I have several sets of Hifonics HF12D4's. I bought these on closeout, and am really looking to move them quickly, thus the LOW, LOW price on them.
The retail price on them is $149.00 Each, get them while I got them.
HF Subwoofers HF Dual VC round profile with Low-Q, Theile/Small parameters perfect for small sealed or vented enclosure designs. The single 4-Ohm voice coil HF version is used most often in subwoofer enclosures with two or more drivers, enabling low-impedance amp loading, without giving up vital cone area. More cone area translates to more SPL.
HF Subwoofers offer "The Power of 1" Reliability. The answer is; HF's integrated spider assembly and tinsel lead-in wires. The Hifonics one-piece spider-tinsel lead design eliminates one of the most common modes of subwoofer failure, the dreaded tinsel lead breakage. And when the "heat is on" the Hifonics heat-dissipating aluminum CCAW voice-coils disperse the left-over thermal energy into the magnet & frame assembly. You need Hifonic's integrated tinsel leads, if you want sonic reliability.