Creo que he encontrado el manual de tu sistema http://worldwide.bose.com/productsup...10_series2.pdf

La verdad es que es un "invento", las salidas de altavoz del AV van al módulo central (el sub). De ahí salen unos conectores especiales para los satélites.

No veo qué hace con la salida de subwoofer del AV, parece que no se conecta.

Leyendo el manual pone:

Setting your Dolby Digital (AC-3) receiver

Your Acoustimass 10 Series II speakers are compatible with the output from Dolby Digital (AC-3) receivers. Take special care to set the channel output according to the specifications listed in the chart below. The cube speakers are full-range loudspeakers and must be set up as LARGE speakers at the receiver or its TV screen menu. Turn the subwoofer OFF, but turn the LFE (low frequency effects) ON. If available, set the crossover frequency to 200Hz.

Speaker Setting at receiver

Left and Right Front Large
Center Large
Left and Right Surround Large
LFE (low frequency effects) ON
Subwoofer OFF
Crossover frequency 200H

No entiendo porqué pide que se configuren los satélites como LARGE para después cortar a 200 Hz. A ver si alguien da un poco de luz.

Saludos.