AudioCircle

Audio/Video Gear and Systems => Tube-o-phile Circle => Topic started by: slefley on 16 Feb 2018, 04:42 pm

Title: Tube substitution question
Post by: slefley on 16 Feb 2018, 04:42 pm

Can I use a RCA UY 227 in place of a RCA 80 rectifier in my low-powered tube amp?  Thank you

Title: Re: Tube substitution question
Post by: JerryM on 16 Feb 2018, 05:08 pm

Have you asked the manufacturer?

Title: Re: Tube substitution question
Post by: JakeJ on 16 Feb 2018, 05:15 pm

I would say no.

See this from the Tube Data Sheet Locator
http://tdsl.duncanamps.com/show.php?des=80 (http://tdsl.duncanamps.com/show.php?des=80)

These are the tubes listed.
CV1708, CV617, UX280, VT80

Title: Re: Tube substitution question
Post by: FullRangeMan on 16 Feb 2018, 05:39 pm

You can not, the filaments and pins are not the same:
227 filament is 2.5V / 1.75A, base 5 pins.
80 filament is 5V / 2A, base 4 pins.

According the subs book 80 identicals are: R80 EX680 UX280 VT-80 KX80 80G 280 RGN380 V580  180 ER80 113A 480 P280 RE-1 CX380 NX280 G-80 PH280 KX-280 110E/59 1560-UX CL-80 C-280 AC80 PM280 PU080 ER280 MX280 X-280 CV1708 V510 VT159-GPO 680 PR280

Title: Re: Tube substitution question
Post by: JakeJ on 16 Feb 2018, 06:24 pm

Wow!  You have a better source than I, FRM.

Title: Re: Tube substitution question
Post by: FullRangeMan on 16 Feb 2018, 06:30 pm

You welcome, old books:
https://www.tubedepot.com/products/tube-substitution-handbook-revised

Title: Re: Tube substitution question
Post by: JakeJ on 17 Feb 2018, 02:36 am

Thanks again, I'll have to procure a copy.  I do have an original RCA RC-10 Receiving Tube Manual and an old Sam's Tube Substitution book but everything is packed for the move.


Oops...it out of print and they have none.  :(

Title: Re: Tube substitution question
Post by: FullRangeMan on 17 Feb 2018, 02:48 am

There are PDF
https://www.google.com.br/search?dcr=0&source=hp&ei=cZeHWp6_LMKZwQSRlLrABA&q=tube+substitution+handbook+pdf&oq=Tube+Substitution+Handbook+&gs_l=psy-ab.1.1.0i22i30k1l2j0i22i10i30k1.1719.1719.0.3968.1.1.0.0.0.0.162.162.0j1.1.0....0...1c.2.64.psy-ab..0.1.162....0.cWQ3oBpDuuo

Title: Re: Tube substitution question
Post by: slefley on 17 Feb 2018, 05:21 pm

Thanks all for the help, Steve