Test Procedures - Bose 802C Service Manual

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
-
± 1.5dB
± 2.5dB
<0.1%
<0.1%
<0.1%
<0.1%
10
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
<20uV
<20uV
<10uV