Keep these diagrams bookmarked. In the used market, 90% of "broken" Z-5500 systems are actually just missing the correct proprietary cables. With a soldering iron and this guide, you can resurrect a legend.
Here is the standard wiring diagram for the control pod cable. Note: Wire colors may vary slightly depending on the manufacturing batch, so always verify with a multimeter if possible. logitech z-5500 wiring diagram
Even with a perfect diagram, things go wrong. Here is the Z-5500 troubleshooting checklist. Keep these diagrams bookmarked
If you try to use a standard VGA extension cable, it often fails because Logitech used specific pins for power and ground. If you need to build your own cable, use this pinout looking at the female port on the subwoofer . Here is the standard wiring diagram for the
The connection between the Control Pod (SoundTouch Center) and the Subwoofer uses a DB15 (High Density)
When the pods began to die and Logitech discontinued the system in 2012, owners were left with a heavy, powerful, but useless 10-inch subwoofer. This birthed a massive "hacking" community dedicated to mapping the to "hotwire" the subwoofer back to life. The Wiring "Mystery"