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NUTUBE HEADPHONE AMPLIFIER KIT
2019
Table of Contents
HA-S
Main features .......................................................................2
Cautions Before Assembly.................................................5
Assembly .............................................................................6
Part Names and Functions ............................................... 11
How to Use the Nu:Tekt HA-S ........................................... 11
Adjusting the main circuit board ..................................... 11
E J 2
Troubleshooting ................................................................. 12
Replacing the operational amplifier ................................ 12
Specifications .................................................................... 12
Mounting Diagram ............................................................. 13
List of mounted parts ....................................................... 14
CIRCUIT DIAGRAM ........................................................... 16
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Tools to prepare................................................................................... 5
Checking the parts .............................................................................. 5
Install the main circuit board into the case .................................. 8
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Table of Contents
Related Manuals for Korg Nu:Tekt HA-S
Summary of Contents for Korg Nu:Tekt HA-S
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Page 1: Table Of Contents
Preparing the main circuit board and Nutube circuit board ..6 Install the main circuit board into the case ........8 Part Names and Functions ..........11 How to Use the Nu:Tekt HA-S ........... 11 Adjusting the main circuit board ........11 E J 2 Troubleshooting .............. -
Page 2: Main Features
Furthermore, it generates the response and same rich harmonic character- • The HA-S is a kit to assemble a hi-fi headphone amp that utilizes a Korg istics of conventional vacuum tubes. - Page 3 Precautions Notice regarding disposal (EU only) If this symbol is shown on the product, manual, battery, or package, Location you must dispose of it in the correct manner to avoid harm to human health or damage to the environment. Contact your local administra- Using the unit in the following locations can result in a malfunction.
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Page 5: Cautions Before Assembly
Cautions Before Assembly Tools to prepare You will need the following tools in order to assemble this kit. Note: You will also need the AA alkaline batteries and so on. These items are Be careful of injury when handling parts not included, so please obtain them separately. -
Page 6: Assembly
Assembly Attach the cushion onto the Nutube circuit board unit. Attach cushion N1 (2) onto the edge of the Nutube circuit board. Attach cushion N2 (3) onto both upper edges of the Nutube. Preparing the main circuit board and Nutube circuit board CushionN2 (3) CushionN2 (3) Parts List... - Page 7 Attaching the hex spacers Mount the hex spacers (5, 6) onto the circuit board. Use the screws (8) to affix the two hex spacers (6) and the internal tooth lock washers (7) for the volume and jack side. In the same way, tighten the hex spacers (6) on the Nutube circuit board side and the internal tooth lock washers (7) by tightening the screws for the lower hex spacers (5).
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Page 8: Install The Main Circuit Board Into The Case
Install the main circuit board into the case 1 Case Mint-tin size case 2 Pan head screws M2, No.0, L=2mm, Silver Parts List 3 Cover Resin treatment 4 Knurled screw M2, L=6mm 5 Main circuit board Parts for assembly on pages 6 and 7 6 Insulation sheet 7 Volume nut Included with Volume... - Page 9 Fix the main circuit board in place on the case Attach the washer [8] to the volume, and then use the volume nut [7] to temporarily tighten the volume onto the case. Put the insulation sheet [6] into the case [1]. Make sure that the stereo mini jack protrudes from the hole in the Peel off the release paper on the double-sided tape attached to the case.
- Page 10 Put the batteries and close the case With the printed jack names facing the jack side, put the cover [3] on, and fasten the knurled screws [4] in four places. Put the batteries [10] in. Take care not to pinch the harness or other parts when closing the cover.
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Page 11: Part Names And Functions
NFB switch: Setting the switch to “A” will set the circuit to a non-NFB circuit. The harmonics present in the Nutube will be amplified to How to Use the Nu:Tekt HA-S create a sound that is even closer to that of a vacuum tube. Setting the switch to “B”... -
Page 12: Troubleshooting
Troubleshooting Replacing the operational amplifier When you have successfully finished assembling the unit, test its operation The operational amplifier can be replaced with a DIP8 type operational while reading “Part Names and Functions” . amplifier. The power supply for the OP amp is a 24–28 V single power If you have found any problems with assembly or operation, use the supply system. -
Page 13: Mounting Diagram
Mounting Diagram - 13 -... -
Page 14: List Of Mounted Parts
List of mounted parts Main circuit board NJM4580 R35, R36 Chip resistor 4.7K Operational amplifier MUSES01 R6, R7, R21, Chip resistor R24, R26, R28 Operational amplifier IC1S 8pin DIP socket R8, R9 Chip resistor C10, C14 Chip ceramic capacitor 10PF CH R10, R12, R17, Chip resistor Chip ceramic capacitor... - Page 15 Nutube circuit board Voltage regulator TLV61046A Voltage regulator TPS62510 Q1, Q2 J-FET 2SK209 Chip ceramic capacitor 22PF CH Chip ceramic capacitor 0.001μF B Chip ceramic capacitor 0.1μF B Chip ceramic capacitor 4.7μF B Chip ceramic capacitor 4.7μF B Chip ceramic capacitor C1, C2 22μF B Chip Electrolytic capacitor...
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Page 16: Circuit Diagram
CIRCUIT DIAGRAM 1.8V-3.6V 2SK209 2SK209 0.7V OPEN 0.001uF B 120K 22PF CH MODE 0.7V AGND TLV61046A AVIN PGND PVIN 2.2uH 10uH TPS62510 22uF B 0.1uF B 4.7uF B 22uF B 390uF/2.5V 4.7uF B S12B-ZR B12B-ZR VCC_2 OPEN 100uF/35V VCC_2 VCC_2 VR1A 200K B 100K_A...