Almarg, I’d be curious to hear your thoughts on this? Thanks!
Carver and Tube Life
I’ve been looking at Bob Carver’s statement tube amps, the Siver Seven 700’s. These massive tube amps designed by Bob have been around for years and the latest version of his 700’s can now accommodate KT120 output tubes and his best output transformer design.
EACH mono block uses 20 KT120’s! That’s 40 KT120’s total when it comes time to ‘re-tube.’ However, according to his description these KT120’s should easily last “50 Years”. Is that truly possible??? Can the output tubes really last that long ?
EACH mono block uses 20 KT120’s! That’s 40 KT120’s total when it comes time to ‘re-tube.’ However, according to his description these KT120’s should easily last “50 Years”. Is that truly possible??? Can the output tubes really last that long ?
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Hi Stickman, Thanks for your question. It so happens that I had addressed that exact question in a post dated 11-17-2017 in this thread, although in connection with a different Carver amplifier. What I said was as follows: Regarding the statement by Mr. Carver about the 50+ year longevity of the power tubes in his amplifier, I would point out that in general there are statistical approaches that are commonly used in deriving published MTBF (mean time between failure) specifications which produce misleading results. Best regards, -- Al |
- 16 posts total