Marantz_SD-60_main_audio_PCB_-_NEC_uPC1297_Dolby_HX_Pro_IC.jpg
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Summary
Description Marantz SD-60 main audio PCB - NEC uPC1297 Dolby HX Pro IC.jpg |
English:
Marantz SD-60 main audio PCB - NEC uPC1297 Dolby HX Pro IC with associated components. The stereo circuit modulates two AC bias currents and injects them into the recording head via two small push-pull transformers (next to pins 9 and 10). This is a rare example of user-defeatable HX Pro; more often, the circuit is hard-wired into the recording chain and cannot be turned off.
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Date | ||||
Source | Own work | |||
Author | Retired electrician | |||
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