NTK Instruction Manual www.rodemic.
Introduction Thank you for investing in the multi award-winning NTK valve condenser microphone. The NTK is the result of an extensive development program to create a truly superior valve condenser microphone. The heart of the NTK is the Australian designed and manufactured HF-2 capsule. The electronic circuitry complementing this very sensitive transducer includes a hand-selected twin-triode 6922 valve and audiophile grade components and layout.
Specifications Acoustic Principle: Pressure gradient Active Electronics: Valve/tube impedance converter with bipolar output buffer Directional Pattern: Cardioid (see graph) Frequency Range: 20Hz ~ 20,000Hz (see graph) Output Impedence: 200Ω Sensitivity: -38dB re 1V/Pa @ 1kHz (25mV/Pa @ 94dB SPL) ±2dB @ 1kHz Equivalent Noise: 12dBA SPL (per IEC651) Maximum Output: +29dBu Dynamic Range: >147dB (per IEC651) Maximum SPL: >158dB (@ 1kHz, 1% THD into 1kΩ) Signal/Noise: >82dB SPL (@ 1kHz, rel
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Features • Large capsule (1”) with gold-plated diaphragm • Class “A” valve circuitry • Hand selected and graded 6922 twin-triode valve • Dedicated power supply • Ultra low noise • Wide dynamic range • High strength heat treated steel mesh head • High level of RF rejection • Designed & manufactured in Australia • Full 10 year guarantee* IMPORTANT NOTICE DO NOT DISCONNECT THE MICROPHONE CABLE WHILE THE SYSTEM IS POWERED AS THIS MAY RESULT IN DAMAGE TO THE MICROPHONE NEVER REMOVE THE MAINS EARTH DOING SO CAN
Before using the NTK • Ensure that your NTK has been set to the correct voltage, as used in your country. The NTK can be used with mains suppliy voltages of between either 110-120V 50/60Hz or 220-240V 50/60Hz. - To select for 110-120V use, set the voltage selector to 115V. - To select for 220-240V use, set the voltage selector to 230V. • On either voltage selection the mains fuse (inside the mains socket) is always to be a T500mA slow blow fuse.
Connecting the NTK • Having ensured that the power supply is set to the correct voltage you can begin to connect the NTK to the power supply. Do not connect the power to the mains before connecting the microphone. • Connect the male 7-pin plug of the NTK cable to the 7-pin input socket on the rear of the power supply. • Connect the female 7-pin plug of the NTK cable to the microphone. Ensure that both plugs are correctly aligned and pushed firmly into their respective sockets.
Using the NTK • The gold dot on the face of the NTK indicates the front of the microphone, and the pick-up area of the cardioid pattern. Please be sure to have the side with the dot facing the sound source you wish to record. • Microphone technique, or how to get the sound you want, requires experimentation. We suggest that you start with the channel EQ set to ‘OFF’ or ‘FLAT’ (no boost or cut).
• We strongly recommend the use of a pop shield or filter for all vocal recording. These aid in minimising plosive sounds (hard ‘P’, ‘B’, ‘T’ and ‘K’ sounds) that produce a sudden jet of air which can cause the capsule to overload and produce a ‘popping’ sound. • Any moisture on the microphone capsule can cause problems for condenser microphones, however the use of a pop shield or wind shield (optional accessory WS2) will reduce the risk of this occurring.
Storage • After use the NTK should be removed from its mount, wiped with a dry, soft cloth and placed in its protective case. • Be sure to place the moisture-absorbent crystals (supplied) at the head of the microphone, so as to absorb any moisture present. Eventually this pack of crystals will need to be dried. This is indicated by the crystals turning pink in colour. They can easily be re-used by placing them in an oven at 100 - 150 degrees celsius for approximately ten minutes.
IMPORTANT NOTICE NOTE: There are no user-serviceable parts inside the NTK supply, but there ARE potentially lethal voltages. If the supply does not work correctly, you should consult either the dealer you purchased the microphone from, or a qualified electronic technician. DO NOT under any circumstance open the unit yourself! ACHTUNG: Das NTK Netzteil enthält keine Teile, die vom Benutzer repariert werden können.
Warranty All microphones are warranted for one year from date of purchase. You can extend that to a full ten years if you register online at www.rodemic.com. The warranty covers parts and labour that may be required to repair the microphone during the warranty period. The warranty excludes defects caused by normal wear and tear, modification, shipping damage, or failure to use the microphone as per the instruction guide.
