Description
EL12 spez Telefunken Germany tube power tubes valve amplifier ela V300 Klangfilm both tubes with gold pins coated glass big tray getter bottom black base with top cap EL12 spezial near NOS fully tested strong emission 34mA & 26mA(good at 19mA) with 200 volt on anode on Funke tube tester calibrated Telefunken Germany original big diamond front logo code on base , tube 1 = 663 , tube 2 = 0998 2 tubes = pair = two pieces = 2 valves VACUUM PENTODE POWER OUTPUT LAST STAGE AUDIO EL12 spez = EL12 sp Similar tube Other base and data slightly different: EL12N Multiple differences or of other kind: EL12 First serie 1939 Tube leaflet collection E.Erb Analysis by original leaflets (T8) Socket German Steel Y8A Top contact with a cap Filament heater Vf 6.3 Volt / If 1.2 Ampere / Indirect / Parallel, ~ = (AC/DC) Description Launched 1938 by Telefunken. Predecessors / Vorgänger: AL5; Successors / Nachfolger:~EL34 18 W power output pentode with almost twice the sensitivity as the AL5, intended for applications designed for normal output pentodes as the EL11, but where twice the output power is desired. A suffix /xxx indicates the max. voltage this tube is especially selected for, otherwise it's 250 V. The EL12 spez. has a plate top cap. The EL6 is a parallel type with P base. box 207