Recapping Peavey AMR PSU

[Nele]

Hi,

A few months ago I bought a Peavey AMR 1600 console. It needed some minor work and the desk itself is now fully functional. The only thing I still need to do is recap the power supply.
My version has a lot of axial caps in parallel per power line. For instance: for the +19V it uses 8 x 2200uF. Can I replace this with 4 x 4700uF Panasonic NHG caps, of 2 x 10.000, or should I worry about ESR and keep this as low as possible?

Thanks!

 

[JohnRoberts]

Hi,

A few months ago I bought a Peavey AMR 1600 console. It needed some minor work and the desk itself is now fully functional. The only thing I still need to do is recap the power supply.
My version has a lot of axial caps in parallel per power line. For instance: for the +19V it uses 8 x 2200uF. Can I replace this with 4 x 4700uF Panasonic NHG caps, of 2 x 10.000, or should I worry about ESR and keep this as low as possible?

Thanks!

Do what floats your boat...

The use of 8x2,200uf  was probably because they were common parts in the system and machine inserted. So it was cheaper to use 8X of a high volume component being purchased in tens of thousands a month vs using 2 larger caps that are only used tens a month and then hand inserted which is also more expensive.

The smaller parts in parallel certainly work as good or better than the fewer larger caps. 

Be sure that the larger caps fit in the package and are mechanically robust (not a concern if you don't ship the PS).

Farads are farads...

JR

 

[Nele]

Thank you very much John. And thank you very much for designing a nice console!!! If you pm your address I'll send you some fresh roasted coffee from a small roaster here n Groningen..  8)

 

[JohnRoberts]

Thank you very much John. And thank you very much for designing a nice console!!! If you pm your address I'll send you some fresh roasted coffee from a small roaster here n Groningen..  8)

Thanks for the gracious offer, but it wouldn't still be fresh by the time it got here.  :'(

I just roasted a half pound of coffee (green beans from Cameroon)  this morning... Stopped the roast right at the beginning of the second crack. (coffee beans crack a little like popcorn popping, but there are two cracks, one at lower temp, and one later after the bean is dried out and hotter.)

We had some dutch workmen helping build our booth for the musik messe trade show in frankfurt (years ago). They shared some of their coffee that they brought from home with us and it was better than the German coffee. At least better than the German coffee I was served.

JR