Manley Chinook Owners Tube Rolling


Just bought a Chinook M2 SE  From Upscale Has anyone tried other tubes besides the 6922 Tungstran i think that Kevin picked out. Would it even make a difference?
Thanks, Mike
fruitloopsr
Apparently the Chinook uses two 6922s per channel. If that’s not correct, stop reading this, because I don’t want to mislead you. If it is correct then you would mess around with the tubes closest to the centerline of the chassis. That’s if it’s constructed like my Steelheadwhich seems a reasonable bet. OR ask Manley which of the two tubes in each channel is part of the gain circuit. They’re cool.

As to SLN tubes, who could argue against the idea? Problem is that the SLN characteristic is transitory. And there’s no telling how long it will be before any given tube will go noisy. Also, in the particular case of the Chinook the single gain tube is part of a hybrid cascode where the bottom element is a FET. In such a topology the noise characteristic of the tube section is less crucial to output noise,partly because the tube per se does less work on gain. Not that it still isn’t a good idea to use a low noise tube.
which of the 4 tubes in the chinook are the "Gain" tubes,can someone that knows, let me know?
Thanks
call into upscale or into manley directly... eva anne will tell you for sure...
try the amperex Holland bottles, and better than any tube rolling is getting rid of those .47uf wima caps in the SS stage. replace em with .47 film and foil Nichicons.  you will be shocked at how much the Chinook opens up.