45554 RDE NTK

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interstage
Telefon 3946 0000, fax www.interstage.dk
Phistersvej 31, 2900 Hellerup, Danmark

- pro audio with a smile

NTK Instruction Guide
STUDIO CONDENSER MICROPHONES

(EMC, LVD)

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Valve Condenser Microphone
Serial Number:.. Checked by:... Date:...
Thank you for investing in your NTK. You have chosen a very special audio product which is the culmination of an extensive development program.

The NTK

Our brief was to produce a truly superior valve condenser microphone. That has been achieved. The nest components, and an uncompromising build philosophy ensure that your creative efforts will gain their just rewards.

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The NTK comes complete with the following accessories.

Power Supply (NTK-PS)

NTK Cable (NTR-C)

Power Cable (PL100)

Stand Adaptor (M2)
Available as an optional extra:

Shock Mount (SM2)

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SPECIFICATIONS:

Capsule: Active Electronics: Polar Pattern: Output Impedance: Sensitivity: Equivalent Noise: Maximum Output: Dynamic Range: Maximum SPL: Signal/Noise Ratio: Externally polarised 1 pressuregradient condenser Unity-gain closed-loop impedance converter; vacuum-tube input with bi-polar buffering. Cardioid 200 ohms (100 ohms per leg) -38dB re 1V/Pa (12mV @ 94dB SPL) +/- 1dB 12dB SPL (A-weighted, per IEC268-15) +/-2dB >+29dBu @1kHz, 5% THD into 1Kohm load) >147dB (A-weighted, per IEC268-15) >158dB SPL @1kHz, 5% THD into 1Kohm load >82dB (A-weighted, per IEC268-15)
Frequency Response: 20 Hz ~ 20 kHz (+/-6dB)
External Power Supply: 100-120V / 200-240V (userselectable) 50Hz/60Hz, 25VA maximum. Packed Weight: Microphone Only: 4.53kg 760gm Dedicated Power Supply High strength heattreated steel mesh head Durable satin nickel nish Internal capsule shock mounting High level of RF rejection

FEATURES:

Large capsule with gold-plated membrane Ultra low noise Wide dynamic range Class A valve circuitry Hand-selected and graded twin-triode valve 6922

FREQUENCY RESPONSE

POLAR PATTERN

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Before using the NTK:
Ensure that your NTK has been set to the correct voltage as used in your country. The back panel of the NTK power supply has a microphone output socket, a ground (earth) lift, a microphone input socket, a voltage selector, and a mains power socket which also incorporates a fuse. (see 1.)
Earth Lift switch Microphone input Voltage selector

Microphone output

Mains power socket Mains fuse
The front panel of the power supply has the mains power on/off switch, and a blue LED (light-emitting diode) to indicate power status. The NTK can be used with mains supply voltages of between either 110-120V 50/60Hz, or 220-240V 50/60 Hz. To select for 100-110V use, set the Voltage Selector to 115V. (see 2.)
To select for 220-240V use, set the Voltage Selector to 230V. (see 2.) Note: on either voltage selection the mains fuse (inside the mains socket) is always to be a T500mA slow blow fuse. Having ensured that the power supply is now set to the correct voltage, you can begin to connect the NTK to its supply.

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NOTE: Do not have the power connected before the 7 pin multi-core microphone cable has been connected rst! Take the NTK Cable (supplied) and connect the male 7 pin plug to the 7 pin input socket on the back panel of the power supply. (see 3.)

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e e a et ct
Connect the other end of the cable (female 7pin plug) to the microphone. Ensure that both these plugs are correctly aligned and pushed rmly into their respective sockets. Now connect a microphone cable to the output socket of the power supply taking that output into your mixer/pre-amplier. We suggest you use a high quality microphone cable preferably with gold-plated contacts. Use as short a cable as is reasonable, as long cables can adversely affect sound quality. Ensure the cable is balanced and connected Pin 2+ Pin 3- and Pin 1 screen. Ensure that the NTK is xed securely (using the M2 stand mount, or optional SM2 shock mount) to a stable microphone stand. The NTK condenser microphone is a precision instrument, and should not be dropped, banged or knocked. Take care. Connect the power supply to the mains supply, and you are ready to switch on and begin using the NTK. When you switch on the unit, the blue LED on the power supply will not glow immediately, it will gradually glow brighter then stabilize. It is powered by the lament voltage in the NTKs valve, which takes a few seconds to warm up, so the LED is in fact not only an on/off indicator, it also shows when the microphone is stable and ready for use. Although power is normally achieved in approximately 12 seconds, it is wise to allow a minute or two to really ensure that the NTK is ready for use.

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For vocal use, we recommend the use of a Pop-Stopper wind screen, which will help to reduce high-level plosives which are evident when B and P sounds are emitted within close proximity to the microphone. If an Earth Loop is present, (a mains frequency hum), there is a Ground Lift switch on the back panel of the power supply which should be raised to the lift position. (see 4.) This earth loop can appear when two devices which are both earthed are connected together.

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NEVER REMOVE THE MAINS EARTH Doing so can have lethal consequences
ACHTUNG: LEBENSGEFAHR! ENTFERNE NIEMALS DEN SCHUTZLEITER
NON SCOLLEGATE IL FILO DI TERRA Potrebbe essere molto pericoloso per il rischio di scosse elettriche

RELIEZ IMPERATIVEMENT LALIMENTATION A LA PRISE TERRE sous risque mortel dlectrocution
NUNCA MANIPULE LA TOMA DE TIERRA, ESTA ACCION PUEDE TENER GRAVES CONSECUENCIAS

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NOTE: There are NO user-serviceable parts inside the Classic II 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 qualied electronic technician. DO NOT under any circumstance open the unit yourself. ACHTUNG: Das Classic II Netzteil enthlt keine Teile, die vom Benutzer repariert werden knnen. Gefahr: Das Gert enthlt spannungfhrende Bauteile! Fr Reparaturen suchen Sie bitte Ihren Hndler oder einen qualizierten Fachbetrieb auf. Auf keinen Fall drfen Sie selbst das Gehause offnen! NOTA: Allinterno dellalimentatore del Classic II NON ci sono parti riparabili dallutente ma ci sono invece tensioni pericolose! Se Ialimentatore non funziona correttamente dovete consultare il rivenditore presso il quale avete acquistato il microfono oppure un tecnico elettronico qualicato. NON APRITE in ogni caso Iunit in quanto pericoloso! AVERTISSEMENT: Nenlevez pas le capot de Ialimentation, sous risque dlctrocution. Si Ialimentation ne fonctionne pas correctement, consultez votre revendeur, ou un technicien quali. Vous ne devez sous aucun prtexte ouvrir Ialimentation vous-mme. NOTA: NO MANIPULE INTERNAMENTE LA FUENTE DE ALIMENTACION DEL RODE CLASSIC II, PUESTO QUE EL ALTO VOLTAJE PUEDE SER PERJUDICIAL EN CASO DE SUFRIR UNA DESCARGA. SI SE APRECIARA UN FUNCIONAMIENTO INCORRECTO DE LA FUENTE DE ALIMENTACION, DEBERA CONSULTARLO EN EL ESTABLECIMIENTO DONDE ADQUIRIO LA UNIDAD, SOLO PUEDE SER MANIPULADO POR UN SERVICIO TECNICO CUALIFICADO, BAJO NINGUNA CIRCUNSTANCIA ABRA VD. LA UNIDAD.

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Warranty Service: All products are warrantied for one year from your date of purchase and the warranty card or on-line registration (www.rodemicrophones.com) should be used to register your microphone. 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, modication, shippingdamage, or failure to use the microphone as per the instruction guide. If you experience any problems, or have any questions regarding your microphone, first, contact the Dealer who sold it to you. If you have any difficulty obtaining the advice or assistance you require, do not hesitate to contact us directly.

International: U.S.A.

Tel: Fax:

61-9333 61-9444

Tel: 4444 Fax: 4773 Australia: Tel: (02) Fax: (02) Technical Enquiries: peter@rode.com.au Sales Enquiries: colin@rode.com.au web site: www.rodemicrophones.com

interstage

Telefon 3946 0000, fax www.interstage.dk
Phistersvej 31, 2900 Hellerup, Danmark

- pro audio with a smile

Features:
Large capsule with gold-plated membrane Ultra low noise Wide dynamic range Class A valve circuitry Hand-selected and graded twin-triode valve Dedicated Power Supply High strength welded and heat-treated steel mesh head Durable satin nickel finish Internal capsule shock mounting High level of RF rejection
Accessories included: Power Supply 30(10m) Multicore Cable M2 Standmount plus 3/8-5/8 Thread Adaptor. Optional Extras: SM2 Shockmount
The NTK is a valve microphone designed exclusively for recording professionals who want what only the best can offer. The NTK has a large (1) capsule gold plated membrane, with twin triode valves hand graded and selected especially for use in the NTK. The NTK delivers the wide dynamic range, ultra low noise, and the quality and warmth demanded when choosing a valve microphone. NTK, when professional performance counts.

Specifications:

Capsule: Active Electronics: Externally polarised 1 pressure-gradient condenser Unity-gain closed-loop impedance converter; vacuum-tube input with bipolar buffering Pickup Pattern: Cardioid Frequency Response: 20Hz - 20kHz (+/-6dB) Output Impedance: 200 ohms (100 ohms per leg) Sensitivity: -38dB re 1V/Pa (12mV @ 94dB SPL) +/-1dB 12dB SPL (A-weighted per IEC268-15) +/-2dB Equivalent Noise: Maximum Output: > +29dBu (@ 1kHz, 5% THD into 1k( load) Dynamic Range: > 147dB (A-weighted, per IEC268-15) > 158dB SPL (@ 1kHz, 5% THD into 1k( load) Maximum SPL: Signal/Noise Ratio: > 82dB (A-weighted, per IEC268-15) External power supply: 100-120V / 200-240V AC (user selectable) 50Hz / 60Hz, 25VA maximum Packed Weight: 4.53 kg (Mic only 760 gm)
0 -5 -10 -15 -20 -21 -16 --6 -30

250 Hz 1 kHz 4 kHz

NTK Frequency Response

210 180

P R O U D LY M A D E I N A U S T R A L I A

Cardioid Polar Response

RDE MICROPHONES 5 Averill Street Rhodes NSW 2138 Australia Tel: Fax: www.rodemicrophones.com
All specifications are correct at the time of printing. RDE reserves the right to make changes without notice.