I pulled the grill off my Peavey Basic 112. It is attached with velcro (NASA!) Then I unscrewed 4 spots to pull speaker. There are two wires. In this case, they both had connectors, so I didn't even have to unsolder the speaker. I then bought a 2 dollar 1/4" jack. The wires inside combo, with their connectors, fit on the pos and neg of 1/4 jack without soldering. Wrapped with electrical tape. My combo head (50 watts rms into its original 8 ohm single 12) now powers my 2x12 4 ohm cab at 75 watts. Sounds so much better. No more farting out when I hit my lows-- the two 12s handle it well. Will be testing out my vintage CTS 10 inch speakers in a cab which will be built to early 1970's Ampeg classic sound. I have repaired the rip in the one cts speaker elmer's glue and toilet paper. Oh yeah, I no longer have the 60hz buzzhisst! It is gone! The 4x12 system (16ohm + 4ohm) sounds killer, too. It's going around 5ohms with about 70 watts. Right? If you want to use only the speakers in a combo get a 2 dollar male 1/4", attach some wires and connect other end to the combo's speaker(s) (enough wire to get it to the head). Plug into jack of your favorite amp head. f n o r d !