Hi Tony
(-Unless Carvin has changed it's spec for this amp-read the following info I submitted
to this site about 4 years ago)
I had 'the little green monster' (Carvin) for about 3 years. Great little amp-but don't
add an extra passive (non-powered) speaker. Look on their web site & you will see-there is no rating specified when you add another speaker.What Carvin does-is wire the output - so that when you add another speaker-it is placed in series. So this means your 100 watt amp now has twice the load resistance & the power now drops down to around 50 watts. Then each speaker can only get 25 watts. I tried to contact Carvin & ask them to produce a powered 'green extention speaker' no luck!