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bad silkscreen
Vintage dave (talk | contribs) (Specs and circuitry) |
Vintage dave (talk | contribs) (bad silkscreen) |
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These two tube types have different heater currents, and because the heaters are | These two tube types have different heater currents, and because the heaters are | ||
series-wired, you cannot switch from one type to the other without circuit modification. | series-wired, you cannot switch from one type to the other without circuit modification. | ||
At least some instruments after S/N 3462 (using 12AU7) were built with old stock of chassis marked "5814" and "53D/54D". | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||