Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on October 08, 2019, 12:09:03 pm

Title: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: kagliostro on October 08, 2019, 12:09:03 pm

At DIYitalia a guy is asking info about the 6j1 chinese tube, but I don't know it at all

https://frank.pocnet.net/sheets/095/6/6J1.pdf (https://frank.pocnet.net/sheets/095/6/6J1.pdf)

and I'm not able to find sure info or to read the chinese datasheet

some guy say it is similar to 6ak5 ......

Someone knows anyting about this tube ?

Thanks

Franco


EDIT: I've find indications about the russian 6J1P is equivalent to the 6ak5 and chinese 6J1 is the same of the russian 6J1P
(but many people say russian tubes are better)

Title: Re: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: Pietro on October 09, 2019, 02:57:27 am

radiomuseum says its similar tot 6ak5 and EF95.

The EF95 is a well known output tube often used in 60's suitcase recordplayers. so low power output pentode basically.

Title: Re: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: kagliostro on October 09, 2019, 06:40:52 am

Many Thanks Pietro

Franco

Title: Re: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: isaac_teller on October 09, 2019, 07:57:12 am

The EF95 is a small signal pentode, not an output tube. The EL95 is an output pentode.
https://frank.pocnet.net/sheets/129/e/EF95.pdf (https://frank.pocnet.net/sheets/129/e/EF95.pdf)
https://frank.pocnet.net/sheets/030/e/EL95.pdf (https://frank.pocnet.net/sheets/030/e/EL95.pdf)

Title: Re: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: kagliostro on October 09, 2019, 09:14:59 am

Yes, I hink Pietro had a little confusion talking about an el95 but the reference to ef95 Is correct


Franco

Title: Re: 6J1 china tube - there is a correspondent tube (USA - european - russian)
Post by: Pietro on October 10, 2019, 02:03:40 pm

chips..
yes offcourse...not an output tube. Indeed confused with EL95 .

what brought that up in my brain? :BangHead: