TDietz

I took apart the cable that came with the speakers and measured the diameter of the wire with some calipers, but that probably wasn't necessary since the next size up (14 guage) cable bundle wouldn't be able to fit in the backshell anyway. The gauge is critical for fitment in the connector, not so much speaker performance. As for length, at 4 ohm and 16 gauge, you just need to keep it under 24 feet according to this guide: http://www.roger-russell.com/wire/wire.htm My cable is closer to 20 feet, and no issues. Sent from my Pixel 4 XL using Tapatalk

All part of the plan...once the children won't try to destroy them! Sent from my Pixel 4 XL using Tapatalk

Good news, I was able to find connectors, a cable and some heat shrink, and can confirm that it works and looks great. Here's how to do it: You'll need what is called an "aviation connector" that seems to be used for CB radio microphone cables and some other things. This is what I bought: https://www.amazon.com/dp/B07D3DC1PD/ref=cm_sw_r_cp_apa_fabc_RW5KP4XFWQA6R9RRA5RZ?_encoding=UTF8&psc=1 $10 for 10 connectors. There are other vendors that sell packs of 5, but the price isn't really different, and if you're like me, you'll end up consuming a few of them just getting your soldering technique dialed. I also bought in-wall rated 16 gauge 4 wire cable from a local AV installer. You can buy a spool online, but just call around to a local installer and buy a length of what you need. I paid $16 for 25 feet, and this is the brand of what they sold me: https://www.southwire.com/wire-cable/low-voltage-cable/in-wall-speaker-cable/p/ELC25 Turns out, it was bright yellow... So I needed some white heat shrink, which I'm actually glad that was the case since even the white version would have text printed on it. You'll also need heat shrink anyway to build up the thickness a bit so the backshell strain relief can grip the cable (I doubled up at the end for this, see photo). This is the heat shrink I bought: https://www.amazon.com/dp/B074HS453W?ref=ppx_pop_mob_ap_share Pin out is straight 1-1, 2-2, 3-3, 4-4, but that means one end will have the wires twisted a bit, and this will make soldering less than fun. If you've never done electrical soldering before, you'll want to practice a bit. I kept having a problem of the wires heating up too much to the point of melting the insulation and shorting together, and ended starting over a few times (see photo of the failures...). If you have a good soldering iron this will be less of an issue, but regardless make sure you inspect your work (i.e. use a multimeter to confirm continuity and no shorts between other wires). I ended up wrapping electrical tape around each wire where they crossed to be safe. I also wrapped the soldered connections to prevent shorts to the backshell. End result I'm really happy with, and honestly better than what I would be able to achieve by simply buying a longer cable in terms of appearance, if one were available. Also, this cable is in wall rated, and I'm not sure the klipsch one is. Sure wish they would have just used banana connectors however! Good luck. Sent from my Pixel 4 XL using Tapatalk

In the same boat as you. Klipsch just ignores questions about cables and connectors. Spent a lot of time trying to find some connectors to be able to build one myself, and I think I figured it out. Just ordered a sample of connectors and if they check out I'll be buying some 4 wire cable to build a longer cable. I'll post again with what I find. I probably need to buy cable / connectors in excess of what I need, would you or anyone else be interested buying a cable from me so I can use up the excess?