The KU4 is AEA's interpretation of the legendary RCA KU3A, which is now a collector's item and regarded as one of the best ribbon mics ever. (The KU3A was originally made by RCA for the movie studios and less than 600 were made. It is known to have a very wide smooth response). The supercardiod pattern of the KU4 helps to reduce room reflections and the lack of proximity induced bass boost makes it a perfect choice for close miking.
FEATURES:
• 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
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
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