10
6. Enclosure Re-assembly
6.1 Re-install the Crossover PCB. Connect the PCB as shown in the wiring diagram and the
schematic diagram.
6.2 With the baffle face down, lower the enclosure over the baffle. Dress the foamed wires
toward the center of the loudspeaker enclosure.
Note: Ensure there are no wires visible through the speaker port once assembled.
6.3 Reinsert the 8 screws that secure the enclosure to the baffle assembly.
6.4 Perform the test procedures in this manual to ensure that there are no air leaks or wire
buzzes before returning the speaker to the customer.
7. Grille Replacement
7.1 Align the grille to the speaker enclosure and push in lightly.
TEST PROCEDURES
1. Air Leak Test
1.1 Apply an 8Vrms,105Hz signal to the speaker input terminals.
1.2 Listen to the front of the speaker carefully for air leaks from around the cabinet seams, and
Twiddler
®
speakers. Turn the speaker over and listen for air leaks from the enclosure securing
screws and drivers.
2. Sweep Test
2.1 Apply a 6Vrms Vrms, 10Hz signal to the speaker input terminals.
2.2 Sweep the signal generator from 10Hz to 3kHz and then back to 10Hz.
2.3 Listen carefully for buzzes, ticks, rattles or other noises. Replace the Twiddler speakers if
they are found to be defective.
Note: To distinguish between normal suspension noise and rubs or ticks, slightly displace the
cone of the twiddler with your fingers. If the noise can be made to go away or get worse, it is a
rub or tick and the twiddler should be replaced. If the noise stays the same, it is normal suspen-
sion noise and the twiddler is okay. Suspension noise will not be heard with program material.
DISASSEMBLY PROCEDURES
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