Microphones > AEA KU4

AEA KU4

AEA KU4

$5,999.00

The KU4 is unmistakably a ribbon microphone, with a characteristically smooth ribbon sound. Like other ribbons, its lightly-tensioned, ultra low mass ribbon has a frequency response beyond 20 kHz, an accurate transient response, and no upper midrange resonances common to large condenser mics.

However, having a supercardioid instead of a figure-eight polar response pattern mics sets it apart from other ribbon mics. The KU4’s suppressed rear lobe reduces the pickup of room ambience and is especially useful when the rear of a figure-eight pattern would pick up undesirable sounds. The KU4’s reduced bass proximity effect facilitates closer micing while its low-tuned ribbon will not exhibit bass distortion. These characteristics make the KU4 well-suited for modern studio production.

The KU4 is unmistakably a ribbon microphone, with a characteristically smooth ribbon sound. Like other ribbons, its lightly-tensioned, ultra low mass ribbon has a frequency response beyond 20 kHz, an accurate transient response, and no upper midrange resonances common to large condenser mics.

However, having a supercardioid instead of a figure-eight polar response pattern mics sets it apart from other ribbon mics. The KU4’s suppressed rear lobe reduces the pickup of room ambience and is especially useful when the rear of a figure-eight pattern would pick up undesirable sounds. The KU4’s reduced bass proximity effect facilitates closer micing while its low-tuned ribbon will not exhibit bass distortion. These characteristics make the KU4 well-suited for modern studio production.

Additional Information

The AEA KU4 celebrates the legendary RCA unidirectional KU3A, a high sensitivity microphone designed for the Hollywood movie studios.   Also known as a M-10001 for its manufacturing number, it was RCA’s most expensive ribbon microphone.  Fewer than 600 were ever manufactured.

What made the KU3A special?  It combined the smooth ribbon sound of a 44 with a unidirectional pattern, a wide sweet spot and less proximity bass boost.  It expanded an engineer’s range of placement choices and became a standard at film studios around the world.

Although condenser mics became the new standard by the end of the 1960s, ribbon mics are still appreciated today by experienced music recording engineers. However the KU3A is a rare microphone, a collector’s item, and few studios or rental houses own them.  Opportunities to work with a good KU3A are limited.

We are proud to expand your opportunities with the AEA KU4 featuring an RCA ribbon, interchangeable KU3A parts and consistent performance.

Features
• Contemporary realization of the RCA KU3A classic
• Supercardioid pattern for excellent rear rejection
• Reduced proximity effect
• Smooth, high-bandwidth frequency response
• Authentic New Old Stock RCA ribbon material
• High-quality anodized & nickel-plated finish
• Custom AEA transformer, neodymium magnets
• Consistent Quality
• Field-tech replaceable ribbon assembly
• Hand-crafted in Pasadena, California

How is the KU4 different from other ribbon microphones?
The KU4’s suppressed rear lobe is useful when the back of a figure-of-eight would pick up undesirable sounds. The KU4’s reduced proximity bass boost facilitates closer micing and its low-tuned ribbon delivers solid, undistorted bass. These characteristics make the KU4 well suited for modern studio production.

 

DirectivityFrequency

Specifications

Operating Principle: Velocity microphone
Frequency Response: Below 30 Hz to above 20 kHz
Maximum SPL: 140 + dB SPL above 200Hz for 1% third harmonic
Output Sensitivity: 2.8 mV/Pa into unloaded circuit
Output Impedance: 300 Ω nominal
Recommended Load: 1.2 KΩ or greater
Phantom power: Not required or recommended.
Polarity: Pin 2 high for positive pressure at the front of the microphone.
Connector: XLR-3M wired to a 1.5-meter captive cable

Off Axis Response
Polar Pattern: Supercardioid
Relative Output at 180° (dB): -12
Angle of Maximum Rejection: 135°

Transducer element
Ribbon Thickness: 1.8 microns ( .0000018 meter ) of pure aluminum
Ribbon Width: 0.082” (2.1 mm)
Ribbon Length: 1.25” (28.6 mm)

Accessories
Included: Custom storage/shipping case, stand adapter, manual and attached 1.5-meter microphone cable

CONDITION New
PACKAGE CONTENTS Case, stand adapter, mic cable
LENGTH 12.7 in
DIAMETER 3.8 in
UNIT WEIGHT 7 lb
TUBE OR SOLID STATE Solid State
TRANSDUCER TYPE Ribbon
POLAR PATTERN Super-Cardioid
NUMBER OF MICROPHONES Single Microphone
IMPEDANCE Nominal: 300 Ohms
FREQUENCY RANGE 30 Hz – 20 kHz
SENSITIVITY -51 dBV/Pa (2.8 mV) into unloaded circuit
MAX. SPL 140+ dB (1% third harmonic > 1 kHz)

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The AEA KU4 celebrates the legendary RCA unidirectional KU3A, a high sensitivity microphone designed for the Hollywood movie studios.   Also known as a M-10001 for its manufacturing number, it was RCA’s most expensive ribbon microphone.  Fewer than 600 were ever manufactured.

What made the KU3A special?  It combined the smooth ribbon sound of a 44 with a unidirectional pattern, a wide sweet spot and less proximity bass boost.  It expanded an engineer’s range of placement choices and became a standard at film studios around the world.

Although condenser mics became the new standard by the end of the 1960s, ribbon mics are still appreciated today by experienced music recording engineers. However the KU3A is a rare microphone, a collector’s item, and few studios or rental houses own them.  Opportunities to work with a good KU3A are limited.

We are proud to expand your opportunities with the AEA KU4 featuring an RCA ribbon, interchangeable KU3A parts and consistent performance.

Features
• Contemporary realization of the RCA KU3A classic
• Supercardioid pattern for excellent rear rejection
• Reduced proximity effect
• Smooth, high-bandwidth frequency response
• Authentic New Old Stock RCA ribbon material
• High-quality anodized & nickel-plated finish
• Custom AEA transformer, neodymium magnets
• Consistent Quality
• Field-tech replaceable ribbon assembly
• Hand-crafted in Pasadena, California

How is the KU4 different from other ribbon microphones?
The KU4’s suppressed rear lobe is useful when the back of a figure-of-eight would pick up undesirable sounds. The KU4’s reduced proximity bass boost facilitates closer micing and its low-tuned ribbon delivers solid, undistorted bass. These characteristics make the KU4 well suited for modern studio production.

 

DirectivityFrequency

Specifications

Operating Principle: Velocity microphone
Frequency Response: Below 30 Hz to above 20 kHz
Maximum SPL: 140 + dB SPL above 200Hz for 1% third harmonic
Output Sensitivity: 2.8 mV/Pa into unloaded circuit
Output Impedance: 300 Ω nominal
Recommended Load: 1.2 KΩ or greater
Phantom power: Not required or recommended.
Polarity: Pin 2 high for positive pressure at the front of the microphone.
Connector: XLR-3M wired to a 1.5-meter captive cable

Off Axis Response
Polar Pattern: Supercardioid
Relative Output at 180° (dB): -12
Angle of Maximum Rejection: 135°

Transducer element
Ribbon Thickness: 1.8 microns ( .0000018 meter ) of pure aluminum
Ribbon Width: 0.082” (2.1 mm)
Ribbon Length: 1.25” (28.6 mm)

Accessories
Included: Custom storage/shipping case, stand adapter, manual and attached 1.5-meter microphone cable

CONDITION New
PACKAGE CONTENTS Case, stand adapter, mic cable
LENGTH 12.7 in
DIAMETER 3.8 in
UNIT WEIGHT 7 lb
TUBE OR SOLID STATE Solid State
TRANSDUCER TYPE Ribbon
POLAR PATTERN Super-Cardioid
NUMBER OF MICROPHONES Single Microphone
IMPEDANCE Nominal: 300 Ohms
FREQUENCY RANGE 30 Hz – 20 kHz
SENSITIVITY -51 dBV/Pa (2.8 mV) into unloaded circuit
MAX. SPL 140+ dB (1% third harmonic > 1 kHz)

Reviews

There are no reviews yet.

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