higher/lower pf V2 snubber values - what's the effect?

[markmalin]

Just curious what the effect would be of raising the values of the V2 snubbers vs lower values. What would I expect to hear? I raised mine from 270pf to 330pf and recorded cilps with each value, but am having a hard time quantifying the difference because my recording technique is pretty rudamentary (to say the least) and the mic position may have changed between the two recordings.

Thanks,
mark.

[odourboy]

Well the difference is pretty subtle. I'm not surprised you're having trouble telling the difference without a well controlled environement.

The 330s will provide slightly more treble bleed than the 270s. Here's a simulation plot of the response curve of each. The lower curve is the 330pF snubbers.

[markmalin]

Well the difference is pretty subtle. I'm not surprised you're having trouble telling the difference without a well controlled environement.

The 330s will provide slightly more treble bleed than the 270s. Here's a simulation plot of the response curve of each. The lower curve is the 330pF snubbers.

Thanks for the plots!
So when you say trebble bleed, it is bleeding trebble across the plate -> cathode and being filtered it out of the signal (i.e. that is what causes less trebble to the output - and to the ear)?

Mark.

[dogears]

The snubbers go from plate to cathode which is at ground.

[Stanz]

It (higher cap value) is bleeding treble from the signal.

Higher cap value = less treble.

Odourboy's graph shows the 330pf cap as being lower than the 270pf.

[markmalin]

It (higher cap value) is bleeding treble from the signal.

Higher cap value = less treble.

Odourboy's graph shows the 330pf cap as being lower than the 270pf.

Got it. Thanks, guys.

Mark.