There are two ways you can wire a 4x12 or 4x10 for that matter the main one is seriesparallel. Make sure all connections are solid and secure you may need to tighteng the clips using a pair of.

Speaker Wiring Configurations
Celestion speaker wiring diagram. Image of the rear of a home stereo receiveramplifier. Also attempting to wire two 8 ohm speakers in parallel to an 8 ohm stereo would have the same effect. 4 x 16 ohm speaker 16 ohm load back to guitar tech celestion unit 111 claydon business park great blakenham ipswich ip6 0nl united kingdom. Connect the new speaker according to the wiring diagram you made earlier. The recommended speaker impedance ratings are usually listed above the speaker wire posts. A home stereo for example may often list 6 16 ohms as being ok for use.
When the monostereo switch is set to mono the two 8ω speakers are wired either in series making a 16ω cab or in parallel making a 4ω cab depending on which jack you use. The diagram below shows the wiring of a marshall 2x12 speaker cab having a monostereo selection switch and two specialized input jacks. User manuals celestion speakers operating guides and service manuals. 4 x 8 ohm speaker 8 ohm load. Download 117 celestion speakers pdf manuals. Celestion design develop and manufacture premium guitar and bass speakers as well as high quality professional audio loudspeakers and compression drivers.
The combo amplifiercabinet youll be working on and the celestion speakers youre going to load into it. A screwdriver to remove the back panel of the combocabinet.