Rajtko kindly sent some pictures of his D3a collection and C3g valves:
D3a stock (nice one :)):
a two-mica newer Siemens C3g:
and finally a NOS Telefunken triple-mica C3g:
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Author: Ale Moglia
"A mistake is always forgivable, rarely excusable and always unacceptable. " (Robert Fripp)
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One thought on “D3a and C3g collection”
Nice pictures Ale :-))
Brief comments about my small D3a collection.
Technologically, D3a is best made small signal tubes I’ve ever seen. Really perfect done.
Philips D3A-SQ, black coated anode with shiny edges and two getter suports. Best sounding D3a to my taste.
LM-Ericsson is quite different D3a. Complete internal structure is shifted to the center of the glass and with small tile down between pin wires. This tile provides better cooling for G2, I think. If you need more distinct highs from your speakers, go with this D3a.
Siemens D3a, grey anode, two getter suports.
Siemens and Halske D3a, black coated anode, one getter suport.
…….
and finally a NOS Telefunken triple-mica C3g:
Nice pictures Ale :-))
Brief comments about my small D3a collection.
Technologically, D3a is best made small signal tubes I’ve ever seen. Really perfect done.
Philips D3A-SQ, black coated anode with shiny edges and two getter suports. Best sounding D3a to my taste.
LM-Ericsson is quite different D3a. Complete internal structure is shifted to the center of the glass and with small tile down between pin wires. This tile provides better cooling for G2, I think. If you need more distinct highs from your speakers, go with this D3a.
Siemens D3a, grey anode, two getter suports.
Siemens and Halske D3a, black coated anode, one getter suport.
…….
Something about my very favorite C3g…..later…
Best diying,
Rajko