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I need help on Cary SLP-05 tube roll ...

Hi all,
I'm newly own a SLP-05 and just hunted some NOS 6SN7s:
- 4 matched Sylvania 6SN7GT tall glass
- 2 matched Kenrad NAVY CKR-6SN7GT black glass
- 2 matched Sylvania JAN-CHS-6SN7GT VT-231

Please help me pick 6 out of them for tube position 1-6
(headphone tube 7,8 can stay with stock)
- 1 and 4 are left channel gain buffer
- 2 and 5 are right channel gain buffer
- 3 and 6 are L&R balanced input buffer.
Which buffer is most sensitive to tube roll, gain or input ?
I'll use the unused 2 tubes for my CAD120S driver buffer

Thanks
Thuan
128x128thuan98
6 responses Add your response
ajackson1
156 posts
 
You will need to play around with it and see which sound you like. I tube roll my SLP a lot. Most of the time though, I have Kenrad NAVY CKR-6SN7GT in 3 & 6 and found out that it provides me with good bass and Popes in 1,2,3 & 4. I never change 3 & 6, but roll in diff tubes into the others.

Good luck
thuan98's avatar
thuan98 OP
117 posts
 
Thanks,
I just received response from Gerald Walsh (Cary) confirm this.
Now I need to swap between Kenrad and Sylvania VT-231 in 3&6 to find the best
Regards
Thuan
homosapien's avatar
homosapien
70 posts
 
I got very good result replacing stock tubs with Popes for input buffers. I run my SLP-05 unbalanced.
But most significant improvement I got replacing rectifier tube.
Good luck.
thuan98's avatar
thuan98 OP
117 posts
 
I replaced my rectifier tube with Mullard GZ34 Blackburn along with 6SN7s so I can't tell how much this rectifier tube help tuning.
Thanks
shredder's avatar
shredder
113 posts
 
Homosapien, what improvements did you hear replacing rectifier? What rectifeir did you add?
homosapien's avatar
homosapien
70 posts
 
I replaced stock rectifire tube with Philips Miniwatt metal base - very expensive, but the result is great improvement in all aspects.
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