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Vintage threads from the first ten years

previous: John Stokes You certainly can buy matched pairs... -- 9/16/1999 8:24 PM	View Thread

Re: MB Mark IV Power Tubes

9/17/1999 4:20 PM
Doc	Re: MB Mark IV Power Tubes All we have to do is measure the plate, screen, and grid bias voltages, and the idling current for a set of mesa sanctioned tubes in various mesaboogie amps, then we'd know what parameters are required to be matched in the tube suppliers' tube test rig. A few suppliers match power tubes at realistic circuit operating voltages for a guitar amp anyway. If we could get them to adjust the voltages accordingly, they could supply the tonemongers with really good plug-ins for mesa amps. Same deal with GT's. How about a general correlation in ratings of transconductance and plate current (as labeled on tested matched tubes) with the typical 1-10 /soft-hard GT rating? No patent infringements here.

9/17/1999 4:20 PM

Doc

Re: MB Mark IV Power Tubes

All we have to do is measure the plate, screen, and grid bias voltages, and the idling current for a set of mesa sanctioned tubes in various mesaboogie amps, then we'd know what parameters are required to be matched in the tube suppliers' tube test rig. A few suppliers match power tubes at realistic circuit operating voltages for a guitar amp anyway. If we could get them to adjust the voltages accordingly, they could supply the tonemongers with really good plug-ins for mesa amps. Same deal with GT's. How about a general correlation in ratings of transconductance and plate current (as labeled on tested matched tubes) with the typical 1-10 /soft-hard GT rating? No patent infringements here.