[Aitchmarsh]

Hi, I have a 2010 BMW e93 with I Drive Business Nav but a BASE audio non amplified. The floor sub-woofers have 4 wires into them.

As these are in parallel with the single unit door speakers is it not possible to connect into 2 of these 4 wires to take high level inputs (2 front channels) to the 4 channel amp???

Then connect to the remaining 2 wires to feed new door speakers (I intend to use the Focal 100RS units) with 2 channels from the amp. This will save running new wires into the doors from the sub connector point. Running new wires to the sub point from the rear amp for the 4 channels.

Can anyone help please??