Sub wiring - using RCAs

[Juzzie Wuzzie]

Both my Naim Uniti Lite and Primaluna preamp have stereo RCA outs for inclusion of a powered subwoofer. However, neither has the ability to divert the low end to the sub and the mid/high end to the speakers. As such, I'm stumped as to how one connects a subwoofer. Any ideas?

NB: more out of interests sake rather than I'm actually going to do it.

 

[Deliriumbassist]

In exactly the same way as most people have their subwoofers setup - using only the low pass filter on the subwoofer to take over from the main speakers based on the natural in-room roll-off of the main speakers. It's the same basic principle, you just don't have the luxury (and benefits) of having an adjustable high pass filter - consider it 'fixed.'

 

[daytona600]

What Subs are you using
One or Pair
Connection RCA / XLR / Speakercon

 

[jjbomber]

Both my Naim Uniti Lite and Primaluna preamp have stereo RCA outs for inclusion of a powered subwoofer. However, neither has the ability to divert the low end to the sub and the mid/high end to the speakers. As such, I'm stumped as to how one connects a subwoofer. Any ideas?

NB: more out of interests sake rather than I'm actually going to do it.

With a REL sub, you would use spade connectors on the speaker output posts.
Type A/B amplifier:

View: https://www.youtube.com/watch?v=YIenhBQEtE4

Type D amplifier:

View: https://www.youtube.com/watch?v=3F5WTOu60hE

 

[Juzzie Wuzzie]

Not using any subs, it was merely as a matter of interest as I was stumped as to how you do it via RCA (I understand the high level chain approach).

Thanks to all who responded and esp. DB who confirmed my thoughts that it adds low frequencies to the full frequency output of the stereo speakers.