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长虹C2939AE彩电有两路立体声信号输出,其中主声道的输出功率为5.2W×2,重低音输出功率为7.2W。它的声音处理部分具有两种环绕声模式,环绕效果分别可调,重低音效果也可切换和调整,另外,它还具有双声道高低音提升功能。这一型号彩电的音频电路分布于几块印制板上,笔者将其绘制于一张图上,刊于本刊本期中心插页,供读者维修时参考。 C2939AE彩电有三路音频信号源。其中两路分别为AV组左、右声道立体声输入AV1、AV2。这两路信号源采用RCA插座输入,其中R声道采用三芯插座。插头插入后,动片断开两个声道独立进入系统。若是单声道输入,信号须从L声道插入,此时R声道与之并联,两个声道同时处理
Changhong C2939AE color TV has two stereo signal output, of which the main channel output power of 5.2W × 2, subwoofer output power of 7.2W. It has two surround sound modes in its sound processing section, adjustable surrounds and subwoofer effects, as well as two-channel bass boost. This type of color TV audio circuit is located in a few pieces of printed circuit board, the author draws it on a map, published in the current issue of the center insert, for readers reference maintenance. C2939AE color TV has three audio sources. Two of them are AV group left and right channel stereo input AV1, AV2. The two signal sources using RCA socket input, which uses three-channel R channel socket. After the plug is inserted, the moving piece breaks two channels and enters the system independently. If the mono input, the signal must be inserted from the L channel, then R channel with parallel, two channels simultaneously