AKG Acoustics Microphone D 58E User Manual

D 58E/D 58E Black  
Noise Cancelling Dynamic Microphone  
Description  
This noise cancelling microphone is a gradient model  
which has its diaphragm assembly tuned to a mid-range  
frequency. As such, the D 58 E will give fairly flat response to  
near sources (due to proximity effect rise at low frequencies)  
while exhibiting a strong mid frequency and bass roll-off for  
sounds arriving from a distance. It is necessary that the  
microphone be addressed at distances no greater than about  
2 inches (5 cm) for the speakers voice to be clear and  
natural. The microphone is quite small and can thus be used  
at very short working distances without disturbing the user.  
In addition, the close-in response of the microphone  
exhibits a broad rise in the mid-range between 1 and 5 kHz  
in order to improve speech intelligibility when the microphone  
is used in noisy environments. The D 58 E is rugged,  
lightweight, and operates well over a wide range of both  
temperature and humidity.  
The Model D 58 E Black is the same as the D 58 E except  
for a black finish.  
Specifications  
Transducer type:  
Dynamic pressure gradient  
Frequency response 70 Hz to 10 kHz, 3 dB  
Polar pattern: Hypercardioid  
Features  
Impedance at 1 kHz: 240 ohms  
Recommended load impedance: Greater than 500 ohms  
• High rejection of distant sound  
sources  
• Hypercardioid pattern for pickup of  
near sources within 2” (5 cm)  
Sensitivity:  
Sound pressure level for 1% THD: 130 dB (50 Pa)  
Hum sensitivity: -131 dBm (1 mG field)  
0.72 mV/Pa; -63 dB (re 1 V)  
Environmental operating range:  
Temperature: 14° F to 140° F (-10°C to + 60°C)  
Maximum relative humidity: 90%  
• Unusually compact and lightweight  
Size:  
0.8(20 mm) diameter  
1.6(42 mm) length  
Materials:  
Case: nickel-plated bronze;  
Sound Entry: sintered bronze screen  
and wire mesh grille  
Net weight:  
1.4 oz. (40 g)  
5.3 oz. (150 g)  
Shipping weight:  
Optional accessory: W 32 windscreen  
 

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