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所用器材的规格:(1)20瓦或25瓦扩大机(普通在礼堂做报告、放唱片用的)一台。(2)12时低音喇叭两个。(3)电唱头一个。(4)长80公分、圆周为3公厘的钢簧一条(苏联16厘米电影放映机上作收片用的钢弹簧带,最好用旧的,因为用新的发出来的音响效果并不太好)。操作方法:将弹簧的一端接到电唱头按唱针的地方,将电唱头的输出插头插入扩音机的话筒插口内,开扩音机,将音质控制纽旋到低音处,全部准备好如图,这就可可以做各种音响效果了。炮弹出口的声音——将弹簧的一端固定在一个地力(随便什么地方都可以,只要操作方便就行),一手拿着电唱头,要拉紧,用另一手的手指去敲弹簧,敲
Equipment specifications: (1) 20-watt or 25-watt amplifier (usually reported in the auditorium, used to record the use of a). (2) 12 bass speakers two. (3) a singing head. (4) A steel spring of 80 centimeters in length and 3 millimeters in circumference (a spring steel strip for the receipt of a film on a Soviet 16-cm film projector is best used, since the new sound is not too new it is good). Operation method: Connect one end of the spring to the singing head and press the place of the singing needle. Plug the output head of the singing head into the microphone jack of the amplifier, and open the loudspeaker to screw the sound quality control knob to the bass place. All the pictures are ready. You can do a variety of sound effects. The sound of the exit of the cannon - the spring is fixed at one end of a ground force (whatever can be anywhere, as long as the easy operation on the line), holding the hand in one hand, to tighten, with the other hand to knock the spring finger knock