I have been given some bose speakers 2 door ones with tweeters 2ohms and two tweeters that are 4 ohms . My amp says
XA2150 Amplifier
Power output @ 14.4 VDC, 20-20 kHz ............ (4 ohms) 75 Watts per channel RMS, < 00.08% THD (2 ohms) 100 Watts per channel RMS, < 00.1% THD (4 ohms) bridged 200 Watts per channel RMS, < 00.1% THD
Frequency Response..................20 Hz-20 kHz ± 3 dB Signal to Noise Ratio @ Rated Power.............>100 dB
Channel Separation @ Ref.
Power..........................>65 dB, 1 kHz THD & IMD @ Ref.
Power into 2 ohms ................<0.1%
Speaker Impedance............... 2-8 ohms
Input Impedance ........... 20 k ohms
can I wire the 2 an 4 ohm speakers together ?

That's a no then, not to worry I have sorted it