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Summary of Contents for AEA KU4
- Page 1 AEA KU4 OWNER’S MANUAL CLASSIC SUPERCARDIOID RIBBON MIC...
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Page 2: Welcome
AEA family! Unless you have used an original RCA KU3A (also known by its manufacturing number M-10001), the AEA KU4 is unlike any ribbon microphone you have ever experienced. This is due, in part, to its unique supercardioid polar pattern and character. -
Page 3: Table Of Contents
CONTENTS WELCOME INTRODUCTION SUPPORT GENERAL GUIDELINES APPLICATION ADVICE SPECIFICATIONS... -
Page 4: Introduction
INTRODUCTION The KU4 is a side-address ribbon microphone with a supercardioid pickup pattern. The reduced rear-lobe of the supercardioid pattern means that, compared to a conventional bi-directional ribbon microphone, the KU4 will have less pickup of ambient sound from the rear. This makes it much easier to use in situations where isolation between instruments is important or under less than ideal acoustics. -
Page 5: General Guidelines
KU4 microphone with phantom power. However, passive ribbons such as the KU4 can be damaged if ground (Pin 1) is accidently shorted, miswired, or hot patched in a patch bay to (Pin 2) or (Pin 3). Using phantom power with a faulty or miswired cable or a defective supply can severely stretch or break a ribbon. - Page 6 Though the ribbon in your KU4 is protected by a grille and acoustical fabric, which provides reasonable wind protection while still allowing good high-end response, take care to avoid high-wind outdoor environments.
- Page 7 MICROPHONE POSITIONING Always use a sturdy microphone stand with the KU4. Weighing in at around 5lbs, the KU4 requires mounting on a strong, robust microphone stand with a heavy base or tripod. Large studio-booms with an appropriate counter-weight are recommended to prevent your KU4 from tipping-over and crashing, causing injury to itself, a musician, or a valuable musical instrument.
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Page 8: Application Advice
AEAribbonmics.com We actively encourage users to visit access our comprehensive collection of in-depth articles and tutorials featuring the KU4, along with a library of audio and video demonstrations of the KU4 in action. PROXIMITY EFFECT (graph is a visualization, not a measurement) Proximity effect, a characteristic of all directional microphones, is a rise in low-frequency response at closer working distances. - Page 9 SUPERCARDIOID DIRECTIONALITY Because the KU4 has a supercardioid pattern, it has nulls at approximately ± 135° from the principal (front) axis. Projected in three dimensions, these nulls produce a “cone of rejection” to the rear of the microphone that can be used effectively to reduce leakage.
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Page 10: Specifications
SPECIFICATIONS Pressure gradient transducer Operating Principle: Supercardioid Directional Pattern: <30 Hz to >20 kHz Frequency Range: 140+ dB SPL above 200 Hz for 1% third harmonic Maximum SPL: -52dBV (2.5 mV/Pa) (at 1 kHz into unloaded circuit) Sensitivity: 300 Ω nominal Output Impedance: 1.5 kΩ... - Page 11 POLAR PATTERN • Data below 200 Hz omitted due to measuring room restrictions • 0 dVB is equivalent to 2.5 mV/Pa (-52 dBV) • Normalized to 0 dB at 1kHz. 1/3 octave smoothing...
- Page 12 AEARIBBONMICS.COM | @RIBBONMICS | INFO@RIBBONMICS.COM | (800) 798-9127...
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