Obbligato PSU Caps for Cornet (or Chime etc.)

0 Members and 1 Guest are viewing this topic. Read 1697 times.

jameshuls

Obbligato PSU Caps for Cornet (or Chime etc.)
« on: 2 Dec 2008, 05:54 pm »
I just picked up some Obbligato PSU film caps (http://www.diyhifisupply.com/?q=catalog/34/obbligato_psu_caps) to replace the 47 uF 450V electrolytics in my Cornet (once I get it working - see my other post). Has anyone had a chance to try them?

It would be an interesting project to compare these with Mundorf M-Tube Caps (at twice the price), Jensen electrolytics Radial Dual, ASC X386s OIMPs and Solen/Axon Fast Caps (all about the same as the obbligatos).

Any other intersting potentials out there? I suppose the sky is the limit if you start mixing up appropriately capacitive batches in series...

tubesforever

  • Full Member
  • Posts: 441
Re: Obbligato PSU Caps for Cornet (or Chime etc.)
« Reply #1 on: 3 Dec 2008, 07:43 am »
James these look interesting. 

I think there is more going on with B+ elecrolytics than some think.  These Obligattos are much cheaper than the Motor Run caps I have been looking over.  Their size is a big pain! 

Can you take some pictures of yours when they are mounted so I can see how they fit on the board.

Thanks for this post.  I think this is a viable option for the Hagermans.  I wonder if I would find the need  for teflons with these in the B+ supply.

Cheers!

jameshuls

Re: Obbligato PSU Caps for Cornet (or Chime etc.)
« Reply #2 on: 3 Dec 2008, 03:15 pm »
Yes, they are big! I was a little shocked when I unpacked them. However, it has led me down an interesting build path for the chassis as it will be a complete one-off fabrication using copper, brass and exotic woods. I am also taking an engineering approach to resonance control, not by isolation, but by draining the resonance from the unit using naval brass spikes connected to the copper sheet top plate and replacing the plastic standoffs from there to the circuit board with brass tubing. A structure comprised of copper bar connected to the toplate will be used to hold the capacitors. This whole structure (brass spikes, top plate, circuit board and capacitor mount) will be self contained (i.e. - not directly connected to the chassis) and easily lifted from the chassis for easy access. It is sounds complicated, but months of obsessive research and brainstorming has led me to this design and it should be worth the effort! At the very least it will look cool - even my wife is excited about it! aa