HOMER ACOUSTICS RTL 20 full range passive speaker | Cement

Full range passive speaker (requires external amplifier) Box size 20 cubic centimeters / single weight 9 kg / one set is left and right 2 channels specification Ni 8 ohm | Ri 15 W | Spl 88 dB | Rfr 50-20 kHz | Vb 4.4 L Inner RTL Length 334 M / 70/4 = 1.19 M The appropriate listening distance from speakers to ears is 4 M Internal design https://1.bp.blogspot.com/-h7vRrXg-jtY/YAUByhCSpZI/AAAAAAAAD_c/qe_j9yeL0rkPt_mNEbtWxaaHnn0VnNhPwCPcBGAYYCw/s1600/%25E5%259C%2596%25E7%2589%2587%2B118.jpg A single one weighs 9 kg, effectively suppressing resonance in various frequency bands. Comes with 8 silicone feet.