CX-5_Man
Forero Activo
- Ubicación
- Vallès Oriental (Barcelona)
- Motor
- 2.2d 150 CV
- Versión
- 2WD Luxury
- Color
- Crystal White Pearl Mica
No te procupes @willo . Sólo faltaría con lo que ayudas siempre !!! 
En esta imagen se ve mejor lo que comentas de la ubicación de la etapa de potencia ,el número 6:

La he sacado del PDF que antes comentaban: https://www.minidsp.com/media/kunena/attachments/43426/BosePremiumSystem_MazdaCX-5.pdf
Entonces lo que explican en este documento refiriéndose al "woofer":
Nd® woofer
The Bose proprietary Nd® woofer uses a neodymium iron boron magnet, which has 10 times the magnetic energy density of a conventional ferrite speaker magnet, allowing it to be much smaller, but just as powerful. The magnet and voice coil are placed inside the front of the speaker cone instead of protruding from behind it. This unconventional placement results in a remarkably slim profile – less than 60 mm thick. This allows the Nd® woofer to add depth and impact to the music while fitting unobtrusively into tight spaces.
l Proprietary Bose woofer design.
l Powerful sound in a slim, lightweight speaker.
l Uses a powerful, lightweight neodymium magnet.
l Innovative design results in a remarkably slim profile.
l Can be used in narrow spaces where an ordinary woofer might not fit
Entiendo que se están refiriendo a los dos Woofer de 23cm de las puertas delanteras, que vienen indicados como número 3, y que estos, deben ser los responsables de ese sorprendente grave, sin subwoofer.

En esta imagen se ve mejor lo que comentas de la ubicación de la etapa de potencia ,el número 6:

La he sacado del PDF que antes comentaban: https://www.minidsp.com/media/kunena/attachments/43426/BosePremiumSystem_MazdaCX-5.pdf
Entonces lo que explican en este documento refiriéndose al "woofer":
Nd® woofer
The Bose proprietary Nd® woofer uses a neodymium iron boron magnet, which has 10 times the magnetic energy density of a conventional ferrite speaker magnet, allowing it to be much smaller, but just as powerful. The magnet and voice coil are placed inside the front of the speaker cone instead of protruding from behind it. This unconventional placement results in a remarkably slim profile – less than 60 mm thick. This allows the Nd® woofer to add depth and impact to the music while fitting unobtrusively into tight spaces.
l Proprietary Bose woofer design.
l Powerful sound in a slim, lightweight speaker.
l Uses a powerful, lightweight neodymium magnet.
l Innovative design results in a remarkably slim profile.
l Can be used in narrow spaces where an ordinary woofer might not fit
Entiendo que se están refiriendo a los dos Woofer de 23cm de las puertas delanteras, que vienen indicados como número 3, y que estos, deben ser los responsables de ese sorprendente grave, sin subwoofer.