Tube Amps / Music Electronics
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|6/14/2000 12:07 AM|
||Hard to describe,PI paralel triode.|
After re reading the post about the paralel triodes,i tghought of something,first i would make a kind of phase inverter,with variable phase angle,plate normal output going to the first grid of the paralel triode,
and the second output out of phase with the second,of0 to 179°,tuneable by a pot,going to the grid of the second paraleled triode.
I thought of this after reading the part about thickening effect on the sound,due to the slightly different characteristics of the tubes.A circuit like described would affect the tone drasticaly?Like the harmonic content.
If anybody is willing to participate,you're welcome.
I have a concern,bout the variable de phasing effect,i don't know how to do this.
|6/14/2000 12:12 AM|
Hi again,and sorry!
I made a mistake there"and the second output out of phase with the second,of 0 to 179°,tuneable by a pot,going to the grid of the second paraleled triode."
I should have said first.
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|6/14/2000 11:18 PM|
Hmmm... a fixed (once set) phase shift in degrees that doesn't change with frequency....
|6/14/2000 11:41 PM|
Don"Hmmm... a fixed (once set) phase shift in degrees that doesn't change with frequency...."
You thought of a phaser?If the change is slight along the freq scale it would be ok,but not like a phaser,that would be too much!Five or ten degrees would be acceptable.
I think the dephasing in regard of the first output,would be best made with a delay?
|6/14/2000 11:43 PM|
I'll try with the delay in paralel on my bassman.It's good to have two inputs sometimes.
|6/15/2000 10:23 PM|
Using delay will create a variable phase shift with respect to frequency.
|6/16/2000 2:03 AM|
I haven't read it in a while, but
may have a DSP approach to phase shift.
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