AKG D 770 - Manual
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D 770
Dynamic Microphone
Description
The AKG Model D 770 is a rugged dynamic cardioid
microphone intended for on-stage vocal and instrumental
pickup. Its cardioid pattern is uniform with frequency, and
response has been boosted at mid and high frequencies for
crisp instrumental pickup and improved speech intelligibility.
The microphone has a heavy duty, dent resistant spring-steel
windscreen with an integral pop filter for effective
suppression of breath noise. The microphone incorporates
two important AKG developments: In the “Tiefzieh”
Varimotion System™ the diaphragm thickness varies from
20 microns at the edge to 40 microns at the center. This
distribution of mass produces extended bass response,
virtually eliminating the need for a tuning resonator. In
addition, the Doubleflex™ mounting system used with the
capsule assembly places the primary resonance of the
moving system to well below the audible range, resulting in
excellent isolation of handling and cable induced noises. The
light-weight body is die cast zinc alloy and has a dark matte
finish for minimum reflection and glare.
Features
• Response tailored for vocal and
instrumental on-stage performance
• Frequency independent cardioid
pattern for added immunity to
feedback
• Very low handling noise through
use of AKG’s Doubleflex™ anti-
vibration isolation system
• High sensitivity (2.5 mV/Pa)
resulting from use of high-energy
neodymium-iron-boron magnet
• Light-weight die cast metal body
with dark matte finish
• Spring-steel dent resistant
windscreen
Specifications
Transducer type:
Dynamic pressure gradient
Frequency response:
60 - 20 kHz (20 - 20 kHz @ 1 cm)
Polar pattern:
Cardioid
Impedance:
<600 ohms
Recommended load impedance:
>2000 ohms
Output connector:
XLR-M
Sensitivity: 2.5
mV/Pa; -75 dB (re 1 V/Pa)
Sound pressure level for 1% (3%) THD:
147 dB SPL (156 dB SPL)
Size:
Maximum diameter: 2 in. (50 mm)
7.1 in. length (180 mm)
Net weight:
10.4 oz. (295 g)
Shipping weight:
1.3 lbs. (600 g)
Accessories included:
SA 44 Stand adapter
Mic bag, blue nylon with rugged zipper
Optional accessories:
SA 26, SA 41/1 Stand adapter
ST 305 Table stands
W 23 Foam windscreen
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