RAAL DTD tweeter

[ALEXZ]

Hello,
does anyone use RAAL DTD in a parafeed configuration with 300b or 2a3 SET ?  There very little DTD transformers  data available, from what I've got from Aleks they are 3k, gapped for ~80ma, so designed to use as "traditional" anode transformers ... Any recommendations are very welcomed.  Thank you.

 

[Paul Birkeland]

When I got my Raal ribbons, they were supposed to have the gapped amorphous 3K transformers, but when I attempted to hook them up this way, the results were very poor.  In retrospect, I think they ended up sending me the first generation drivers.

 

[ALEXZ]

Strange, are they marked DTD ?  You probably can measure transformer, DTD should be 175:1,
regular 8 ohm something like  9:1