Geo s830 curves, On axis response (db), Impedance (ohms) – Nexo GEO S8 User Manual

Page 31: Technical specifications p.31, Off axis response flange 80° (db), Thd + n (%), Off axis response flange 120° (db), Coverage angle (degree), Q & di, Impedance in ohms

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TECHNICAL

SPECIFICATIONS

P.31

GEO S830 curves

30

100

1k

10k

20k

−30

−20

−10

0

10

ON AXIS RESPONSE (dB)

On Axis response in dB. From dark to light: set up ‘wide range’, ‘CD12 stacked’ and
‘CD12 flown’.

30

100

1k

10k

20k

8

16

32

64

IMPEDANCE (Ohms)

Impedance in Ohms.

100

1k

10k

20k

−20

−10

0

10

OFF AXIS RESPONSE Flange 80° (dB)

Off axis response in dB in the non-coupling plane flange 80°.
Dark to light: 0°, 10°, 20°, 30° and 40° off axis.

100

1k

10k

20k

0.1%

1%

10%

THD + N (%)

Total harmonic distortion + noise in percentage. Level = 110dB @ 1m.

100

1k

10k

20k

−20

−10

0

10

OFF AXIS RESPONSE Flange 120° (dB)

Off axis response in dB in the non-coupling plane flange 120°.
From dark to light: 0°, 15°, 30°, 45° and 60° off axis.

30

210

60

240

90

270

120

300

150

330

180

0

2500Hz

30

210

60

240

90

270

120

300

150

330

180

0

30

210

60

240

90

270

120

300

150

330

180

0

30

210

60

240

90

270

120

300

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330

180

0

5000 Hz

30

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60

240

90

270

120

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150

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180

0

30

210

60

240

90

270

120

300

150

330

180

0

100

1k

10k

20k

10˚

100˚

200˚

COVERAGE ANGLE (Degree)

Total coverage @-6dB in the coupling plane in degrees.
From dark to light: 1, 2 and 4 boxes.

10000 Hz

30

210

60

240

90

270

120

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180

0

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240

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0

30

210

60

240

90

270

120

300

150

330

180

0


Flange 80° (dark) and flange 120° (light) polar
plot in the non-coupling plane. 3dB/division.

100

1k

10k

20˚

100˚

200˚

COVERAGE ANGLE (Degree)

Total coverage @-6dB in the non-coupling plane in degrees: flange
80° (dark) and flange 120 (light).

100

1k

10k

20k

0

10

20

Q & DI

1

10

100

Directivity Index in dB (Left hand side scale) and directivity factor
(Right hand side scale) for flange 120° (dark) and flange 80° (light).


All measurements made with dedicated NX program.
Measurements conditions: far field, half space below 400Hz; anechoic above 400Hz.
Directivity Index and factor: computer synthesized from coverage. Coverage 1/3rd octave
band synthesized from FFT measurements.

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