2. amps-preamps
  3. 166040-4741

Cary SLP-98L tube question

Hi, all.

Here's my question:  What is a buffer cathode follower, and where are these tubes located (front by control or toward the back)?
What is a line stage, and where are these tubes located (front or back)?

And lastly, where should better quality tubes go if I only have two upgraded tubes to use?

Thanks, and stay safe.
128x128audiodwebe
3 responses Add your response
audiodwebe's avatar
audiodwebe OP
241 posts
 
Thank you.
jasonbourne52's avatar
jasonbourne52
2,863 posts
 
"In the cathode follower you use the voltage swing across a resistor between ground and the cathode. This voltage swing will be roughly the same as the grid, but the current swing will be greater."  This gives a low impedance drive for the output (last) stage of a preamp. The two back tubes are likely cathode followers. No need to put upgraded tubes there! Use new tubes in the first (voltage gain) position.
jond's avatar
jond
5,796 posts
 
A line stage is a preamp without a phono stage. If you have a 98L which is a line stage there are just 4 tubes all 6SN7's.  If you only have two upgraded tubes try them in the front two positions then the back two and pick which sounds better.
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