UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Rogers Ravensbrook series2 amp. Before attempting a capacitor replacement.

thermionic · 2nd Jul 2020, 7:03 pm

As others have said, slightly increasing the values of reservoir and output coupling capacitors will be beneficial to the amplifier.

Even in the early 1970’s, larger value electrolytic capacitors were bulky and expensive, so manufacturers were keen to keep the capacitances to the minimum they could get away with.

Today we are spoilt with the availability of high capacitance, compact components at reasonable prices. However, if you want to keep the amplifier sounding as it would have done originally, then sticking with, or very close to, the original values is the way to go!

Cheers.

SimonT.

2nd Jul 2020, 7:03 pm	#7
thermionic Heptode Join Date: Apr 2003 Location: Cornwall, UK. Posts: 989	Re: Rogers Ravensbrook series2 amp. Before attempting a capacitor replacement. As others have said, slightly increasing the values of reservoir and output coupling capacitors will be beneficial to the amplifier. Even in the early 1970’s, larger value electrolytic capacitors were bulky and expensive, so manufacturers were keen to keep the capacitances to the minimum they could get away with. Today we are spoilt with the availability of high capacitance, compact components at reasonable prices. However, if you want to keep the amplifier sounding as it would have done originally, then sticking with, or very close to, the original values is the way to go! Cheers. SimonT. __________________ The honesty of imperfection..........