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Procedure for removing the loudspeaker grille using a 45° rotation of the Bose logo.
Steps to replace the loudspeaker grille by aligning the logo tabs with the deflector slot.
Steps to remove the loudspeaker driver, including deflector and screws.
Procedure for attaching wires to the driver and securing it with screws.
Process to remove the crossover PCB by unscrewing the driver and PCB.
Steps to replace the crossover PCB, including securing it with screws.
Procedure to remove the Speakon connector by prying out the tinnerman clip.
Steps for attaching wires to the Speakon connector and securing it.
Procedure to test speaker polarity by applying DC voltage and observing driver cone movement.
Testing the crossover by measuring voltage across a 0.5 Ohm resistor with an AC signal.
Procedure to detect extraneous noises like rubbing or ticking from drivers.
Checking for air leaks around drivers and cabinet seams using a specific signal.
Testing for buzzes, rattles, or other noises across a frequency range.
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