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问:我的一台港产ONWA,K-7012双卡收录机在一次用快速录音连续转录了四、五盒磁带之后,转录的磁带放音时比原带速度快。我以为是M_1、M_2电机转速不同步,但是常速录音没有变化,快速转录的磁带不仔细听快慢也难辨别,当混合放音时就很明显了,不知是哪部分出了故障?能否修复?(江西遂川郭建慧)答:你的双卡收录机在复制磁带时,其中复制出来的磁带放音比原声带的放音速度仅仅快一点,不仔细听难以区别,说明该机基本上还是可以的。因为双卡收录机中的两只电动机的转速的确存在着一定的误差,它们的转速每分钟达千转甚至几千转,相差几转至几十转,人们的感觉是难以区别出来的。更何况双卡收录机有两套传动机构,其中任何一套机械装置的不灵活,增大了摩擦阻力就会使该套传动装
Q: One of my local ONWA, K-7012 dual-card recorders recorded four or five cassettes in a row with fast recording, and the transcribed tape played faster than the original tape. I thought it was M_1, M_2 motor speed is not synchronized, but there is no change in constant speed recording, fast transcription of the tape is not easy to tell the speed is hard to tell when mixed playback is very obvious, I do not know what part of the fault? Repair? (Jiangxi Suichuan Guo Jianhui) A: Your dual-card Cassette tape in the copy, which reproduced the tape playback speed than the original soundtrack just a little faster, do not listen to the hard to distinguish, that the machine is basically still can of. Because the two card recorders in the two motor speed does exist a certain error, their speed up to thousands of revolutions per minute or even thousands of revolutions, the difference between a few turn to dozens of revolutions, people feel is difficult to distinguish. Not to mention dual card recorders have two sets of transmission, of which any set of mechanical devices are not flexible, increased friction will make the set of transmission