• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

OPT test data?

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
There's a PDF document out there somewhere from a well known audio enthusiast. It documents measured performance data from a variety of well known output transformers. The author categorized their performance (A, B, C, etc.) depending how well each test subject fit profile A, etc. He also noted the -3dB point at one or both ends of the audio spectrum. The last few pages of the document had images of typical "A" transformers, "B", etc.

Does anyone recall the link to the document I referencing? I can't seem to find it now...
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.