AKG CK 31 Cardioid Condenser Microphone capsule (modular)

The R?DE NT6 is specifically designed for difficult mounting applications. Although
clearly relevant to instrument mic'ing, the new NT6 is extremely well suited to any
situation where a small 'unobtrusive' but powerful microphone system is required.
The NT6 utilises the 1/2" (externally biased) gold sputtered true condenser transducer
used in the internationally renowned R?DE NT5. The capsule is designed to attach to
a custom made, multi-position swivel mount allowing it to be independently positioned
with ease.
To further increase the versatility of the NT6, it is supplied with 2 thread adaptors - 1/4"
to 5/8" and 1/4" to 3/8" that enable the capsule assembly to be securely attached to a
wide variety of mic stands, tripods and boom poles.
The capsule is connected to the pre-amplifier (body) by a custom 3 m Kevlar? fibre reinforced
cable. Housed within the heavy duty satin-nickel-plated body, is a state-of-the-art low noise
balanced output preamplifier, exhibiting a wide dynamic range and full frequency response.
The surface-mount pre-amplifier circuit also incorporates a 2-position variable pad: 0 dB an -10 dB
attenuation, and a 2-position variable high-pass filter that enables you to step from a flat response
to 80 Hz high pass filter; both conveniently located away from the capsule, providing additional
control without the need to move the capsule once in position.
The NT6 is intended for Film, Television, Broadcast, Live Performance, Theatre, Television,
Surround and Environmental recording applications or wherever your imagination takes you.
The NT6 is produced in R?DE's design and manufacturing facility in Sydney, Australia. Utilising
state of the art computer controlled machining and assembly technologies, R?DE is able to
achieve levels of finish and repeatability of the most exacting standards and tolerances.
The NT6 comes supplied with Microphone Preamp (Body), Capsule, 3 m Kevlar? fibre reinforced
cable, RM5 Stand Mount, 2-axis Swivel Mount, 2 thread adaptors, ZP1 Zip Pouch and WS5 Wind Shield.
 
FEATURES:
? 1/2? (externally biased) gold sputtered true condenser capsule ? Heavy duty satin-nickel-plated body
? 2-position variable pad: 0 dB and -10 dB ? 2-position variable high-pass filter: flat and 80 Hz ? Surface
mount technology ? Low noise ? Wide dynamic range ? Full frequency response ? Supplied complete
with 2-axis swivel mount, 2 thread adaptors, M5 clip, WS5 (Black) Wind Shield and Soft Pouch ? Designed
& manufactured in Australia ? Full 2 year guarantee 
 
Operation power:
The NT6 is designed to operate from phantom power to the P48 standard. The NT6 will operate
between 44V and 52V applied with positive polarity to pin 2 and pin 3 of the output XLR connector. 
Operation output impedance:
Output Impedance: The NT6 will operate satisfactorily into a load impedance as low as 1 kΩ. If a
load below this is used, the output signal level will be reduced. The NT6 output is balanced between
pin 2 (hot) and pin 3 (cold). Pin 1 is ground.
 Acoustic principle:
Externally polarised 1/2" (13mm) pressure gradient condenser
Directional pattern:  Cardioid
Frequency range:
40 Hz ~ 20,000 Hz selectable HPF @ 80 Hz/12 dB/octave
Output impedance: 200 Ω
Signal noise ratio din iec 651:
75 dB (1 kHz rel 1 Pa; per IEC651, IEC268-15)
Equvalent noise: 19 dB SPL (per IEC651, IEC268-15)
Maximum spl:
138 dB (@ 1% THD into 1 kΩ)148 dB (@ 1% THD into 1 kΩ) - pad at maximum
Sensitivity:
-38 dB re 1 Volt/Pascal (16 mV @ 94 dB SPL) +/- 2 dB
Dynamic range din iec 651: 119 dB (per IEC651, IEC268-15)
Power supply voltage: 48 Volts (P48)
Weight: 386 grm.
Maximum output voltage: 6 dBu (@ 1% THD into 1 kΩ)
Pin assignment:
3 pin XLR, balanced output between pin 2(+), pin (-) & pin 1 (ground)
 

Transformerless Power/Output Module ? The SE 300 B is used with all AKG Blue Line capsules and operates from 9 ? 52 V phantom power. The 3-position switch allows selection of linear response, -10 dB preattenuation and 12-dB-per-octave 75 Hz low-cut filter. A stand adapter is included.

Specifications

Polar pattern: hypercardioid/directional
Frequency range: 20?20,000 Hz
Sensitivity: 25 mV/Pa (-32 dBV)
Max. SPL for 1 % THD: 124/134 dB
Equivalent noise level: 17 dB-A
Signal/noise ratio (A weighted): 77 dB
Preattenuation pad: -10 dB, switchable Bass cut filter: 12 dB/octave at 75 Hz
Electrical impedance: 200 Ohms
Recommended load impedance: >1,000 Ohms
Power requirement: 9 to 52 V phantom power to DIN 45 596
Current consumption:

The super-cardioid e 614 is a permantly polarized condenser microphone
designed for demanding applications which require a wide frequency response,
high SPL, fast transient response and a compact design.  With its frequency
response of 40 Hz to 20 kHz, the e 614 is able to capture the full sound of the
instrument, while its super-cardioid pick-up pattern isolates the microphone
from other on-stage signals. 
An excellent microphone for percussion instruments, the e 614 is also an ideal
choice for woodwind and string instruments.  Its excellent acoustic properties
also make it a valuable tool for home recording.

Features
Rugged design Effective rejection of incidental rear noise Excellent directivity
across the whole frequency range Full, natural sound High maximum sound
pressure level
Wide frequency response
Delivery Includes
Microphone pouch
Microphone clip MZQ 100

Technical Data
Frequency response  40 Hz ... 20 kHz 
Transducer principle  permanently polarized condenser 
Pick-up pattern  supercardioid 
Sensitivity in free field, no load (1kHz)  3 mV/Pa = - 50dB (0 dB = 1 V/Pa) 
Nominal impedance  50 Ohm 
Min. terminating impedance  1 kOhm 
Maximum sound pressure level (passiv)  139 dB/SPL 
Equivalent noise level  24 dB(A) 
Equivalent noise level weighted as per CCIR 468-3  35 dB 
Dimensions  ? 20mm, L = 100mm 
Weight w/o cable  93 g