A capacitor coupled amp throws up some "issues".
1. If the amps are DC stable over time (no drift of the mid point voltage and they both have identical mid point voltages) then there is the possibility of connecting the speaker directly between the two amps. However that is unlikely.
2. If option 1 is not possible then the speaker has to be connected with a single non polarised cap between the two amps. The cap would be two large identical electroylitics connected plus to plus or minus to minus with 10k 1watt resistors across each to equalise voltage.
For a simple workable bridge driver that developed to something slightly more complex to address phase and time errors see,
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question.html#post3696861
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question.html#post3713691
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question-2.html#post3714687
1. If the amps are DC stable over time (no drift of the mid point voltage and they both have identical mid point voltages) then there is the possibility of connecting the speaker directly between the two amps. However that is unlikely.
2. If option 1 is not possible then the speaker has to be connected with a single non polarised cap between the two amps. The cap would be two large identical electroylitics connected plus to plus or minus to minus with 10k 1watt resistors across each to equalise voltage.
For a simple workable bridge driver that developed to something slightly more complex to address phase and time errors see,
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question.html#post3696861
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question.html#post3713691
http://www.diyaudio.com/forums/solid-state/245535-newbee-phase-splitter-question-2.html#post3714687
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