Cascade 4 of these:
http://v3.espacenet.com/origdoc?CY=gb&LG=en&F=4&IDX=US2376392&DB=EPODOC&QPN=US2376392
and automize "r":
perfect building block for a "Grand Stone" (Maxolith) Tube-Phaser(TM)
Quote from: puretubeperfect building block for a "Grand Stone" (Maxolith) Tube-Phaser(TM)
... you mean Thermo-Vibe (C) :wink:
Interesting idea, direct coupling is used by few tube circuit designers nowadays - HiWatt made use of it in their preamps ... I used it in my TweedReverb conversion for BF/SF Reverb amps to couple Reverb to the Bassman preamp ...
In this pseudo "all-pass" case, by loading the follower node with a value (r) eventually less than the bias resistance value of the stage (2R) you'll start getting noticeable non-linear distortion ... assuming you'd go that far it would produce lots of colouration at extreme phase shifts - a cool possibility ... the other nice thing here is you don't have to equalize the driving point impedances to get good cancelling with this arrangement ...
of course, I do the shift differently, using less triodes... :wink:
(http://www.puretube.com/T-PHASER%20cor.2.jpg)
... say, you need doll feet syndrome to operate that thing !
:lol:
for young adult bigfooters,
we also offer this extended enclosure floor model (as opposed to the AMP-TOP box):
(http://img.photobucket.com/albums/v442/lectronix/tube-wahbrato.jpg)
(4 12AX7s in slightly smaller footprint than the famous E-H "diamond" box).
The Wahbrato (as the name implies) offers Vibrato,
and the unheard Modulated Wah
plus Phased Wah and Wah`d Phase,
additionally to the 6-stage pure tube Phasing...
[currently not in production]
Quote from: Eb7+9
In this pseudo "all-pass" case, by loading the follower node with a value (r) eventually less than the bias resistance value of the stage (2R) you'll start getting noticeable non-linear distortion ... assuming you'd go that far it would produce lots of colouration at extreme phase shifts - a cool possibility ...
see page 2, 1st column, line 60...
then there`s always that other circuit (newer)...:
http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=US2946016&F=0&QPN=US2946016
That's some cool shit man !!
... looks like it runs on Propane :twisted:
would be nice to hear your take/details on the PSU's used in them bladerunners ...
Here`s another one (http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=US2845598&F=0&QPN=US2845598),
with "automized" (voltage-controlled) variable phaseshift from Cincinnati/Ohio...
Quote from: puretube on May 03, 2005, 06:33:38 AM
of course, I do the shift differently, using less triodes... :wink:
(http://www.puretube.com/T-PHASER%20cor.2.jpg)
Mini-toggles that close to a stompswitch ?!?
Hmmm....
Quote from: DougH on July 23, 2008, 12:40:31 PM
Quote from: puretube on May 03, 2005, 06:33:38 AM
of course, I do the shift differently, using less triodes... :wink:
(http://www.puretube.com/T-PHASER%20cor.2.jpg)
Mini-toggles that close to a stompswitch ?!?
Hmmm....
perfectly OK for the designer-operated prototype...
You missed the improved, later version?:
(http://img.photobucket.com/albums/v442/lectronix/tube-wahbrato.jpg)
Okay, gotcha... :icon_wink:
I was wondering, hmmm, how many people have stepped on those and broken them??
Haha, never mind... :icon_wink:
Quote from: puretube on July 23, 2008, 12:48:29 PM
perfectly OK for the designer-operated prototype...
You missed the improved, later version?:
If you no longer need the prototype sling it my way - I could pick it up this week - I'm currently touring through the Netherlands and Germany! I have my tube pedals with me too.
It`s @ E-H, LIC...
One can use a 6q11 for the cirquit in the first post.