Chandler - Tube Driver (rack version) [schematic]
- DahakaNishoba
- Breadboard Brother
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- Posts: 62
- Joined: 22 Jul 2009, 08:27
- Location: Rome - Italy
Ok I got a RACK VERSION of a rev1 chandler tube driver...BUT...this has been modified by the previous owner
He's an acoustic guitar master and used this ONLY as a preamp...so asked a tech to modify this to REMOVE any drive or distorte signal
I can provide gutshots of everything inside but its modified so the request is
ANYONE HAS a PCB LAYOUT/PHOTO/ or actually a rack like the one I have...just Open it and give me some info
i cant really see any sign of mod (apart from some "new" resistor or unsoldered holes in the pcb ) but without anything of original ones its really hard to do something
Again i can post pics if anyone is interested...is a rack version with
DRIVE
BIAS
MASTER
CONTOUR
3 EQ
He's an acoustic guitar master and used this ONLY as a preamp...so asked a tech to modify this to REMOVE any drive or distorte signal
I can provide gutshots of everything inside but its modified so the request is
ANYONE HAS a PCB LAYOUT/PHOTO/ or actually a rack like the one I have...just Open it and give me some info
i cant really see any sign of mod (apart from some "new" resistor or unsoldered holes in the pcb ) but without anything of original ones its really hard to do something
Again i can post pics if anyone is interested...is a rack version with
DRIVE
BIAS
MASTER
CONTOUR
3 EQ
The way electronics work in a stompbox is like the way pixels move in a videogame
it's Magic, in Technology
it's Magic, in Technology
- Dirk_Hendrik
- Old Solderhand
Information
Photo's? A few shots on the wiring only.
preps this helps:
http://www.dirk-hendrik.com/temp/Chandl ... r_Rack.pdf
preps this helps:
http://www.dirk-hendrik.com/temp/Chandl ... r_Rack.pdf
- DahakaNishoba
- Breadboard Brother
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- Posts: 62
- Joined: 22 Jul 2009, 08:27
- Location: Rome - Italy
ok that was WAY helpful
now I have something to work with.
anyway I just unmounted/unscrewed the pcb pots and jacks....everything seems at his place...even solder joints....seems "original" but the sound is WAY different than an original one...
anyone has a shot of both sides of pcb ? (or even only component side) at least I wanna kno if a pair of unsoldered ground pads are normally empty or theres something wrong
now I have something to work with.
anyway I just unmounted/unscrewed the pcb pots and jacks....everything seems at his place...even solder joints....seems "original" but the sound is WAY different than an original one...
anyone has a shot of both sides of pcb ? (or even only component side) at least I wanna kno if a pair of unsoldered ground pads are normally empty or theres something wrong
The way electronics work in a stompbox is like the way pixels move in a videogame
it's Magic, in Technology
it's Magic, in Technology
- Dirk_Hendrik
- Old Solderhand
Information
DahakaNishoba wrote:ok that was WAY helpful
now I have something to work with.
anyway I just unmounted/unscrewed the pcb pots and jacks....everything seems at his place...even solder joints....seems "original" but the sound is WAY different than an original one...
anyone has a shot of both sides of pcb ? (or even only component side) at least I wanna kno if a pair of unsoldered ground pads are normally empty or theres something wrong
I serviced one of these a few weeks ago. (hence the schem) Shoot some pics and I'll tell you more if I can.
Edit; the owner sent me pics prior to shipping the unit:
- Dirk_Hendrik
- Old Solderhand
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- DahakaNishoba
- Breadboard Brother
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- Posts: 62
- Joined: 22 Jul 2009, 08:27
- Location: Rome - Italy
Hmmmm huge thanks....ok so there are empty pads even in original one...I can't notice nothing major...just a different transformer (mine seems newer or just in better conditions....will shoot some macro of the inside tomorrow mornin...
The way electronics work in a stompbox is like the way pixels move in a videogame
it's Magic, in Technology
it's Magic, in Technology
- sadrew
- Breadboard Brother
Hi everybody,
I am in the process of making a diy project for this little beast!
I am redrawing Dirk's schematic on Eagle and next step will be making a board layout, obviously available for everyone.
I am asking if someone would be so patient to contribute and give a look to my schematic. I am mostly interested in checking potentiometers orientation, jacks normalling and spotting overall mistakes.
Many thanks in advance
I am in the process of making a diy project for this little beast!
I am redrawing Dirk's schematic on Eagle and next step will be making a board layout, obviously available for everyone.
I am asking if someone would be so patient to contribute and give a look to my schematic. I am mostly interested in checking potentiometers orientation, jacks normalling and spotting overall mistakes.
Many thanks in advance
I was wondering if anyone has a schematic for the Chandler rack mount TDR-101 Tube Driver. It is quite different from the original 4 knob pedal- which I bought in 1986/7 but traded in a year later for the rackmount version. (I should have gotten suspicious when the store was offering me the full price I had paid for it toward the "new and improved" model... in most cases it would have been 50-70% of what I paid originally.)
I thought that the rackmount version was too harsh so I added a cap or two (somewhere!) to mellow things out. I'm glad to have found the schematics for the original 4 knob floor pedal here- I hope to rewire my rackmount POS as the 4 knob floor pedal. (One good thing about the rackmount version was the boost switch- I may try to incorporate that into the good design.)
Thanks for all of the great information on the Tube Driver!
Steve Ahola
P.S. About 15 years ago I got a box of 3 or 4 broken rackmount TDR-101's from Dan Torres for $10 so now that I have the real schematic I will see what I can do with them! (I just need to remember what I did with that damn box!)
I thought that the rackmount version was too harsh so I added a cap or two (somewhere!) to mellow things out. I'm glad to have found the schematics for the original 4 knob floor pedal here- I hope to rewire my rackmount POS as the 4 knob floor pedal. (One good thing about the rackmount version was the boost switch- I may try to incorporate that into the good design.)
Thanks for all of the great information on the Tube Driver!
Steve Ahola
P.S. About 15 years ago I got a box of 3 or 4 broken rackmount TDR-101's from Dan Torres for $10 so now that I have the real schematic I will see what I can do with them! (I just need to remember what I did with that damn box!)
Last edited by lolbou on 09 Dec 2011, 09:08, edited 1 time in total.
Reason: Post moved to Chandler Rack thread : have a little search next time... ;)
Reason: Post moved to Chandler Rack thread : have a little search next time... ;)
- Bernardduur
- Transistor Tuner
@ Dirk; I traced a repair here. Only difference with your unit is R17. That resistor here is only 2k2 (22k in your unit).
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- Manfred
- Tube Twister
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Sorry, the RT-922 only.Vicus wrote:Does some one have the schematic of RT-913? The six knob version.
- Attachments
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- RT 922-924 Switching-FX loop.pdf
- (154.11 KiB) Downloaded 306 times
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- RT 922 preamp.pdf
- (178.94 KiB) Downloaded 388 times
Hi,sadrew wrote:Here it is
Can you send me the eagle schema file that you created ? I would like to build a PCB layout from schema and not from image files that can be found on Baja post. I promise that I will share it here.
Thanks.