Difference between subwoofer out and subwoofer preout purple rca connectors on onkyo tx nr646 question | AVS Forum
Onkyo Stereo Receiver TX 8220 Bluetooth Subwoofer Pre Out in Hannover - Linden-Limmer | Stereoanlage gebraucht kaufen | eBay Kleinanzeigen
![Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile](https://preview.redd.it/d66cdilbzae11.png?auto=webp&s=b800f083815aa5ad7cc313e1925f787e9dab0c31)