Heh, the answer is sort of. Your receiver likely already has a filter network to "ground out" any coupled electro magnetic interference (EMI) coming from those

Heh, the answer is sort of. Your receiver likely already has a filter network to "ground out" any coupled electro magnetic interference (EMI) coming from those wires. All conductors "receive" to a greater or lesser degree and so people building things that connect to wires have to account for that and plan for it. So using your speaker wires directly would probably not work very well because of filter networks in the receiver. For folks just playing around receiving HF I find the YouLoop[1] is a low cost and very effective magnetic loop antenna that you can set up on a wall in a dorm room (or living room :-) or pretty much anywhere. The Airspy HF+ discovery[2] is probably the best valued HF SDR you could use with that, but it works well with RTL-SDR V4 dongles[3] as well and the RT832 ones from NoElec[4] although NoElec and the V3 or earlier dongles don't go below about 55 MHz and need an upconverter like the HamItUp! [5] to move the bottom part of the HF spectrum up into a region the RTL832T receiver can tune them. (the V4 RTL-SDR dongle has an internal up converter for this purpose). [1] Youloop magnetic loop antenna -- https://airspy.com/youloop/ https://airspy.com/youloop/ [2] AirSpy HF Discovery + -- https://airspy.com/airspy-hf-discovery/ https://airspy.com/airspy-hf-discovery/ [3] RTL-SDR "dongle" V4 (low end ~1 Mhz) -- https://www.rtl-sdr.com/rtl-sdr-blog-v4-dongle-initial-release/ https://www.rtl-sdr.com/rtl-sdr-blog-v4-dongle-initial-relea... [4] NoElec NESDR SMArT (low end 55 MHz) -- https://www.nooelec.com/store/sdr/sdr-receivers/nesdr-smart-xtr-sdr.html https://www.nooelec.com/store/sdr/sdr-receivers/nesdr-smart-... [5] HamItUp! -- https://www.nooelec.com/store/sdr/sdr-addons/upconverters-downconverters/ham-it-up-plus.html https://www.nooelec.com/store/sdr/sdr-addons/upconverters-do...