Harlequin 48K - Loud Speaker Circuit

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valentin
Posts: 35
Joined: Mon Nov 22, 2021 2:57 pm
Location: Faversham, UK

Harlequin 48K - Loud Speaker Circuit

Post by valentin »

Hello,

If I don't want to use the internal speaker (audio will be routed via the RGB connector to the TV's speaker, using the SCART input), am I correct in assuming I don't need to solder the follwoing components:

- Transistor Q5 (BC548)
- Diode D9 (1N4148)
- Resistor R47 (22K)
- Capacitor C34 (0.1uF)

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A good weekend to all,
Valentin
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1024MAK
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Joined: Mon Sep 26, 2011 10:56 am
Location: Looking forward to summer in Somerset, UK...

Re: Harlequin 48K - Loud Speaker Circuit

Post by 1024MAK »

Correct :D

Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp

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Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb :!:
Looking forward to summer later in the year.
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