Sanken Microphone Company, Ltd. CU-41
Cardioid Condenser Microphone
The CU-41 is a unique dual-capsule condenser microphone designed for accurate and neutral sound reproduction. It was developed by Sanken and NHK, the Japanese Broadcasting Corporation, between 1979 and 1982.
The mic is one of a very few “two-way” condensers ever made. It has two separate capsules, each optimized for different frequency ranges. A small-diameter capsule, mounted near the top of the headbasket, picks up high-frequency information, while a large-diaphragm capsule carries low to mid frequencies. The output of the two capsules is mixed into a single mono output with a flat and extended frequency response. The crossover point is at 1kHz.
Detailed capsule size specifications are not available at this time, although Sanken has published a description of the diaphragms: both are 1-micron titanium. This composition makes the mic less susceptible to sonic changes due to temperature, humidity, or corrosion over time.
Both capsules are edge-terminated.
The mic has a transformer-coupled output circuit. (The CU-44X is essentially a transformerless version of the CU-41.)
The mic’s frequency response is described as “totally flat” by Sanken. The published plot shows approximately 2dB of variation from 20Hz to 22kHz, a smooth dip of -5dB centered at 35Hz, and a slight rise beyond that.
The CU-41 has a satin nickel finish. It ships with an elastic shockmount (Sanken p/n S-41) and a storage pouch. An optional aluminum flightcase (p/n TC-41) holds two CU-41 mics with a pair of S-41 shockmounts.
Note that the CU-41 cannot be disassembled without a special tool.
The Sanken Microphone Company, Ltd. CU-41 is also known as: CU41.
The mic was released in 1982.
Specifications
Frequency Response - CardioidClick Graph to Compare! |
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Pickup Patterns | Pads & Filters |
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Cardioid
(7 mV/Pa; 20 - 30,000 Hz) |
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Capsule Dimensions | Impedance | SPL/Noise |
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Diameter n/a Diaphragm gauge: 1 microns |
150 Ohms (Low) | Max SPL: 140 dB Self-noise: 15.0 dB(A) |
Weight | Length | Max Diameter | Interface(s) |
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600g (21.16oz) | 187mm (7.36'') | 50mm (1.97'') |
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Power Specifications |
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