19-04-2018, 07:19 PM
I saw Argus25's monitor photo and thought it might be interesting to see how the low frequency response bars below the circle compared with our Test Card C letter box.
https://www.vintage-radio.net/forum/atta...tid=161217&d=1523882447
(with non-graded vertical bar)
The horizontal bars appear to be more effective and cause my little Sony 9-90 to drag its lines. I have seen this in the past with the 9-90 but not when its displaying Test Card C.
Test Card C is also fairly forgiving regarding corner focus but the Indian Head really shows up the poor focus of the old 6/6 anywhere near the rim.
Peter
https://www.vintage-radio.net/forum/atta...tid=161217&d=1523882447
(with non-graded vertical bar)
The horizontal bars appear to be more effective and cause my little Sony 9-90 to drag its lines. I have seen this in the past with the 9-90 but not when its displaying Test Card C.
Test Card C is also fairly forgiving regarding corner focus but the Indian Head really shows up the poor focus of the old 6/6 anywhere near the rim.
Peter
