![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)
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
![How 2 hook up a active subwoofer to a receiver or integrated amp with no subwoofer pre out on unit - YouTube How 2 hook up a active subwoofer to a receiver or integrated amp with no subwoofer pre out on unit - YouTube](https://i.ytimg.com/vi/Ew7G6H9YoVA/mqdefault.jpg)
How 2 hook up a active subwoofer to a receiver or integrated amp with no subwoofer pre out on unit - YouTube
Can I connect a separate Subwoofer to second speaker output on an old NAD 3130 stereo amp? | AVForums
![Would I be able to connect my powered subwoofer to Pre-Out of my Maratnz SR4021? : r/BudgetAudiophile Would I be able to connect my powered subwoofer to Pre-Out of my Maratnz SR4021? : r/BudgetAudiophile](https://preview.redd.it/g61q99j76sk51.jpg?auto=webp&s=be397e17dcb145398bdac2d2202ad81b60eceb0a)