unsure
minimum impedance for that amp is 4ohms
can only guess the are running 2 8ohm speakers in parallel for 4ohms.
If its a sealed cab use
Eminence CA2010 or
Legend BP102
if its ported use a Eminence
CH2010 ,
S2010 or Legend BP102
it could be a eminence speaker compare the photos
the label will be different but the magnet and basket will be the same. If it is a Eminence then there should be a serial number stamped on the back of the cone in white ink. Give Eminence tech support a call/email and they will tell you the off the shelf equivalent.
most the 10" ceramics have low sensitivity in the 93dB range so a upgrade to a 96dB neo speaker would give you much more volume before distortion and need much less power, view the 10" line
here