Parallel Input Mode - QSC DCA1222 User Manual

CLIP LIMITER ON
CLIP LIMITER OFF
LF FILTER OFF
LF FILTER ON
LF 50 HZ
LF 30 HZ
STEREO
BRIDGE MODE OFF
BR MODE ON
LF 50 HZ
LF 30 HZ
LF FILTER OFF
LF FILTER ON
CLIP LIMITER OFF
CLIP LIMITER ON
= NOT APPLICABLE
NON APPLICABLE
NICHT ANWENDBAR
MODE SWITCHES MODE SWITCHES
Jumpers
CH1 CH1
CH1 CH1 CH2 CH2
INPUT INPUT INPUT INPUT
DATA P ORT DATA P ORT
CH1 CH1 CH2 CH2
1 1
CH3 CH3
CH3 CH3 CH4 CH4
INPUT INPUT DATA P ORT DATA P ORT INPUT INPUT
CH3 CH3 CH4 CH4
1 1
OFF OFF
Signal in • Entrée du signal • "PARALLEL INPUTS"
Signaleingang • Entrada del señal

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
PARALLEL INPUTS
channel drives its own speaker load, with independent gain, fi ltering, and clip
limiting.
Set switch positions 4, 5, and 6 "ON" to couple the inputs together. Turn the
switches off for stereo, bi-amping, or other 2-channel modes. The yel-
low PARALLEL LED indicator on the front panel warns you when the switches
are set to parallel.
1 signal / 2 channels
Parallel the inputs when you need to drive two amp channels with one input
signal (parallel mode) while keeping separate control of both channels' gain,
fi ltering, and limiting, such as in a surround system.
On four-channel DCA models, the upper set of parallel input DIP switches join
Channels 1 and 2 in parallel, and the lower set join Channels 3 and 4.
CH2 CH2
PARALLEL PARALLEL
INPUTS INPUTS
CH3 CH3
CH 1 CH 1
OUTPUT OUTPUT
2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10
1 signal / 4 channels
1 1
3 3
MONITOR MONITOR
STEREO STEREO
MONITOR MONITOR
CH4 CH4
MONITOR MONITOR
PARALLEL PARALLEL
4 4
INPUTS INPUTS 2 2
Four-channel models can be operated in parallel, with channels 1 and 2 and/or
CH 2 CH 2 3 and 4 linked together.
CH4 CH4
2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10
OUTPUT OUTPUT
STEREO STEREO
To operate all four channels in parallel, run a pair of wire jumpers between
MODE SWITCHES MODE SWITCHES
the corresponding + and - inputs of Channel 2's and Channel 3's detachable
terminal blocks. Set both of the amp's DIP
switches to "Parallel inputs." Use Channel 1 as the signal input.
Route the four amplifi er channel outputs to their respective speaker loads. The
load impedances do not have to be the same on all channels.
FEATURES & SETUP
功能与设置
并行输入模式
说明
使用"并行输入"开关可以在并行模式中对放大器进行操作，无
需使用 Y 型电缆即可将相同信号发送到两个声道。每个声道均通
过独立的增益、滤波和削波限制来驱动其自身的扬声器负载。
将开关位置 4、5 和 6 设置为"打开"，使输入成对。对于立体
声、双放大器或其他双声道模式，请关闭开关。前面板上的黄色
并行 LED 指示灯将在开关设置为并行时向您发出警告。
1 信号/2 声道
需要使用单个输入信号驱动两个放大器声道（并行模式），同时
保持对两个声道的增益、滤波和限制的控制（比如在环绕系统
中）时，请使输入端保持并行。
在四声道 DCA 型号上，上方组合的并行输入 DIP 开关将声道 1 和
声道 2 并行合并起来，下方组合则将声道 3 和声道 4 合并起来。
1 信号/4 声道
四声道型号可以将声道 1 和 2 和/或 3 和 4 链接起来，以并行方式
操作。
要以并行方式操作所有四个声道，请在声道 2 和声道 3 的可隔离
接线盒的对应 + 和 - 输入端之间布置一对跳线。将两个放大器的
DIP 开关都设置为"并行输入"。使用声道 1 作为信号输入端。
将四个放大器的声道输出都连接到其各自的扬声器负载。所有声
道上的负载阻抗无需相同。
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