Wiring a 4x10 Cabinet from scratch - need help | TalkBass Wiring a 4x10 Cabinet from scratch - need help Discussion in 'Amps and Cabs [BG]' started by bassman08, Apr 21, 2006. Apr 21, 2006 but the most recent owner had loaded it with four 16 ohm speakers and re-wired to make it a 4 ohm cabinet. This diagram shows your connections for Port City Speaker Cab Wiring! - YouTube Click to view on Bing7:19So I just snagged an empty Port City 4x12 cab. I had heard how bad ass they are (I have a 1x12 that I love), so I emailed Daniel the owner and he got me a sweet deal on an empty one used. It'sAuthor: Cameron JohnsonViews: 39K Jumbo Sunshade - Speaker Wiring Diagrams Jumbo Sunshade - Ezine. Speaker Wiring Diagrams for 2-speaker & 4-speaker guitar and bass cabinets (for use with tube amplifiers) Wiring your guitar or bass cabinet incorrectly, or, using a mis-matched combination of cabinet and tube amplifier; will at best cause excessive wear on your power tubes, or at worst could result in damage/failure of your tubes, speakers or transformer.