Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Saransk on December 16, 2017, 12:11:49 pm

Title: Information on AC line filter installed in amp
Post by: Saransk on December 16, 2017, 12:11:49 pm

Opened up a Risson amp from his post Rickenbacker days and found a Self-contained AC line filter installed
Cornell Dubilier NF 20894
2 x 3 Amp
About a 3" x 3" covered (sealed?) aluminum box
Has a round socket for the AC cord and an Accessory Outlet

Cannot find any information for this vintage part.
Any idea as to where I can find information on this.

thanks
Mike

Title: Re: Information on AC line filter installed in amp
Post by: kagliostro on December 16, 2017, 12:24:18 pm

Try to ask here

http://www.cde.com/why-cde/overview (http://www.cde.com/why-cde/overview)

http://www.cde.com/product-support (http://www.cde.com/product-support)

http://www.cde.com/why-cde/history (http://www.cde.com/why-cde/history)

Franco

Title: Re: Information on AC line filter installed in amp
Post by: mresistor on December 17, 2017, 06:17:45 pm

NF most likely means "Noise Filter".   


You could try contacting Mr. Rissi at Risson Amplifier and ask for information on it..


http://www.rissonamplifiers.com/