Thread: Zx81
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Old 22nd Apr 2020, 11:31 am   #273
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,482
Default Re: Zx81

May I draw your attention to the paragraph "Mic Levels" on the first page of the manual?

The video and tape signals are somewhat interconnected on the ZX81 so any change to the video output circuit can mean that you may need to set the loading volume to a substantially different level to the one which worked previously.
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