Hello Carlos, from what I understand, these speakers are powered by Crown Class D amplifier circuits, I do not have the circuit of this JBL model
I can offer you the circuit of the PRX535, which I think must have its similarity, I pass the link to download it
I hope you can solve the problem
Greetings Franco Dosil
Hola Carlos, por lo que tengo entendido, estos bafles vienen potenciados con circuitos amplificadores de Crown Clase D, no tengo el circuito de este modelo de JBL
Te puedo ofrecer el circuito del PRX535, que considero debe tener su similitud, te paso el link para que lo descargues
Espero puedas resolver el problema
Saludos Franco Dosil
https://elektrotanya.com/jbl_prx535.rar/download.html http://www.jblproservice.com/pdf/PRX%20Series/PRX%20Series%20Amp%20Schematics.pdf
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