Venue SUB12
SUB12 Test Set Up and Procedure
Equipment needed:
•Function/signal generator/sweep generator
•Integrated Amplifier
•Multimeter
•Speaker cables
General Unit Function (UUT = Unit Under Test)
1)From the signal generator, connect line level (RCA) cables to the Subwoofer Line Level Input jacks L/R on the UUT. Use a
2)Turn the CROSSOVER control to maximum (150).
3)Turn the LEVEL control on the UUT to completely counterclockwise (MIN).
4)Phase switch position = does not matter; LFE/Normal switch should be on NORMAL
5)Turn on generator; adjust to 150mV, 50 Hz.
6)Plug in UUT; turn the power switch ON. LED should switch from Red to Green.
7)Turn LEVEL control full clockwise (MAX); immediate and vigorous bass response should be heard and felt from port tube opening on the bottom.
8)Turn off generator, turn LEVEL control full counterclockwise (MIN), and disconnect RCA cable.
9)Connect one pair of speaker cables to Speaker Level input terminal (IN) on UUT. Cables should be connected to an integrated amplifier fed by the signal generator.
10)Turn on generator and adjust so that speaker level input at the amplifier is 3.3V, 50 Hz. Turn LEVEL control full clockwise (MAX).
11)Green LED should light; immediate and vigorous bass response should be heard and felt from the port tube opening.
Sweep Function
1)Follow steps
2)Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofers and test.
Driver Function
1)Remove woofer from cabinet (instructions on exploded view drawing); detach + and - wire clips.
2)Check DC resistance of woofer; it should be 4.8 ohms ±10%
3)Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4)Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
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