Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: SK What causes "compression" IYO? (E) -- 6/26/2003 6:06 PM View Thread

Re: What causes "compression" IYO? (E)

6/26/2003 10:03 PM
Jeff G.
Re: What causes "compression" IYO? (E)
I would lean most toward the availability of magnetic flux or energy theory. If I understand tube compression correctly, it's related to the ability of the cathode to supply free electons to the plate (anode). When you "saturate" the tube, so to speak, by reaching and surpassing this capability, the tube distorts or "compresses." It's the way that happens in tubes that we all love so much.  
I'm sure there's a lot more to it, but I think that's the gist. I would think the corollary to magnetic strength/flux/energy ... whatever ... is not a far stretch with respect to pickups. Not that other things can't or don't contribute.  
I'm pretty new to all of this, but the difference in compression characteristics between A2 and A5 pickups wound to approximately the same DC specs and balance is more than noticeable, to me, with A2 compressing much more than A5 given the same input parameters.