Earthquaker Devices - Grand Orbiter

Beedoola · Post by **Beedoola** » 06 Sep 2014, 01:45

Anyone have any info one this circuit?

destro · Post by **destro** » 16 Dec 2015, 04:24

I checked out the v1 at some point and found it was very similar to the ross phaser with mods similar to the ones at tonepad. I know they also mention the dod490, but found more similarities to the ross. Check out tonepad's add on stage board if you want deeper.

Pokfor · Post by **Pokfor** » 02 Jul 2018, 11:35

I was interested in this pedal. Who can make a photo of the board?

Post by **modman** » 02 Jul 2018, 12:02

Pokfor wrote:I was interested in this pedal. Who can make a photo of the board?

Who can use google?

destro wrote:I checked out the v1 at some point and found it was very similar to the ross phaser with mods similar to the ones at tonepad. I know they also mention the dod490, but found more similarities to the ross. Check out tonepad's add on stage board if you want deeper.

Who can read?

plush · Post by **plush** » 02 Jul 2018, 12:05

Pokfor wrote:I was interested in this pedal. Who can make a photo of the board?

Google images
V3 is based on 3 lm13700 and 1 tl074 same as v2 does, but uses SMT and 1/8w resistors

Pokfor · Post by **Pokfor** » 02 Jul 2018, 12:22

I already saw these pictures, and believe me, I studied them in great detail. I used Google for a long time before writing here. I was hoping to see something more detailed than these two photos.
The fact that the base is coming from Ross, I already understood and confirmed on these photos, but it seems to me that interesting solutions on the diagram should.
For example, work Sweep. I understand how it is arranged theoretically, but I would really like to see it.
Depth is also interesting. I thought this controller controls the width of the LFO, but it turned out that it really mixes dry and wet signals.
Sorry for my english

POTL · Post by **POTL** » 03 Jul 2018, 15:32

Need good photos of the board from two sides.
Let's think about what we have.
1) The site says that this is a 4-stage phaser, then 2 lm13700 are used in the phase shift phase
2) According to different sources - this scheme is based on DOD490 and ROSS Phaser, then 3 lm13700 is used in the LFO section
3) We have 4 channel op amp, if we look at the madbead project, we can understand how it is used
a) Input buffer
b) The virtual ground's buffer
c) Input filter
d) Output filter
Many argue that the sound is more like Phase 90 than Small Stone, so in the filter section, you should expect components that are similar in terms of denominations.
http://www.madbeanpedals.com/projects/S ... ht2015.pdf
viewtopic.php?t=1894&p=186129

Mehdi87 · Post by **Mehdi87** » 08 Apr 2020, 19:45

Hello
I'm searching a long while for a Earthquacker grand orbiter
Does anyone have fundamental informations or shematic about that unit.

Thanks

Post by **modman** » 08 Apr 2020, 21:46

Mehdi87 wrote:Hello
I'm searching a long while for a Earthquacker grand orbiter
Does anyone have fundamental informations or shematic about that unit.

Please use the search funtion -- I merge your message with the relevant thread. There is only a schematic if somebody draw one, still some work to be done.
We could really do with pictures from both sides of the pcb.

Mehdi87 · Post by **Mehdi87** » 08 Apr 2020, 23:02

hi, thanks for moving the request.
I found this pdf, it includes the diagram as well as the values of all the parts, but not the pcb transfer
https://www.pedalpcb.com/docs/Circulator.pdf