12AD7???

inharmonic · 5th July 2011, 12:33 AM

hai guys ... i'm a newbie here!!
is there any one can help me with 12AD7 NEC tube ...
i'd like to make some guitar preamp with this tube.

Eli Duttman · 5th July 2011, 01:27 AM

IIRC, for all practical purposes it's a 12AX7.

Miles Prower · 5th July 2011, 03:12 AM

An "*AX7" made for low microphonics and hum. Probably do well for a guitar pre.

planet10 · 5th July 2011, 03:23 AM

Almost all of my 12AD7 came out of Japanese reel-to-reels.

dave

cogsncogs · 5th July 2011, 06:51 AM

Quote:

Originally Posted by Miles Prower

An "*AX7" made for low microphonics and hum. Probably do well for a guitar pre.

And higher heater current.
12AX7: 150/300mA
12AD7: 225/450mA

Quote:

Almost all of my 12AD7 came out of Japanese reel-to-reels.

Akai for one...

inharmonic · 5th July 2011, 07:29 PM

ok, i see ... i get that tube from "rusty" TEAC reel-to-reels.
so, can i use that tube to make some guitar preamp ... or tube overdrive pedal??

west_nm · 6th July 2011, 06:12 PM

Quote:

Originally Posted by planet10

Almost all of my 12AD7 came out of Japanese reel-to-reels.

dave

I have an altec amplifier with a designated spot for one. "12AD7/12AX7"

Steve

5th July 2011, 12:33 AM	#1
inharmonic diyAudio Member Join Date: Mar 2011 Location: Yogyakarta, Indonesia	12AD7??? hai guys ... i'm a newbie here!! is there any one can help me with 12AD7 NEC tube ... i'd like to make some guitar preamp with this tube.

5th July 2011, 01:27 AM	#2
Eli Duttman diyAudio Member Join Date: Apr 2004 Location: Plainsboro, NJ	IIRC, for all practical purposes it's a 12AX7. __________________ Eli D.

5th July 2011, 03:12 AM	#3
Miles Prower diyAudio Member Join Date: May 2005 Location: USA Blog Entries: 2	An "*AX7" made for low microphonics and hum. Probably do well for a guitar pre. __________________ There are no foxes in atheistholes www.dolphin-hsl.com

5th July 2011, 03:23 AM	#4
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Almost all of my 12AD7 came out of Japanese reel-to-reels. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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5th July 2011, 07:29 PM	#6
inharmonic diyAudio Member Join Date: Mar 2011 Location: Yogyakarta, Indonesia	ok, i see ... i get that tube from "rusty" TEAC reel-to-reels. so, can i use that tube to make some guitar preamp ... or tube overdrive pedal??

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