Help in Knowing what amp will match a JL ib4

[Trojan]

chiefs and chiefesses

i need your help in determining what amp to use with these subs that i have with me.

specs of the subs are as follows:

Subwoofer Specifications 12IB4
Fs (free-air resonance): 40.5 Hz
Qts (total speaker “Q”): 0.634
Qes (electrical “Q”): 0.673
Qms (mechanical “Q”): 10.967
Vas (equivalent compliance): 3.97 112.4
Xmax (linear excursion one-way): 0.288 7.3
Effi ciency (1W/1m)*: 92.2 dB
Sd (effective piston surface area): 78.5 0.0506
Re (DC resistance): 6.07 Ω
Znom (nominal impedance): 8 Ω
Pt (continuous thermal power handling): 125 Watts

Wired directly to the amplifier:
A single 8Ω speaker will present a 8Ω load.
With speakers wired in parallel:
Two 8Ω speakers will present a 4Ω load.
With speakers wired in parallel:
Three 8Ω speakers will present a 2.7Ω load.

thank you very much for the help! nalilito kasi ako sa "8Ω" what does this mean?