I wired the speakers up today in series, I used bullet connectors under the storage unit noting the left and right side wires for ease of removal when accessing the engine cover.
The sound is so much better now with the rear speakers filling behind my head with sound,
I don't think it will be necessary to insulate behind them as the speakers are mounted on carpet and the compartment they are in is
also carpeted and it sounds fine to me.
Very pleased
