Disconnecting internal 2-10 speakers on Peavey Delta Blues

[ctone]

Sorry about the novice question, but how do I disconnect the internal 2-10 speakers on a Peavey Delta Blues so that only the extension speaker in connected? There is a black and a white wire, the black wire going to one speaker the white to another. If I just disconnect the white wire that will accomplish the goal; is that correct? I did it once before just can't remember if I need to disconnect both the black and white wires.

[Enzo]

The amp chassis connects to the speakers with two wires. Disconnect one or both. Either way the speaker circuit is opened. Tape off the bare end and secure it.

[Pedro Vecino]

In this model and in the Classic 30 the external speaker output is assigned to the 8 Ohm secondary. With internal speakers disconnected, the external cabinet must be of that impedance.