Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on January 16, 2016, 09:21:40 am

Title: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: kagliostro on January 16, 2016, 09:21:40 am

Is the 6N6P (6Н6П), as some vendor says, really an (electrically) equivalent tube of the ECC99

6N6P (6Н6П) datasheet

http://tdsl.duncanamps.com/link.php?target=042560C3 (http://tdsl.duncanamps.com/link.php?target=042560C3)

http://www.mif.pg.gda.pl/homepages/frank/sheets/113/6/6N6P.pdf (http://www.mif.pg.gda.pl/homepages/frank/sheets/113/6/6N6P.pdf)

http://oldradio.qrz.ru/tubes/russian/detail/6n6p_2.shtml (http://oldradio.qrz.ru/tubes/russian/detail/6n6p_2.shtml)

Here the - I version of the tube (6N6PI (6Н6П-N)

http://www.mif.pg.gda.pl/homepages/frank/sheets/113/6/6N6PI.pdf (http://www.mif.pg.gda.pl/homepages/frank/sheets/113/6/6N6PI.pdf)

ECC99 datasheet

http://www.mif.pg.gda.pl/homepages/frank/sheets/163/e/ECC899.pdf (http://www.mif.pg.gda.pl/homepages/frank/sheets/163/e/ECC899.pdf)

Thanks

Franco

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: drgonzonm on January 18, 2016, 05:04:19 pm

Franco,

I love your strange finds, they put smiles on my face, as look over your posts  :headbang:

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: HotBluePlates on January 18, 2016, 06:56:03 pm

Quote from: kagliostro on January 16, 2016, 09:21:40 am

Is the 6N6P (6Н6П), as some vendor says, really an (electrically) equivalent tube of the ECC99 ...

The Russian data sheet for the 6N6P claims a little more Gm, a little less rp for the same operating point as the JJ ECC99.

The 6N6P heater uses only pins 4 & 5; pin 9 is an internal shield. The data sheet says 6.3v heater only.

The JJ ECC99 uses pin 9 as a center-tap for the heater, and can accept 6.3v (2 heater sections in parallel) or 12.6v (2 heater sections in series).

So similar, but different. I haven't personally tried either tube.

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: kagliostro on January 19, 2016, 02:09:53 am

Thanks HotBluePlates

So, if the filament voltage is the major difference, in a small amp with filament circuit properly adapted I think the 6N6P can be used as power tube in place of ECC99

(a friend told me that there may be a chance to have some it at a good price, I'll try to take it)

Thanks again

Franco

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: jazbo8 on January 19, 2016, 02:17:26 am

Quote from: kagliostro on January 19, 2016, 02:09:53 am

I think the 6N6P can be used as power tube in place of ECC99

for a mini-amp perhaps... :icon_biggrin:

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: kagliostro on January 19, 2016, 05:10:43 pm

There is a recent post about a small amp that uses ECC99

http://el34world.com/Forum/index.php?topic=19680.0 (http://el34world.com/Forum/index.php?topic=19680.0)

 :angel

Franco

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: Bluemeany on January 25, 2016, 01:42:08 pm

Quote from: kagliostro on January 19, 2016, 05:10:43 pm

There is a recent post about a small amp that uses ECC99

http://el34world.com/Forum/index.php?topic=19680.0 (http://el34world.com/Forum/index.php?topic=19680.0)

 :angel

Franco

Hi again Kagliostro, when I designed that amp the 6N6P was in my mind and should work fine - the reason I spec the ECC99 is the heater arrangement mentioned above and simplicity in set up that it allows (I use 12v6 heaters in most of my builds).

Title: Re: 6N6P (6Н6П) is really an (electrically) equivalent tube of the ECC99 ?
Post by: kagliostro on January 25, 2016, 03:54:12 pm

Thanks for the info

Franco