Bose 802 C II Manual de serviço - Página 10

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4.4 Apply a 100Hz, 500mVrms signal to

the input of the 802C.

4.5 Reference a dB meter to the 302 AMP

output jacks (while in the Bi-Amp mode).

4.6 Refer to the frequency response table

below and verify the response of the unit.

302 Bi-Amp Frequency Response Table

Frequency

Output

55Hz

+3.7dB

100Hz

0dB

(reference)

230Hz

-8.3dB

750Hz

-25.8dB

5. Distortion Test

Note: Total harmonic distortion must be

measured in all modes to assure proper

operation.

5.1 Apply a 750Hz, 5Vrms signal to the

input of the 802C.

5.2 Refer to the table below for the distor-

tion specification for the corresponding

mode being tested.

Note: For the Bi-Amp 302 reading the

input signal should be a 100Hz, 5Vrms

signal.

Distortion Table

Output

Frequency. Distortion

802 Full

750Hz

Range

302 Passive

750Hz

802 Bi-Amp

750Hz

302 Bi-Amp

100Hz

TEST PROCEDURES

Tolerance

± 1.5dB

± 2.5dB

<0.1%

6. Noise Test

6.1 All noise measurements are ANSI

A-weighted true rms, with the inputs

shorted.

6.2 Refer to the table below for the proper

noise levels.

Noise Table

Output

802 Full

Range

302 Passive

802 Bi-Amp

302 Bi-Amp

Noise

<20uV

<10uV