capacitor voltages

[mlhuff]

I am new to this and I am looking at a kit. Well not a kit per se, I am going to buy the parts from a list. There are capacitors that have a value and voltage rating and some only have a capacitance value. What kind of voltages should I look for say in a coupling or tone capacitor?

Thank you for the help

[ALBATROS1234]

coupling caps are usually 600volts.  for film caps like that i usually just get 600volts. as far as filter electrolytics usually 450 to 500volts is standard. for bypass caps (generally electrolytics) you can get by with 25 to 50volts. generally the schematic or spec for the amp will specify the values. if there is a specific question about something post a schematic and someone can help.

[Willabe]

I am new to this and I am looking at a kit. Well not a kit per se, I am going to buy the parts from a list.

........ if there is a specific question about something post a schematic and someone can help.

Yes, do you have a schematic for the amp that you can post here?

[PRR]

You are 97% safe buying caps rated higher than the highest voltage in an amp.

Guitar-amps range from 6V to 600V.

A 600V amp has caps in places which never see over 3V.

Since Voltage is related to Price, also physical size, you don't want to over-volt recklessly.

Small (pFd) caps *used* to only be available down to 500V, because if they made them any lower-V they would be too small to handle. BUT iPods and Cellphones have made too-small-to-see a virtue, and pFd caps now go down to 50V even 5V.

So It Depends.

[jjasilli]

Ditto, e.g.: some tone stacks are fed by a coupling cap, so they see no hi DC voltage.  Other amps put no coupling cap before the tonestack, so the tonestack caps get full B+ preamp voltage.