Adding a second sub

The SW2Si, when combined with the NHT SA-2 monaural subwoofer ampli-fier, comprises the NHT SW2Pi Powered Subwoofer System. For a flatter overall low frequency response and increased clarity,two SW2Si subwoofers may be connected in parallel to the NHT SA-2 subwoofer amplifier, which is designed with enough highcurrent capability to drive two subwoofers (for more power, you may substitute the SA-3 amplifier). Alternately, you can use anexternal crossover and a monaural amplifier of your choice to create your own powered subwoofer system
This is what i needed.

Thirsty93,

Good question. I am adding a second sub HT system using a Rotel 965 receiver. I am planning on running another pair of cables from the speaker terminals to the high level inputs on the subs.

Upscale Audio recommends this connection type on their website. Anyone try this with 2 subs? Will it place a heavier load on the receiver? Thoughts?

Thanks

Well right now I have my nht 1.5 running to the reciever and I am using the line level connection on the sub amp to the sub connection on the reciever.Then I'm using the subwoofer out on the sub amp to connected the sub to the amp.