2 Channel Subwoofer connection


Hello, I am seeking advice for a Subwoofer connection.  My system consist of a Rotel RCD 1570, Jolida JD 202 Integrated Tube Amplifier and a pair of Bowers & Wilkins 705. This set up is just for music listening.
I like how much detail I get from the music with these 705, the only problems is that my loft is an open space with high ceilings, therefore, the bass is not very strong. I thought I could add a Subwoofer. The issue is that my integrated amplifier doesn't provide a Subwoofer out. The only option will be to run speaker wire from the integrated into the Subwoofer's speaker level inputs, then connect the 705s to the subwoofer's out (As pictured in the diagram)

 https://cloudflare.crutchfieldonline.com/ImageBank/v20160824170200/ImageHandler/scale/978/978/core/l...

However, as I've never attempted this connection, I am concerned this could degrade the audio signal, would the sound quality be affected due all these extra wiring and having the signal go through the subwoofer and then to the 705 monitors?
I've looked into the Bowers & Wilkins ASW750  but this doesn't come with sub's level inputs. I am considering the ASW300 instead. Any advice will be much appreciated.
Thanks,

Joseph







mamifero

Showing 2 responses by danoroo

Any subwoofer with high level inputs will work fine.  Just leave your B&Ws wired directly as they are and run two speaker wires to your subwoofer, connecting from the same taps your B&Ws use to the left and right high level inputs on the sub.  I would not wire a passive sub this way as the amp will see the additional load.  Wiring an active sub this way is perfectly OK as the amp sees no additional load.
Subs that use 4 (2 neg and 2 pos) wires from the amp to receive the signal is an old outdated way of running a sub, how can you say the active sub dosent see the 2 additional wires connected to it..it does,


The subwoofer plate amp sees a signal from the speaker terminals of the main amp, but the subwoofer driver load is seen only by the plate amp itself, not the main system amp.  If I understand the OP's situation, he can connect any active sub with high level (speaker level) inputs to the speaker terminals of his Jolida 202 and the Jolida will still recognize ONLY the load from his B&W 705s.