Volvo xc40 amplifier

[Lukas]

(P)32265284AA        hi.  my volvo xc40 bought in italy only has 2 speakers in the front doors.  I want to expand it.  I have an active orbit and after changing the configuration to a higher volume, there is no signal.  only for those two speakers.  the amplifier number is attached.  it's sad so little gear.  can you advise me?

As i good remember there is a point in configuration where You can change speakers quantity, maybe this is the point.

"there is no signal" - as i understand there is no signal out on amplifier for others speakers, that was Your point?

so no it didn't help 451. no sound at all.  only channels 1 and 3.  the amplifier that I bought has cables for 5 channels.  but it cannot be started.  only the 1st and 3rd channels are working.  I don't understand why.