need help using cabs rated with different ohms

[low rider]

I 'ave a mesa M9 which caters for 2, 4 and 8 ohms cabs.
now i 'ave an 8 ohm cab and a 4 ohm cab, were I to connect them in paralell [i assume that will lower the impeadence to 6ohms] will this work? without damaging the amp?
RATHER NOT FIND OUT THE HARD WAY

cheers

[Peg_legs]

no problem of damaging the amp like that. Just don't go below 2 ohms

if it were an all tube amp, select the ohm load you will use and match it with the ohm load of your cabinets

[BurningSkies]

You're actually lowering the impedance to 2.67 ohms, which should still be safe with this amp, given it runs at 2ohms.

[DD_BigBottom]

BurningSkies is spot on about the impedance. Anytime you parallel speakers together, the combined impedance will be lower than the lowest load.

Also your 4 ohm will play louder than the 8 ohm cabinet unless the 8 ohm cab has a sensitivity rating 3dB higher than the 4 ohm cabinet.

I personally don't mix cab impedance unless I can put them on two different amp channels where I can control each output separately.

[low rider]

Thanks Gents
I think I'll sell the 4 ohm cab and get another 8 ohm cab

cheers!!!!!!!