Hello,
I bought an old Ampro 730 tape machine in a garage sale for $15.
The mechanical transport of the unit is in a very bad condition as well as the magnetic head.
So I want to use the electronic parts to build a tube mic preamp.
The power transformer and the choke seems to be in good condition and it got's enough amps to run a 6X4, 6AQ5, 6AU6 and a 12AX7 tubes.
Any suggestions for a mic pre with a 6X4 rectifire and 6AU6 and 12AX7 preamp stages?
(I don't think to use the 6AQ5 for a mic pre).
After finding the schematic for this project I'll buy the right input / output transformers and new caps.
I bought an old Ampro 730 tape machine in a garage sale for $15.
The mechanical transport of the unit is in a very bad condition as well as the magnetic head.
So I want to use the electronic parts to build a tube mic preamp.
The power transformer and the choke seems to be in good condition and it got's enough amps to run a 6X4, 6AQ5, 6AU6 and a 12AX7 tubes.
Any suggestions for a mic pre with a 6X4 rectifire and 6AU6 and 12AX7 preamp stages?
(I don't think to use the 6AQ5 for a mic pre).
After finding the schematic for this project I'll buy the right input / output transformers and new caps.