STUDIO PROJECTS C4 CONDESER STEREO PAIR MICROPHONES

The C4 is small diaphragm condenser microphone featuring interchangeable capsules,
switchable -10dB pad/high pass filter and a linear low-noise, solid state amplifier body.
The microphone?s modularity makes it a useful multi-purpose tool intended for all-around
use on stage, on location and in studios of all caliber.
As a cardioid (pressure gradient) microphone, the C4 provides excellent pickup of on-axis
sources while attenuating extraneous sound occurring from around and behind the mic.
This makes it ideal for close miking of individual instruments where bleed from other nearby
instruments or sound is undesirable. The C4 cardioids also make excellent stereo pairs for
coincident and near-coincident miking techniques such as X-Y and ORTF. Additionally the
C4?s are quite useful on a drum kit as overheads and on toms.
Used as an omni-directional (pressure) microphone, the C4 offers a warm tonal response
and is recommended especially for close miking in favorable acoustical environments. There
is very little off axis coloration owing to the inherent physical properties of pressure capsules,
and it is this - combined with the low self-noise of the microphone amplifier that makes the
C4 omni an excellent ambience mic ?especially in pairs. In a good room, a pair of omni?s
can provide a vibrant and live feel to recordings, which is not achievable through the use of
directional microphones.
Recommended uses are, spaced pair omni, Jecklin disc (OSS), piano, guitar, drum overheads
and room miking. The C4 is available in pairs with shockmounts, windscreens and case.

Features:
Studio Quality Stereo Pair Microphone System
Modular Design
Interchangeable Capsules (Omni, Cardioid)
Switchable -10dB pad/ High Pass Filter
Transformerless Output
Rugged Construction

Applications:
Coincident, Near Coincident Pair
Spaced Pair Omnis
Location Use
Spot Miking For Instruments
Ambient Recording
Drum Overheads

Included Accessories:
Shock Mount Adapter
Foam Windscreen
Pair of Cardioid Heads
Pair of Omni Heads
Case

Technical Description
Type: Single diaphragm modular FET condenser microphone
Polar Pattern: Cardioid (CC1) Omni-directional (OC1)
Frequency Response: 40Hz.~20kHz
Sensitivity: 12m V/Pa. where 1 pa = 94dB SPL
Output Impedance: 1200 Ohm
Max SPL: 150 dB SPL with -10dB pad
Equivalent Noise: 16 DB SPL, (A-weighted per IEC268-15)
S/N Ratio: 78 dB
Power Requirement: P48 +/-4V
Current Consumption:

K2 - ?It cant be done?? Precision Variable Pattern Dual 1? Condenser Valve Microphone.
 
The R?DE K2 is the result of designing and building 1000?s of valve microphones. The
K2?s HF-1 capsule is the pinnacle of transducer technology. The sound quality combines
modern high-end specifications with the character and subtleties of the legendary 50?s mics.
Infinitely variable control of the K2?s polar patterns provides the freedom and flexibility to
excel in any recording situation. The K2 is another example of R?DE?s commitment to
building quality studio microphones to meet the exacting standards demanded by today?s
professionals.At the 2004 Frankfurt Music Messa, 56 of the most prestgious music industry
magazines voted the K2 the ?Best Studio Microphone of 2004?.

SPECIFICATIONS:
Features:
? New large capsule with gold sputtered diaphragm. ? Ultra low noise.
? Wide dynamic range. ? Class ?A? valve circuitry. ? Hand-selected and
graded 6922 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. ? Supplied
complete with SM2 Shock Mount and RC2 Custom Carry Case.
? Continuously variable polar patterns. From omni, through cardiod to
figure 8, controlled at the power supply.
Operation power:
The K2 is designed to operate from a dedicated power supply (110 - 120 V/220 - 240 V, 50/60 Hz)
Acoustic principle: Externally polarized 25 mm(1?) condenser.
Directional pattern:
Continuously variable multi pattern -Omni, through Cardioid to figure 8.
Frequency range:  20 Hz - 20 kHz
Output impedance:
Valve impedence converter with bipolar output buffer.
Signal noise ratio din iec 651:
 > 81 dB (1kHz relative to 1 Pa; per IEC651,IEC268-15).
Equvalent noise:  10 dBA SPL (per IEC651, IEC268-15).
Maximum spl: 162 dB (@ 1% THD into 1k).
Sensitivity:
 -36 dB re 1 Volt/Pascal (16 mV @ 94 dB SPL) +/- 2 dB.
Power supply voltage:
Dedicated Power Supply(110 - 120 V/220 - 240 V, 50/60 Hz).
Weight:  815 gms
Dimensions width:  208.5 mm
Dimensions depth:  55 mm
Dimensions height:  55 mm
Maximum output voltage:  > +30 dBu (@ 1% THD into 1 k).

• Large 1" (25mm) capsule with gold plated diaphragm
• Cardioid polar pattern
• Self noise of only 5dB (A)
• Ultra low noise, transformerless surface mount circuitry
• Wide dynamic range
• Gold plated output contacts
• True condenser (externally biased)
• Internal capsule shock mounting

KSM44A Multi-Pattern Dual Diaphragm Microphone Premium microphone with three polar pattern options (cardioid, omnidirectional, bidirectional).

Features

• Prethos® Advanced Preamplifier Technology: Class A, discrete, transformerless preamplifier provides  transparency, extremely fast transient response and no crossover distortion. Minimizes harmonic and intermodulation distortions.  
• Groundbreaking specifications: 4dB of self-noise and max SPL of 131 dB for a total dynamic range of 127 dB – an increase of 7 dB that defines the new standard for cleanly nuanced audio capture
• Multiple polar patterns–cardioid, omnidirectional and bidirectional–for maximum flexibility in a wide variety of recording applications
• Dual 1 inch, externally biased, ultra-thin, 2.5 μm, 24 Karat gold-layered, low mass diaphragms provide superior frequency response
• Premium electronic components and gold-plated internal and external connectors
• Subsonic filter eliminates rumble from mechanical vibration below 17 Hz.
• Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
• 3-position switchable low-frequency filter helps reduce unwanted stand vibration noise or counteract proximity effect
• Integrated three-stage "pop” protection grille reduces plosives and other breath noise
  
  

  Type	Condenser (externally biased)
  Frequency Response	20 to 20,000 Hz
  Polar Pattern	Cardioid, Omnidirectional, Bidirectional
  lmpedance	50 ohms
  Phantom power required?	11–52 V DC phantom power (IEC-61938) 5.8 mA, maximum