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DEPTHRATERESOSWEEP

125B · 4 knobs

PCB Guitar Mania

Orbital Device

Based on the EQD Grand Orbiter· 1 other board clones it

Category
Phaser· Phaser machine
Controls
Depth · Rate · Reso · Sweep
Difficulty
Intermediate
Price
€11.90out of stock

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From the vendor

Project overview

The Orbital Device sounds are definitively from outer space and will take your brain out of this world. The EQD Grand Orbiter Phase Machine inspires this all-analog, true bypass, 4 stages OTA-based phaser.

Introduction

3, 2, 1, Liftoff! The main engines ignite the entire orbiter clatter and shudder like a skyscraper in an earthquake. A deep rumble jolts the cabin as the main engines come up to full thrust. You and your crew are ready; you are going up in search of the ultimate cosmic sound. Lucky for you, the Orbital Device has a resourceful panel control that gives you the ability to craft and fine-tune the exact effect you’re after:

This 4 stage OTA-based phaser has a diverse feature set that can go from motionless and resonant to slow and smooth and on through fast and elliptical.

With the Three-way toggle switch, you can select between different ranges of modulation. Try a slow, clean sound with the Rate 1 mode. Kill the LFO and use the Orbital Device as a fixed resonant filter with the Rate 2 mode. Finally, change to a fast sweep mode with Rate 3. Altogether, control the fine-tune speed of the LFO in each of these modes with the master Rate control. The flashing LED acts as a visual indicator, even when the effect is in bypass mode.

Use the “Phase/Vibrato” switch to make a true pitch vibrato; when in “Vibrato” mode, the dry signal is removed, and the Depth controls act as a volume control.

The Depth control blends the shifted signal in with the dry signal and controls the effect’s intensity. The Rate control fine-tunes the speed of LFO. With Sweep, you will able to control the frequency range. And the Resonance controls the effect regeneration.

This phaser will sound interestingly different when placed either before or after distortion, with spectacular extragalactic results either way!

Controls

Potentiometers

• Depth

• Rate

• Reso

• Sweep

Switches

• PV

• Range

For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.

For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Orbital Device 1v1 – Building Docs

Orbital Device – Drilling template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 63 rows

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RefValueNormalizedTypeNotes
Resistors 35
R304K74.7k
R314K74.7k
R32470K470k
R11M1M
R210K10k
R3456K56k
R310K10k
R3556K56k
R410K10k
R3627K27k
R510K10k
R6470R470
R7100K100k
R827K27k
R91K21.2k
R1027K27k
R1110K10k
R1227K27k
R131K21.2k
R1427K27k
R1510K10k
R1627K27k
R171K21.2k
R1827K27k
R1910K10k
R2027K27k
R211K21.2k
R2210K10k
R2327K27k
R2427K27k
R258K28.2k
R26220K220k
R27100K100k
R28150K150k
R2910K10k
Capacitors 17
C1100n100n
C21u1u
C3100p100p
C41u1u
C52n22.2n
C62n22.2n
C72n22.2n
C82n22.2n
C91u1u
C101u1u
C111u1u
C1247n47n
C16100n100n
C131u1u
C144u74.7u
C15100u100u
C1710u10u
Diodes 1
D11N58171N5817
ICs 5
IC1LM13700NLM13700N
IC2LM13700NLM13700N
IC3LM13700NLM13700N
IC4TL072TL072
IC5TL072TL072
Potentiometers 4
DEPTH25KBB25kPotentiometer
RATE1MCC1MPotentiometer
RESO1MCC1MPotentiometer
SWEEP50KBB50kPotentiometer
LEDs 1
R33RLED*RLED*

Other boards based on the EQD Grand Orbiter