Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: kagliostro on April 24, 2013, 09:48:25 am

Title: EF86 - Here a comparision reference table between different schematics
Post by: kagliostro on April 24, 2013, 09:48:25 am

A comparision table of some ef86 arrangements

K

Title: Re: EF86 - Here a comparision reference table between different schematics
Post by: Davidg on April 28, 2013, 05:27:32 am

Thanks kagliostro ! I found a few of these NOS cheap awhile back and got a few to try out in the future.This table willl be a big help.

Title: Re: EF86 - Here a comparision reference table between different schematics
Post by: kagliostro on April 28, 2013, 05:53:47 am

Consider that in old amp the ef86 settings (as V1) were hot

so the tube can more easily result microphonic

lowering values sometime is a good idea

consider also to use dampen rings on the tube and/or a dampen socket

K