Eq Card Test Procedures - Bose 1800-V Manual

1. 402 Equalizer Curve
Use the following test set-up parameters when measuring Full Range or High Frequency response
outputs:
A. Apply a signal of 850 Hz at 1 Vrms and adjust the amplifier's output to 6 Vrms.
B. Reference a dB meter to the output.
C. Measure the response according to the charts in Sections 1.1 and 1.2
1.1 402 Full Range Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the Full Bandwidth (Full Range) position before
beginning this test.
FREQUENCY
1.2 402 High Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the HF Only (High Frequency) position before
beginning this test.
FREQUENCY
2. 502A Equalizer Curve
Use the following test set-up parameters when measuring Full Range or High Frequency response
outputs:
A. Apply a signal of 600 Hz at 1 Vrms and adjust the amplifier's output to 6 Vrms.
B. Reference a dB meter to the output.
C. Measure the response according to the charts in Sections 2.1 and 2.2.
2.1 502A Full Range Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the Full Bandwidth (Full Range) position before
beginning this test.

EQ CARD TEST PROCEDURES

60
105
220
850
4000
14500
60
105
220
850
4000
14500
FREQUENCY
40
140
600
2200
5000
15000
OUTPUT SPECIFICATION (dbr)
-3.7±1.5 dB
+8.5±1.5 dB
+3.5±1.5 dB
0.0
+5.8±1.5 dB
+13.3±1.5 dB
OUTPUT SPECIFICATION (dbr)
-16.4±1.5 dB
-4.8±1.5 dB
+2.8±1.5 dB
0.0
+5.8±1.5 dB
+13.3±1.5 dB
OUTPUT SPECIFICATION (dbr)
-24.5±2.0 dB
+4.3±1.5 dB
0.0
+3.5±1.5 dB
+12.5±1.5 dB
+19.0±1.5 dB
30