Transformer for record cutting head

[EdKozk2]

Hi Tom,
There was a magnetic cutting head produced that could be substituted for your crystal one. The the current 7000 ohm primary/ 70,000 ohm secondary impedance transformer can be switched to a standard 7000 ohm / 4 ohm transformer. The magnetic cutting head was Astatic M-41-3. The replacement transformer for the change over was Stancor A-3854 or A-3859.
My wife and picked up one of these Recordio's in January. I just recapped mine last month. I had to change the phono cartridge. The crystal cutter and transformer were both shot. The secondary of the transformer was open. I installed a standard speaker transformer for a 6V6 load (5000 ohm) to 4 ohm speaker. My Recordio uses the 6SN7 to drive the cutter. I ended up building a DIY magnetic cutter. It works well enough to at least record on plastic disks. The frequency response is limited, very weak on the high frequency end.
Ed