NuiTekt HD-S Harmonic Distortion Effect Pedal Kit Owner’s Manual

NuiTekt HD-S Harmonic Distortion Effect Pedal Kit

Product Information

• Product Name: HD-S
• Model: EJ 1

Precautions

• Power supply: Please connect the designated AC adapter to an AC outlet of the correct voltage. Do not connect it to an AC outlet of voltage other than that for which your unit is intended.

• Handling: To avoid breakage, do not apply excessive force to the switches or controls.

• Care: If the exterior becomes dirty, wipe it with a clean, dry cloth. Do not use liquid cleaners such as benzene or thinner, or cleaning compounds or flammable polishes.

• Keep this manual: After reading this manual, please keep it for later reference.

• Keeping foreign matter out of your equipment: Never set any container with liquid in it near this equipment. If liquid gets into the equipment, it could cause a breakdown, fire, or electrical shock. Be careful not to let metal objects get into the equipment.
  If something does slip into the equipment, unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where the equipment was purchased.

• Notice regarding disposal (EU only): If the symbol is shown on the product, manual, battery, or package, you must dispose of it in the correct manner to avoid harm to human health or damage to the environment. Contact your local administrative body for details on the correct disposal method. If the battery contains heavy metals in excess of the regulated amount, a chemical symbol is displayed below the symbol on the battery or battery package.

Main Features

• HD-S is an effect pedal kit.

Specifications

• Model: HD-S

Parts List

• Checking the parts
• Cautions Before Assembly
• Assembly
• Operation Check
• Troubleshooting
• Part Names and Functions
• Quick settings
• Recommended Settings
• List of mounted parts
• Circuit Diagram
• Mounting Diagram

DECLARATION OF CONFORMITY (for USA)
Responsible Party: KORG USA INC.
Address: 316 SOUTH SERVICE ROAD, MELVILLE
Telephone: 1-631-390-6500Equipment Type: EFFECT PEDAL KITThis device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

All product names and company names are the trademarks or registered trademarks of their respective owners.

Product Usage Instructions

Power Supply
Please connect the designated AC adapter to an AC outlet of the correct voltage. Do not connect it to an AC outlet of voltage other than that for which your unit is intended.

Handling
To avoid breakage, do not apply excessive force to the switches or controls.
Care
If the exterior becomes dirty, wipe it with a clean, dry cloth.Do not use liquid cleaners such as benzene or thinner, or cleaning compounds or flammable polishes. Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment.If liquid gets into the equipment, it could cause a breakdown, fire, or electrical shock. Be careful not to let metal objects get into the equipment. If something does slip into the equipment, unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where the equipment was purchased.

Notice regarding disposal (EU only) If the symbol is shown on the product, manual, battery, or package, you must dispose of it in the correct manner to avoid harm to human health or damage to the environment. Contact your local administrative body for details on the correct disposal method. If the battery contains heavy metals in excess of the regulated amount, a chemical symbol is displayed below the symbol on the battery or battery package.

Precautions

Location
Using the unit in the following locations can result in a malfunction.

• In direct sunlight
• Locations of extreme temperature or humidity
• Excessively dusty or dirty locations
• Locations of excessive vibration
• Close to magnetic fields

Power supply
Please connect the designated AC adapter to an AC outlet of the correct voltage. Do not connect it to an AC outlet of voltage other than that for which your unit is intended.

Handling
To avoid breakage, do not apply excessive force to the switches or controls.

Care
If the exterior becomes dirty, wipe it with a clean, dry cloth. Do not use liquid cleaners such as benzene or thinner, or cleaning compounds or flammable polishes.
Keep this manual
After reading this manual, please keep it for later reference.
Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment. If liquid gets into the equipment, it could cause a breakdown, fire, or electrical shock.
Be careful not to let metal objects get into the equipment. If something does slip into the equipment, unplug the AC adapter from the wall outlet. Then contact your nearest Korg dealer or the store where the equipment was purchased.

THE FCC REGULATION WARNING (for USA)

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

If items such as cables are included with this equipment, you must use those included items.
Unauthorized changes or modification to this system can void the user’s authority to operate this equipment.

Notice regarding disposal (EU only)
If the symbol is shown on the product, manual, battery, or package, you must dispose of it in the correct manner to avoid harm to human health or damage to the environment. Contact your local administrative body for details on the correct disposal method. If the battery contains heavy metals in excess of the regulated amount, a chemical symbol is displayed below the symbol on the battery or battery package.

DECLARATION OF CONFORMITY (for USA)

Responsible Party: KORG USA INC.
Address: 316 SOUTH SERVICE ROAD, MELVILLE
Telephone: 1-631-390-6500
Equipment Type: EFFECT PEDAL KIT

Model: HD-S
This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference,and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTICE TO CONSUMERS

This product has been manufactured according to strict specifications and voltage requirements that are applicable in the country in which it is intended that this product should be used. If you have purchased this product via the internet, through mail order, and/or via a telephone sale, you must verify that this product is intended to be used in the country in which you reside.

WARNING: Use of this product in any country other than that for which it is intended could be dangerous and could invalidate the manufacturer’s or distributor’s warranty. Please also retain your receipt as proof of purchase otherwise your product may be disqualified from the manufacturer’s or distributor’s warranty. Company names, product names, and names of formats etc. are the trademarks or registered trademarks of their respective owners.

All product names and company names are the trademarks or registered trademarks of their respective owners.

Thank you for purchasing the Nu:Tekt HARMONIC DISTORTION Effect Pedal kit.
To help you get the most out of your new instrument, please read this manual carefully.

Main features

• The Nu:Tekt HARMONIC DISTORTION Effect Pedal kit is an effects kit that uses a newly-developed harmonic overtone composition circuit to create a new kind of distortion sound.
• This unit was developed under the direction of the legendary engineer at KORG who was responsible for developing the Uni-Vibe series, Fumio Mieda.
• This new circuit combines three separate distortion circuits to produce a distortion that gives the effect of changing frequency bands, an effect as yet unheard. What’s more, this effect lets you control the amount of distortion with the volume of your guitar.
• This unit features a tone circuit that alters the sound to match the harmonics, letting you enjoy a wide range of tones.
•  An analog gate circuit is built into this unit, which offers a noiseless sound at high gain.
• This kit is easy to assemble. All you need to do is attach the bottom plate, the knobs and the rubber feet.
• The four knobs are easy to operate, and you can turn the internal semi-fixed volume screws to create the settings you like to match the sound of your guitar.
• This document includes a detailed circuit diagram, mounting diagram and list of parts, so you can fully customize this unit to meet your needs.
• A tool and pick set to adjust the semi-fixed volume screws and the bottom plate screws is included with this kit. You can also use the included tools when you want to remove and modify the circuit board.
• Affix the included stickers where you like to make this unit look just the way you want.
• This sticker sheet includes hard-to-find stickers like the Keio Electronic
  Laboratories logo, an image of KORG’s legendary engineer Fumio Mieda and more.

Specifications

• Connectors and jacks: INPUT jack (monaural phone jack), OUTPUT jack (monaural phone jack), DC 9V jack ( )
• Power: 9V alkaline battery (6LF22/6LR61) (sold separately), or DC 9V AC adapter (sold separately)
• Battery life: Approx. 10 hr. (Using an alkaline battery)
• Current consumption: 45 mA
• Dimensions (W x D x H): 122 x 96 x 50 mm /4.80” x 3.78” x 1.97”
• Weight: 317 g / 11.18 oz. (without batteries)
• Included items: Owner’s Manual, Sticker sheet, Tool and Pick set
• Accessories (sold separately): AC adapter (DC 9V )
  Specifications and appearance are subject to change without notice for improvement.

Parts List

Checking the parts
Before assembly, make sure that all parts are on hand.
Contact us at nutekt.org if any parts are missing or damaged.

Cautions Before Assembly

• Be careful of injury when handling parts
  Use caution not to injure yourself due to the protruding parts when handling the circuit board. Use cotton work gloves to protect your hands when working. Also, be sure to wash your hands thoroughly after working.

• Tighten screws at a perpendicular angle
  Tightening screws that are inserted diagonally may damage the threads, making it impossible to tighten them again. Be sure to tighten screws so that they are inserted perpendicular to the surface.
  Use caution, as applying too much torque and tightening the screws too tightly may damage the parts.

• Do not injure yourself or scratch the surface with the tools.
  When using tools to tighten screws, make sure not to injure yourself, such as by getting your fingers pinched. Work carefully to avoid scratching the case or circuit board with the tools.
  Provide a sufficiently large work space to complete the assembly procedure, and prepare work mats so parts will not be scratched.

• Avoid losing the screws
  Handle the screws with caution, to avoid losing them. Do not use other screws aside from the ones included with this kit, and do not use the screws included with this kit for any other purpose.

Assembly

1. Connect the battery and fit it into the battery space.
   Batteries are not included. You will need to purchase a commercially available 9V alkaline battery (6LF22/6LR61).
   Store the battery connector in the battery cushion if you won’t be using the batteries.

2. Close the lower case [2], and secure it with the screws.
   Close the lower case and secure it with the case screws [5] in four places. Use tool [D] for this.
   Take care not to pinch the harness or other parts when closing the case.

3. Attach the rubber feet [4] onto the lower case.
   Attach the rubber feet [4] onto the lower case as shown in the diagram.

4. Attach the volume knobs [3].
   Mount the volume knobs onto their spindles.
   Tip: The diagram below shows an easy way to position the volume knob when installing.

Operation Check

When you have successfully finished assembling the unit, test its operation while reading “Part Names and Functions” on page 8 .
If you have found any problems with assembly or operation, use the troubleshooting steps below.

Troubleshooting

There aren’t enough parts.

• If you have lost some parts, contact us at nutekt.org.
• Also, contact us at nutekt.org if any parts were missing or damaged before you started to assemble the unit.

I can’t assemble the unit, because I broke a part.

• Please contact us at nutekt.org.

The unit makes an abnormal sound when I tilted it or shook it after assembly.

• A loose screw or other part might be left inside the unit. Open the lower case and check the inside.

The volume controls or jacks are loose.

• Make sure that the nuts are fastened tightly. Remove the knobs from the volume controls and retighten the nuts.
• For the footswitch nut, use tool [A].
• For the rear jack nuts, use tool [B].
• For the volume nuts, use tool [C].

Part Names and Functions

1. VOLUME knob: Adjusts the volume.

2. TONE knob: Adjusts the tone amount.

3. GATE knob: Adjusts the gate level. When this is set to minimum, sound is not readily produced, which lets you get rid of any noise that the guitar might be picking up.

4. GAIN knob: Used to adjust the amount of distortion.

5. EFFECT ON/OFF switch: Switches the effector on/off.

6. EFFECT ON/OFF LED: The indicator lights when the effector is on.

7. Adjustable half-fixed volume screws: Use tool [E] to adjust these.
   HARMONIC 1: Adjusts the level of distortion circuit 1. When this is turned higher, the LED in the illumination window lights up blue according to the input signal.
   HARMONIC 2: Adjusts the level of distortion circuit 2. When this is turned higher, the LED in the illumination window lights up green according to the input signal.
   HARMONIC 3: Adjusts the level of distortion circuit 3. When this is turned higher, the LED in the illumination window lights up red according to the input signal.

8. Illumination window

Quick settings

1. Start out by making the following settings.

   • VOLUME: center
   • TONE: center
   • GATE: max.
   • GAIN: center
   • HARMONIC 1–3: max.

2. Turn the GAIN knob until you can hear a swelling or modulated sound.

3. Turn the TONE knob to adjust the tonal character of the distortion.

4. Turn the GATE knob to adjust when the gate should close when the sound stops. The noise is cut off once the gate closes.

5. Use the VOLUME knob to adjust the volume.

6. The swelling or modulated sound also changes according to the volume of your guitar.
   The effect changes even when you play while muting the strings .

7. Adjust HARMONIC 1–3 to make the combined distortion sound change.
   Try playing around with different combinations of settings.
   To adjust the adjustable half-fixed volume screws (HARMONIC 1–3), use the special adjustment screwdriver that’s included in the tool and pick set.
   When using a metal screwdriver or similar tool, the LED color may change or the LED may blink if the metallic part of the screwdriver touches the frame of the case while you’re making adjustments.

Recommended Settings

Extreme Distortion Sound

Use the GAIN knob to adjust the strength of the distortion.
The sound may get too heavily distorted and unclear when the GAIN knob is set to maximum.
Set HARMONIC 1, 2 and 3 (the adjustable half-fixed volumes) all to maximum.

Fuzz Sound

Set the GAIN knob and HARMONIC 1 to maximum for a strong fuzz sound.
This is a full-range overdrive effect that emphasizes the tube sound.
Set HARMONIC 1 (the adjustable half-fixed volume) to maximum, and HARMONIC 2 and 3 to minimum.
Note: Set HARMONIC 1 and 2 to minimum and HARMONIC 3 to maximum for an even wilder fuzz tone.

List of mounted parts

Part

number

| ****

Circuit number

| ****

Part name

| ****

Rating

| Quantity
---|---|---|---|---
1| IC6| Regulator IC| NJM2882F05-TE1| 1
2| IC4| DC/DC Converter| XC9143B10DER-G| 1
3| IC1-3, IC5| Operational amplifier| SO8412P-TH-WS| 4
4| DT1, DT2| Digital Transistor| DTA014EUBTL| 2
5| WQ1-7| Transistor| PMP4201V| 7
6| Q5| Transistor| 2SD2114KT146| 1
7| Q7| Transistor| 2SC2712-BL| 1
8| Q6| Transistor| 2SA1162-GR| 1
9| F1| J-FET| 2SK209GR| 1
10| F2-4| MOSFET| RE1J002YNTCL| 3
11| D5-10, D27-28| Switching diode| 1SS355| 8
12| D2| Schottky barrier diode| RB160L-40TE25| 1
13| ZD1| Zener diode| GDZJ4.7C| 1
14| LED2-6| LED| LRTBR48G-P9Q7-1| 5
15| L3| Inductor| SMTDR32-2R2M| 1
16| EMI1-2| Inductor| BLM18BD102SN1D| 2
17| C2, C47, C50, C78-79| Ceramic capacitor| 33pF| 5
18| C46, C77| Ceramic capacitor| 100pF| 2
19| C32| Ceramic capacitor| 470pF| 1
20| C25, C45| Ceramic capacitor| 1000pF| 2
21| C31, C52| Ceramic capacitor| 2200pF| 2
22| C49| Ceramic capacitor| 3300pF| 1
23| C40| Ceramic capacitor| 5600pF| 1
24| C51| Ceramic capacitor| 8200pF| 1
---|---|---|---|---
25| C26, C28, C53| Ceramic capacitor| 0.01μF| 3
26| C7-8, C10, C13, C21, C24, C27, C29-30, C34, C36-38, C58-71, C75| Ceramic capacitor| 0.1μF| 28
27| C35, C41-42, C55| Ceramic capacitor| 1μF| 4
28| C23, C56| Ceramic capacitor| 4.7μF| 2
29| C22, C57, C80| Ceramic capacitor| 10μF| 3
30| C3, C11, C16, C20| Electrolytic capacitor| 0.1uF16V over| 4
31| C5, C12, C14, C17, C19, C44| Electrolytic capacitor| 10μF16V over| 6
32| C1, C4, C6, C9, C76| Electrolytic capacitor| 100μF16V over| 5
33| R72, R83, R49, R90, R93, R178| Resistor| 0Ω| 6
34| R40| Resistor| 10Ω| 1
35| R39, R53, R64| Resistor| 100Ω| 3
36| R65| Resistor| 330Ω| 1
37| R50| Resistor| 470Ω| 1
38| R35| Resistor| 680Ω| 1
39| R6, R11, R18, R24, R32, R37-38| Resistor| 1kΩ| 7
40| R78| Resistor| 1.5kΩ| 1
41| R46| Resistor| 2.2kΩ| 1
42| R55-57, R179| Resistor| 4.7kΩ| 4
43| R73-74| Resistor| 5.6kΩ| 2
44| R52| Resistor| 6.8kΩ| 1
45| R58, R60, R62-63, R70, R80, R82| Resistor| 10kΩ| 7
46| R26, R33| Resistor| 12kΩ| 2
47| R76, R84| Resistor| 15kΩ| 2
48| R61| Resistor| 22kΩ| 1
---|---|---|---|---
49| R13, R19| Resistor| 27kΩ| 2
50| R2-5, R7, R9, R12, R15-17, R21-23, R25, R28-31, R42, R47, R185| Resistor| 33kΩ| 21
51| R1, R10, R14, R20, R27| Resistor| 47kΩ| 5
52| R36| Resistor| 68kΩ| 1
53| R41, R44, R66-67, R71, R75, R85, R183| Resistor| 100kΩ| 8
54| R51, R79, R118, R124| Resistor| 220kΩ| 4
55| R43| Resistor| 470kΩ| 1
56| R59| Resistor| 680kΩ| 1
57| R8, R34, R45, R48, R68, R77, R86| Resistor| 1MΩ| 7
58| CN1, CN4| Board-in harness| 6 wire| 2
59| CN2, CN3| Connectors| B6B-PH-K-S| 2
60| DC1| DC jack| LD-0202AH-2.0-03A| 1
61| PH1-2| Phone jack| LJB0664-6| 2
62| VR3| Volume control| 5K B| 1
63| VR4| Volume control| 20K B| 1
64| VR1, VR5| Volume control| 100K B| 2
65| VR2, VR6-7| Trimmer Potentiometer| 100K B| 3
66| BATT1| Battery snap| —| 1

Circuit Diagram

Mounting Diagram

Note: An electrolytic capacitor with a higher rated voltage than the voltage specified may have been used.

4015-2 Yanokuchi, Inagi City, Tokyo 206-0812 JAPAN

www.korg.com

©2022KORG INC.
Published 09/2022 0409 DH Printed in Japan

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