I need to know the impedance of the amplifier of the DCB7005. Wishing to add a pair of speakers in parallel of the existing ones, this information is very useful to know in order to not to stress too much the amplifier.

This information is not to find in any User Manual or technical descriptions available on print or on the web.

The only thing I got is a recommendation to "connect speakers only with impedance that is the same or higher than that of the supplied speakers".

According to the User Manual, the impedance of these speakers is 6 ohms. But the resulting impedance of the system I want to build is 3,4 ohms.

Is this ok for the DCB7005 amplifier or will it be a menace for the integrity of the system ?