gibosi
Headphoneus Supremus
- Joined
- Oct 18, 2012
- Posts
- 6,431
- Likes
- 4,834
Ding, ding ding! We have a winner!! Thanks. That's was the photo I sought.
But keep in mind, they are all the same. Except for the fact that they were manufactured at different times, they were all manufactured in the very same factory.
And I'm sure you will be happy with any of them, so my advice is go for the best deal.
The staggered plates and side getter suggest a Cossor 53KU but I may be wrong. What is the height?
"Introduced in 1948, this octal based indirectly heated full wave rectifier in which the reservoir capacitor should never exceed 16μF and to avoid peak current spikes and minimum load series resistance of at least 75 Ohms is recommended. Let's start with the exquisite electrode structure which has a beautiful staggered parallelogram twin anode cage. Each anode within the cage is pressed to shape and stitched together enclosing the anode support rod. The top mica shows the oval cathodes and a sequence of insulated heater wires that pass the length of the cathode four times. To the rear of the staggered cages we have the elegant swan neck getter plate all contained within a gorgeous full baluster envelope – it looks like no other rectifier and so my ears sounds like no other too. The envelope rides on a beautiful curved micanol base ala KT66. The classic envelope is 56 mm in diameter, and excluding the IO base pins is 122 mm tall."
Also see: https://www.radiomuseum.org/tubes/tube_cv378.html
To my eyes, it's a Cossor 53KU, the "original" CV378.