Motor run caps for the Get Set Go

[moonbird]

Hello all -

I am getting ready to order this board and build the Get*Set*Go amp. However, as I collect parts I am wondering if a Oil filled motor run type capacitor would be worth it for this amp. I have never used one before. From what I read the motor run cap should only be used as the 'last' capacitor in the power supply. This is the part that confuses me. Does this mean that the positive effects are only present for on the last PS tap - in this case for the preamp tube. Could such a cap be wired to the board without problems? Any suggestions you can offer w2ould be much appreciated. thx.

[Ty_Bower]

If you choose to use a motor run cap in your GetSetGo, it should be placed at C9, where the B+ is taken off for the finals. Be certain the cap is a motor run type, and not a motor start.

Oh, and welcome to diytube!

[moonbird]

Ty --

Thanks for the reply. What is the benefit of using a motor run tube in your opinion? Is it worth the trouble (space)? thx again.

[Ty_Bower]

I think the motor runs are supposed to have a very low ESR, or something like that. I can't honestly say for myself - I've never used a motor run in one of my amps. I've read that modern electrolytic caps are actually rather good.

I'm sure someone else can add a comment or two about motor runs.