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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 4 responses by hifiman5

hifiman5's avatar
hifiman5
1,832 posts
 
Interesting hook-up method!  I guess what you're doing is trading off the benefit to your system amplifier not having to reproduce deep bass to the main speakers in favor of eliminating any signal degradation to the main speakers by avoiding a crossover network in the signal path.  Seems reasonable to me, especially if you have a robust amp or very efficient main speakers.

I use crossovers with my set-up but they are of a very high quality as Vandersteen prefers that set-up.

One more thought...You must have to be careful that the quality and nature of the bass from the main speakers mates up well with your subs.

As usual, system set-up and careful component matching are key.

hifiman5's avatar
hifiman5
1,832 posts
 
Sorry Matt.  I'm not following your post. Probably my fault as I am not good at reading between the lines. Can you explain the above post in a bit more detail?  I'm wanting to understand your point.  Thanks!
hifiman5's avatar
hifiman5
1,832 posts
 
+1 mr_m   I have two Vandersteen 2wq subwoofers.  Using RV's top quality crossover that you set relative to the input impedance of the system amplifier, helps the subs to integrate seamlessly with the main speakers.  I have Vandy Treo CTs which are a full range speaker in their own right.  The subwoofers free the system amp of having to power the deepest bass as each sub. has a 300 watt amp. and the speaker cable hookup of the subs to the system amp allows the subs to see the amplifier output so that the sub sound integrates perfectly or nearly so, to the main speakers.

I have experimented with the integration notion by using the subs then disconnecting them and trying to identify the point at which the sub kicks in by ear.  I just can't find it.  The key to this kind of seamless sonic integration is to adjust the "Q" and level of the subs.  Once you get it right, you free the main speakers and power amp from providing deep bass, improving the dynamic ebb and flow of the music throughout the full frequency range of the music.  If you can establish proper speaker and sub. placement in your room, the speakers and subs just disappear.  It's all about the music now, no the gear reproducing it!

As far as REL goes, I have no experience with them but have read many many positive references to them on A'Gon and elsewhere.

Happy Listening!
hifiman5's avatar
hifiman5
1,832 posts
 
+1 almarg!  Very easy to follow explanation.  I appreciate the clarity.
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