Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: DummyLoad on January 23, 2013, 06:00:13 pm

Title: Top Gun Toobz.
Post by: DummyLoad on January 23, 2013, 06:00:13 pm

interesting little pentode. 6216 - surfing frank's electron tube pages ran across this (http://scottbecker.net/tube/sheets/127/6/6216.pdf) beam pentode.

excerpt from datasheet:

...it is extremely resistant to the vibrations encountered in present high-speed military aircraft.

works for me; so must be roadie proof then huh? i think not; nothing is roadie-proof. in fact, shit should built out of ground up roadie. bulletproof. i'd call it roadeite.

the screen looks lame but something could be worked up with a CT FWB or a FW delon doubler. push-pull class A about 8W into 9K @ ~200V B+ & 100V G2. they are sensitive tubes - only 6V pk to drive to full power but with all that sensitivity the heaters are current hungry - 1.2A/bottle. reminds me of the 6BK5s i toyed with a while back.

picked up an octet off ebay for a modest price. check out the construction in the pics below... damn that's heavy duty. no?

(http://i2.photobucket.com/albums/y11/pmitchel/2013-01-23_17-16-32_539_zps1c30f785.jpg)

(http://i2.photobucket.com/albums/y11/pmitchel/2013-01-23_17-17-55_914_zpsa2f002d8.jpg)

--DL

Title: Re: Top Gun Toobz.
Post by: kagliostro on January 23, 2013, 06:16:01 pm

Hi DummyLoad

I like this kind of your reports  :smiley:

K

Title: Re: Top Gun Toobz.
Post by: DummyLoad on January 23, 2013, 06:49:05 pm

Quote from: kagliostro on January 23, 2013, 06:16:01 pm

Hi DummyLoad

I like this kind of your reports  :smiley:

K

grazie kaglio

--DL

Title: Re: Top Gun Toobz.
Post by: John on January 23, 2013, 06:57:12 pm

So you'll be keeping us up to date on your project then, eh?  :icon_biggrin:

Title: Re: Top Gun Toobz.
Post by: DummyLoad on January 23, 2013, 07:58:46 pm

Quote from: John on January 23, 2013, 06:57:12 pm

So you'll be keeping us up to date on your project then, eh?  :icon_biggrin:

si! but working on standel clone first...  :icon_biggrin:

--DL

Title: Re: Top Gun Toobz.
Post by: kagliostro on January 24, 2013, 07:06:42 am

DummyLoad do you remember this ?

Quote

http://www.el34world.com/Forum/index.php?topic=11590.50

post # 70

Ciao

K

Title: Re: Top Gun Toobz.
Post by: DummyLoad on January 24, 2013, 07:15:08 am

Quote from: kagliostro on January 24, 2013, 07:06:42 am

DummyLoad do you remember this ?

Quote

http://www.el34world.com/Forum/index.php?topic=11590.50

post # 70

Ciao

K

yes, now i do.  :icon_biggrin:

Title: Re: Top Gun Toobz.
Post by: kagliostro on January 24, 2013, 07:16:35 am

As an inductor is really an unusual use of a tube to me

K