which connects to a qscontrol multisignal processor, dcm digital cinema monitor, or other qsc cinema accessories via the hd-15 connector. Accessories cinema accessories for the dca amplifi ers include crossover and fi lter mod- ules that...

  • Page 23

    23 operation ac power switch before applying power, check all connections and turn down the gain controls. The "soft start" sequence starts with the power indicator led at half bright- ness. A couple seconds later the fan starts and the amplifi er cycles through one second of protective muting, indi...

  • Page 24

    24 security panel after setting the gain controls, you can install the security panel to prevent tampering and accidental misadjustment. Installing the security panel 1. Use a 9/64" or 3.5 mm hex key to back the screw out several turns. 2. Slide the right end of the security panel just under the scr...

  • Page 25

    25 operation fan cooling tthe fan varies speed automatically to maintain safe internal temperatures and minimize noise. Keep the front and rear vents clear to allow full air fl ow. Hot air exhausts out the front of the amp so it does not heat the interior of the rack. Make sure that plenty of cool a...

  • Page 26

    26 a small passive system 小型被动系统 a typical 2-way system 典型 2 向系统 applications 应用.

  • Page 27

    27 a typical 3-way system 典型 3 向系统 going 3 ways with a single 4-channel amplifi er 采用具有单个 4 声道放大器的 3 向系统 applications 应用.

  • Page 28

    28 applications 应用 a typical 2-way system with dolby digital - surround ex 带有 dolby 数码 - 环绕 ex 的典型 2 向系统.

  • Page 29

    29 troubleshooting problem: no sound indication: power indicator not lit • check the ac plug. • confi rm that the ac outlet works by plugging in another device. If too many amplifi ers are used on one outlet, the building's circuit breaker may trip and shut off power. • an overload in bridged mono m...

  • Page 30

    30 no sound (continued) troubleshooting 没声音 （续） 现象：信号 led 指示灯对信号水平有反应 • 如果绿色的信号、 -20 db 和 -10 db 指示灯正常亮起，则可能是 放大器与扬声器之间的某个位置出现故障。请检查扬声器接线 是否断开。用另一个扬声器和线缆试一下。 indication: clip led fl ashing • if the red clip indicator fl ashes when signal is applied, the amplifi er output may be shorted. Check the sp...

  • Page 31

    31 indication: clip indicator not fl ashing • this could be caused by a faulty speaker or loose connection. Check the wir- ing and try another speaker. • the signal source may be clipping. Keep the amplifi er gain controls at least halfway up so that the source does not have to be overdriven. Troubl...

  • Page 32

    32 problem: hiss • unplug the amplifi er input to confi rm that the hiss is coming from the source or a device upstream; erratic or popping noises indicate an elec- tronic fault in the offending unit. • to keep the normal noise fl oor low, operate the primary signal source at full level, without cli...

  • Page 33

    33 inner workings an impressive amount of technology is packed "under the hood" of a dca series amplifi er. Thousands of watts of power fl ow inches away from state-of- the-art low noise inputs. Precise circuit layout and thorough protection assure that all of this activity occurs smoothly and safel...

  • Page 34

    34 high performance audio . High speed power transistors convert this dc power into the full range audio output which drives the speakers. High-current design and special dual-sense output feedback corrects errors on both sides of the speaker terminals, improving damping and control of speaker motio...

  • Page 35

    35 dca1222 dca1622 dca2422 dca3022 dca3422 output power in watts ftc: 20 hz–20 khz @ 0.03% thd, all channels driven 8 ohms per channel 170 250 375 500 650 ftc: 20 hz–20 khz @ 0.05% thd, all channels driven 4 ohms per channel 290 450 625 825 1050 eia: 1 khz @ 1% thd, one channel driven 8 ohms per cha...

  • Page 36

    36 dca1222 dca1622 dca2422 dca3022 dca3422 输出电源(瓦) ftc ： 20 hz–20 khz @ 0.03% thd ， 全声道驱动 每声道 8 欧姆 170 250 375 500 650 ftc ： 20 hz–20 khz @ 0.05% thd ， 全声道驱动 每声道 4 欧姆 290 450 625 825 1050 eia ： 1 khz @ 1% thd ，单声道驱动 每声道 8 欧姆 190 300 425 575 750 每声道 4 欧姆 350 550 775 1025 1250 每声道 2 欧姆 600 800 1200 15...

  • Page 37

    37 dca1824 dca1644 output power in watts ftc: 20 hz–20 khz @ 0.03% thd, all channels driven 8 ohms per channel 145 225 ftc: 20 hz–20 khz @ 0.05% thd, all channels driven 4 ohms per channel 240 ftc: 20 hz–20 khz @ 1% thd, all channels driven 4 ohms per channel 400 eia: 1 khz @ 1% thd, one channel dri...

  • Page 38

    38 dca1824 dca1644 输出电源 ( 瓦 ) ftc ： 20 hz–20 khz @ 0.03% thd ， 全声道驱动 每声道 8 欧姆 145 225 ftc ： 20 hz–20 khz @ 0.05% thd ， 全声道驱动 每声道 4 欧姆 240 ftc ： 20 hz–20 khz @ 1% thd ， 全声道驱动 每声道 4 欧姆 400 eia ： 1 khz @ 1% thd ，单声道驱动 每声道 8 欧姆 每声道 4 欧姆 450 每声道 2 欧姆 450 桥式单声： 16 欧姆， 20 hz–20 khz ， 0.1% thd 300 500 8 欧姆，...

  • Page 39

    39 specifications dca1222 dca1622 dca2422 dca3022 dca3422 load protection turn-on/turn-off muting, dc-fault power supply shutdown, clip limiting output circuit type ab ab h h h h ab: class ab complementary linear output h: class ab complementary linear output with class h 2-step high effi ciency cir...

  • Page 40

    40 规格 dca1222 dca1622 dca2422 dca3022 dca3422 负载保护 打开 / 关闭静音， dc 故障电源关闭、削波限制 输出电路类型 ab ab h h h h ab ： ab 类辅助线性输出 h ： ab 类辅助线性输出，使用 h 类 2 步阶高频电路 尺寸 19.0 英寸（ 48.3 厘米）宽， 3.5 英寸（ 8.9 厘米）高（双机架空间） 14.0 英寸（ 35.6 厘米）深（机架安装到后部支架端） 重量 运输： 28.2 磅（ 12.9 千克） 净重： 22.2 磅（ 10.1 千克） 电源要求 适用于 120 或 220–240 vac ， 50/...

  • Page 41

    41 specifications dca1824 dca1644 load protection turn-on/turn-off muting, dc-fault power supply shutdown, clip limiting output circuit type ab ab ab: class ab complementary linear output h: class ab complementary linear output with class h 2-step high effi ciency circuit dimensions 19.0" (48.3 cm) ...

  • Page 42

    42 规格 dca1824 dca1644 负载保护 打开 / 关闭静音， dc 故障电源关闭、削波限制 输出电路类型 ab ab ab ： ab 类辅助线性输出 h ： ab 类辅助线性输出，使用 h 类 2 步阶高频电路 尺寸 19.0 英寸（ 48.3 厘米）宽， 3.5 英寸（ 8.9 厘米）高（双机架空间） 14.0 英寸（ 35.6 厘米）深（机架安装到后部支架端） 重量 运输： 28.2 磅（ 12.9 千克） 净重： 22.2 磅（ 10.1 千克） 电源要求 适用于 120 或 220–240 vac ， 50/60 hz 功耗 @ 120 vac （双声道驱动） 将 230...

  • Page 43

    Warranty information (usa only; see your dealer or distributor) 保修信息 （仅限美国；请联系您的经销商或分销商） 免责声明 qsc audio products, llc 对于因疏忽或不适当的安装和/或使用本 dca 放大器产品而对扬声器、放 大器或任何其它设备所造成的任何损坏不承担任何责任。 qsc audio products 3 年有限质保 qsc audio products, llc (“qsc”) 担保其产品自销售之日起三年内不会发生材料或制造工艺缺陷；若 在正常安装和使用条件下发生的损坏，qsc 将按照本质保协议更换...

  • Page 44

    44 qsc audio products, llc 1675 macarthur boulevard costa mesa, california 92626 usa “qsc” and the qsc logo are registered with the u.S. Patent and trademark offi ce. ©1998, 1999, 2005, 2007 qsc audio products, llc how to contact qsc audio products 如何联系 qsc audio products mailing address: qsc audio ...