Dumb Question

I just received a Plinius 9100 from Paul and planning to hook everything up this weekend. This is for my 2 channel set up, which currently includes a Rythmik F12.
As the Plinius has no sub output, was wondering the best way to connect the sub.
It does have pre-out jacks, and my first thought was to use something like this: https://www.amazon.com/gp/product/B000BATDZ2/ref=s9_simh_hd_bw_b2VRq_p23_d0_i2?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=merchandised-search-3&pf_rd_r=8GG9WJ7GGM02BTN8WM89&pf_rd_t=101&pf_rd_p=cb75ae75-a5e0-5ee5-b55e-05231d247881&pf_rd_i=597546.
However, wouldn't this just take all of the signal and send it to the sub, leaving nothing to go to the speakers?
I've scrubbed the internet, and the only other option I've seen is using speaker cables, which I'm hoping to avoid. Seems like this would be easy but it doesn't seem to be.
Any words of wisdom would be most appreciated.
As the Plinius has no sub output, was wondering the best way to connect the sub.
It does have pre-out jacks, and my first thought was to use something like this: https://www.amazon.com/gp/product/B000BATDZ2/ref=s9_simh_hd_bw_b2VRq_p23_d0_i2?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=merchandised-search-3&pf_rd_r=8GG9WJ7GGM02BTN8WM89&pf_rd_t=101&pf_rd_p=cb75ae75-a5e0-5ee5-b55e-05231d247881&pf_rd_i=597546.
However, wouldn't this just take all of the signal and send it to the sub, leaving nothing to go to the speakers?
I've scrubbed the internet, and the only other option I've seen is using speaker cables, which I'm hoping to avoid. Seems like this would be easy but it doesn't seem to be.
Any words of wisdom would be most appreciated.
Living Room (HT):Denon AVR X-3000 ; Ascend Acoustics Sierra 2s ; Ascend Acoustics Duo Center ; LSiFX Surrounds ; Sub – Rhythmik F12SE
2 Channel Studio: Marantz PM8004 Integrated ; Marantz SA8004 ; Music Hall MMF 7.3TT w/Ortofon Bronze; Schiit Bifrost DAC ; Monitor 7 Series 2 with RDO 198s; Rythmik F12SE
Don't cry
Don't raise your eye
It's only teenage wasteland
2 Channel Studio: Marantz PM8004 Integrated ; Marantz SA8004 ; Music Hall MMF 7.3TT w/Ortofon Bronze; Schiit Bifrost DAC ; Monitor 7 Series 2 with RDO 198s; Rythmik F12SE
Don't cry
Don't raise your eye
It's only teenage wasteland
Comments
Great thank you!
2 Channel Studio: Marantz PM8004 Integrated ; Marantz SA8004 ; Music Hall MMF 7.3TT w/Ortofon Bronze; Schiit Bifrost DAC ; Monitor 7 Series 2 with RDO 198s; Rythmik F12SE
Don't cry
Don't raise your eye
It's only teenage wasteland
HT - Polk 703's * NAD T-758 * Adcom 5503 * Oppo 103 * Samsung 60" series 8 LCD
Thank you
2 Channel Studio: Marantz PM8004 Integrated ; Marantz SA8004 ; Music Hall MMF 7.3TT w/Ortofon Bronze; Schiit Bifrost DAC ; Monitor 7 Series 2 with RDO 198s; Rythmik F12SE
Don't cry
Don't raise your eye
It's only teenage wasteland