Bosch LB3-PC250 User Manual download pdf (Page 5)

6 en LB3-PC250 / LB3-PC350

IN-LB3 | V1.0 | 2011.02 Bosch Security Systems B.V.

Technical data

LB3-PC250 - Octave and 1/3 octave related measure results

Table 1 Octave band opening angles

Table 2 Octave band sensitivity of 250 W / 100 V-tap

Table 3 Total octave SPL

Octave band opening

Frequency (Hz) 125 250 500 1000 2000 4000 8000

Horizontal opening angle 360 183 152 100 77 87 86

Vertical opening angle 360 180 162 70 66 44 32

Octave band sensitivity

Frequency (Hz) 125 250 500 1000 2000 4000 8000

Octave SPL 1 W / 1 m 92.8 93.3 93.6 94.7 97.0 96.8 98.0

Total octave SPL A-weighted (in dBSPL) C-weighted (in dBSPL)

Total octave SPL 1 W / 1 m 93.7 95.1

Total octave SPL Pmax / 1 m 117.7 119.1

LB3-PC250 - Frequency and impedance graphs

Frequency response on 0-degrees axis measured with 1 W at 1 m.

Connected to 250 W/100 V-tap and measured with 1/3 octave smoothing.

Frequency

dB SPL

10 0

11 0

1 0 10 0 1 0 0 0 1 0 0 0 0 10 0 0 0 0

1 2 3 4 5 6 7 8 9

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Bosch LB3-PC250 User Manual Page 5