[Dan Metro]

I am restoring a 41-265 console and I have a defective OPT with a shorted primary to secondary (all leads disconnected). The Hammond 125ASE looks like a likely replacement being 2500-10K primary with a 4 ohm connected secondary and physically is almost the same size as original. Is this a good choice for a single ended type 41 tube or is there a better choice?

[John R]

Dan,
Yes, the Hammond 125ASE will work fine for your 41-265. The 125ASE is rated at 25ma/3 watts. The 41 tube at a plate voltage of 200 volts has an output impedance of about 9K. Therefore, the 10K tap will work well. The 41-265 with a approximate Plate voltage above will have a max. output of about 2-2.5 watts. If you want more headroom you can always go with the 125BSE but probably not needed. John

[Dan Metro]

John,

Thanks for the reply. The 125BSE is physically too large to fit under the chassis but would fit above it as there is a lot of room there. To keep the cost down I will order the 125ASE. Thanks again for your input. Dan