Goldie99
Super Member
ca. = circa = approximately
The schematic 'centre' voltage is 26.2V, but it's not critical, just a good indicator that the amp is fairly well balanced in terms of DC voltage.
The idle current is much more important - that one I'd adjust accurately, and check / tweak it over about an hour or so, until it settles to about 25mV across R35 (23.5mV if your R35 is now 0.47R) - it'll vary as the temperature equilibrates.
The schematic 'centre' voltage is 26.2V, but it's not critical, just a good indicator that the amp is fairly well balanced in terms of DC voltage.
The idle current is much more important - that one I'd adjust accurately, and check / tweak it over about an hour or so, until it settles to about 25mV across R35 (23.5mV if your R35 is now 0.47R) - it'll vary as the temperature equilibrates.