Our LEBEN CS300F integrated amplifier uses GE JAN6197 tubes in the output stage.
I've got hold of some RCA 6CL6 tubes in the hope that I can drop them in when the time comes.
Doing a quick double-check, I noticed some small differences between the two tubes.
On their respective datasheets, the main difference I have spotted is:
6CL6 has a much higher PLATE RESISTANCE specification.
[6CL6 ra=0.15megOhm versus 6197 ra=0.09megOhm]
My thinking is that because the LEBEN has been designed around the lower maximum plate resistance of the 6197, the 6CL6 should pose no problems - replacing the 6197 - in this regard.
One remaining outstanding question is:
Do the two tubes share the same level of Gain?
I have been unable to find this info.
Can I ask the more experienced members here to look these questions over and comment please? Appreciated.
[Photo below shows original GE JAN6197 together with the 17EW8 HIFI preamp tube...]
I've got hold of some RCA 6CL6 tubes in the hope that I can drop them in when the time comes.
Doing a quick double-check, I noticed some small differences between the two tubes.
On their respective datasheets, the main difference I have spotted is:
6CL6 has a much higher PLATE RESISTANCE specification.
[6CL6 ra=0.15megOhm versus 6197 ra=0.09megOhm]
My thinking is that because the LEBEN has been designed around the lower maximum plate resistance of the 6197, the 6CL6 should pose no problems - replacing the 6197 - in this regard.
One remaining outstanding question is:
Do the two tubes share the same level of Gain?
I have been unable to find this info.
Can I ask the more experienced members here to look these questions over and comment please? Appreciated.
[Photo below shows original GE JAN6197 together with the 17EW8 HIFI preamp tube...]
The 0.15 MOhm of the 6CL6 is approximate for sure. The 6197 was a military tube and probably it was specified a bit more rigorously. The only real difference I see is the heater. The 6197 has a pure tungsten heater to survive long periods of cut-off which do not happen in normal Hi-Fi amps. By the way, the 6XXX equivalent of the 6CL6 is the 6677.