Neve Line In

new stuff, V T B 9046

pics on the way,

inductance chart,

looks like hi perm lams for a line input, wtf, over?  this thing wants 50/50 me thinks,

gotta check saturation,

reverse dissection is in progress, parts is parts,

laminated, old school brass, non magnetic, does not have the weird core clip like the st ives, that would be a pain to have made,

don't want to clamp the core too tight, as it expands and contracts,  of you limit this movement, distortion takes place,

"Magnetostriction (cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization. The variation of materials' magnetization due to the applied magnetic field changes the magnetostrictive strain until reaching its saturation value, λ. The effect was first identified in 1842 by James Joule when observing a sample of iron.

This effect causes energy loss due to frictional heating in susceptible ferromagnetic cores. The effect is also responsible for the low-pitched humming sound that can be heard coming from transformers."

there was some masking tape holding the core together, so we upgraded to some glass tape,

those thin brass plates are so you do not put too much pressure on the core,

going directly from coil to term plate,

bolt the side on and pour some wax or other potting compound, St Ives/Maranair used a  wax that stayed soft at room temp as to not restrict the lams,

Badass

thanks!

a side note, connecting pin 6 - shields to pri signal ground will shift the resonant peak downward, but improves square wave ringing,