Paradise Builders

Without being an expert, I think the problem can be around Q11,12,15,16 and
Q4,5,13,14 since it is after the inputstage and right before the riia.
So do you have a suggestion to where to put some caps in those two clusters.
I am blank:eek:
 

Attachments

  • Paradise R3 schematic amplifier annotated[1].pdf
    25.4 KB · Views: 207
I´m going to order the parts for the Paraise. At the opportunity I want also order the capacity for the PSU.
Is this PSU good enoguht?
BLANK PROTOTYPING Power Regulator Board PSU PCB BOARD fr TUBE POWER AMPLIFIER | eBay

of course with ultra fast diodes and Caps Panasonic TSHA.

Or it is planned an own PSU "Paraise"?
What Trasformers I need?

Norbert

That will work fine. But... it would be nice to see some snubbers on those diodes, and to see a few 10ohm (or so) resistors between those big caps.
 
I´m going to order the parts for the Paraise. At the opportunity I want also order the capacity for the PSU.
Is this PSU good enoguht?
BLANK PROTOTYPING Power Regulator Board PSU PCB BOARD fr TUBE POWER AMPLIFIER | eBay

of course with ultra fast diodes and Caps Panasonic TSHA.

Or it is planned an own PSU "Paraise"?
What Trasformers I need?

Norbert

Ooops, missed the transformer question, got to http://www.diyaudio.com/forums/analogue-source/154210-mpp-713.html#post3146769 #7127 and check it out :)
 
I am now running my boards without the servo opamps, and it seems to solve my oscillation problem, now the offset is very stable but very high too:eek:
Could it be, that the opamps are not fast enough, or maybe in need of some bypass caps?
I have tried AD711 instead with same bad result.:confused: