Shure KSM8 Dualdyne User Manual page 5

Applications
The KSM8 Dualdyne is designed to excel as a vocal microphone while withstanding the punishment
of professional live sound reinforcement, but can be used to capture other sources as well. For
information on microphone use and applications or for a more comprehensive look at the technology
behind the microphone, visit www.shure.com for educational publications on these topics and more:
• Microphone techniques for live sound reinforcement
• Microphone techniques for recording
• Proximity effect
The Shure Dualdyne™ Cartridge
The KSM8 Dualdyne™ Cartridge utilizes a reversed side entry airflow system. Sound enters the
microphone via the side entry inlets and passes through the rear second diaphragm before striking
the front diaphragm. By using the second diaphragm in the resistance network low frequencies are
partially blocked from entering the cartridge resulting in a natural, low-end response with controlled
proximity effect and no loss in clarity.
Front Diaphragm
Magnet
Rear Diaphragm
Cavity 2
Dualdyne cartridge side view
Dualdyne™ Benefits
The unique design of the Shure Dualdyne™
cartridge provides several benefits over
traditional single-diaphragm dynamic
microphones:
Sound Channels
Cavity 1
Side Entry Sound Inlet
Reduced Proximity Effect
With traditional microphones, low-frequency
response increases as the performer moves
closer to the microphone. A strong presence
peak centered around 4 to 5 kHz is used to
counteract the increased bass.
The dual-diaphragm microphone greatly
reduces the proximity effect, and low-frequency
response remains consistent with distance. This
delivers a more natural response throughout the
vocal range, eliminating the need for a strong
presence peak.
10
0
-10
20
100
single diaphragm
Single vs. Dual-diaphragm frequency response
3
1k 10k
Hz
dual-diaphragm
20k