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Constructing the Mars Kit 2 Mk 2 tube amplifier kit
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<blockquote data-quote="Mars" data-source="post: 1147989" data-attributes="member: 817"><p>Next we connected up the heater circuit. This is quite simple: all tube's heaters are connected in parallel. </p><p>Three things to take into account:</p><ol> <li data-xf-list-type="ol">keep all the heaters in phase ("yellow" goes to same connector on all tubes; and same for "white")</li> <li data-xf-list-type="ol">the left side and the right side's tubes have separate secondaries coming from the power transformer</li> <li data-xf-list-type="ol">keep both side's wiring symmetrical (mirrored around central axis)</li> </ol><p>[ATTACH=full]28699[/ATTACH]</p><p></p><p>NOTE: in this amplifier the input tube is a 6J5GT (some kits have one input tube; a single dual 6SN7GT)</p><p></p><p>[ATTACH=full]28700[/ATTACH]</p><p></p><p><span style="font-size: 18px">6J5GT</span></p><p></p><p>[ATTACH=full]28701[/ATTACH]</p><p></p><p>You can see the heaters of the 6J5GT are on pins 2 and 7, whereas the heaters of the 6SN7GT are on pins 7 and 8</p><p></p><p>All the power tubes heaters are on pins 2 and 7</p></blockquote><p></p>
[QUOTE="Mars, post: 1147989, member: 817"] Next we connected up the heater circuit. This is quite simple: all tube's heaters are connected in parallel. Three things to take into account: [LIST=1] [*]keep all the heaters in phase ("yellow" goes to same connector on all tubes; and same for "white") [*]the left side and the right side's tubes have separate secondaries coming from the power transformer [*]keep both side's wiring symmetrical (mirrored around central axis) [/LIST] [ATTACH type="full"]28699[/ATTACH] NOTE: in this amplifier the input tube is a 6J5GT (some kits have one input tube; a single dual 6SN7GT) [ATTACH type="full"]28700[/ATTACH] [SIZE=5]6J5GT[/SIZE] [ATTACH type="full"]28701[/ATTACH] You can see the heaters of the 6J5GT are on pins 2 and 7, whereas the heaters of the 6SN7GT are on pins 7 and 8 All the power tubes heaters are on pins 2 and 7 [/QUOTE]
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DIY & Tutorials
DIY, Audio & Video Tutorials
Constructing the Mars Kit 2 Mk 2 tube amplifier kit
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