MICROPHONE SPHERICAL SURFACE FIXTURE MF710/MF720
Model	MF720	MF710
No. of Microphone Positions	20	10
Standards	ISO3745-2003	ISO7779, GB6882-88; ISO3475-1982
Radius (microphone positions) （m）	1.0	1.0
Microphone Size to be Fixed on (inch)	1/2	1/2
Carrying Case (mm)	1500 * 350 * 200	1500 * 350 * 200
Weight (kg)	11	10
OPTIONAL ITEMS
MPA231 (1/2” ICCP Microphones)	20	10
CBB 020 (20m BNC cables)	20	10

In the measurement of sound power level according to ISO 3745-2003, 20 measurement positions are required on a spherical measurement surface enveloping a noise source in anechoic and hemi-anechoic room.  However, it is difficult to mount 20 microphones on tripods in a spherical surface.

BSWA developed MF720 (and MF710) microphone fixture specifically for such measurements.  MF720 is designed according to ISO 3745-2003 to mount 20 microphones over the spherical surface; MF710 is a 10 positions version according to ISO3745; ISO7779 and GB6882.

MF720/ MF710 features:

• 20 / 10 microphone positions

• The position and orientation of each microphone can be adjusted to fit the amendment of the ISO standards

• Portable with light weight and the parts can be disassembled for easy transportation