Fender Pro Junior, adding another speaker

[m9664w]

I plan to modify a Pro Junior into a two speaker setup; from a combo and separate cabinet. I am thinking of a ABY foot pedal, however, will it affect the 8-ohm bias? The amp is setup for one speaker and their is no extension speaker out. Any advice? Thanks in advance! MW

[MWJB]

Given the low cost of a Pro Jr wouldn't it be easier to buy another whole amp and run them with your ABY box?

[TD_Madden]

how about constructing a y-connector...one 1/4-inch male and two 1/4-inch female connectors (in parallel) using zipcord?