Identify Vox capacitors?

[Prairie Dawg]

Can anyone identify how these capacitors are color coded? It's an AC30 with solid state rectifiers.



Here's some eek! stuff.

[Robert M. Martinelli]

Hi,

As to the caps' values, "tropical fish" caps' values are always expressed in picoFarads ( 1x10^-12 F ).

To read the value, starting from the top we have brown=1 - green = 5 - Yellow = 4 ( zeroes ) so the caps' value is 150000 pF ( or 150 nF, or 0.15 uF )

The fourth color from the top gives you the tolerance, in this case black = 20%.

The fifth color is the voltage rating, in this case yellow = 400 V.

The capacitor on the right in the pic is a 47000 pF ( or 47nF, or 0.047 uF ) one ( yellow-violet-orange ), same tolerance and voltage rating.

As to the manufacturer, I can't tell it by looking at the caps, but the amp's PCB layout and construction method makes me think of a "Rose-Morris" era AC30 ( late '70s/early '80s ), this seems to be confirmed by the pots' date codes ( 25th week - 1980 ), and Vox was still using English-made components at that time.

Hope this helps

Best regards

Bob