There are only a few manufacturers who understand the art of improving an already excellent basis. Helix has optimised the new woofer with loving attention to detail and included elements of the legendary SPXL 12 in the high-precision series. The rubber surround is not only sewn to the cone, it is also firmly screwed to the basket using the machined mounting ring. The cone itself – a Kevlar / paper-sandwich design – is also new and stiffer than before to withstand even the strongest impulses without warping.
Features
- Concave PP dustcap with embossed HELIX logo
- Long-excursion rubber surround with stitching for highest mechanical rating
- Extremely stiff Kevlar / paper sandwich cone
- Machined aluminum mounting ring to fix the rubber surround
- Double-vented voice coil for minimized compression effects
- Large magnet system for low Qts
- Torsion-free aluminum diecast basket with diamond cut
- Oversized voice coil for maximum electrical power handling and high linear excursion
- Rugged butyl magnet cover with HELIX lettering for perfect magnet protection
- Solid push terminals
Specifications
| Power handling RMS / Max : |
350 / 700 Watts |
| Impedance : |
4 Ohms |
| Voice coil diameter : |
63.5 mm |
| Voice coil winding height : |
23 mm |
| Max. linear excursion : |
+/- 6.5 mm |
| Cone area : |
346 cm² |
| Moving mass : |
123 g |
| DC resistance : |
2.8 Ohms |
| Resonance frequency : |
25 Hz |
| Mechanical Q factor : |
3.26 |
| Electrical Q factor : |
0.30 |
| Total Q factor : |
0.28 |
| Equivalent air volume : |
50 L |
| Voice coil inductance : |
1.31 mH |
| Force facto... |
Read more [+]There are only a few manufacturers who understand the art of improving an already excellent basis. Helix has optimised the new woofer with loving attention to detail and included elements of the legendary SPXL 12 in the high-precision series. The rubber surround is not only sewn to the cone, it is also firmly screwed to the basket using the machined mounting ring. The cone itself – a Kevlar / paper-sandwich design – is also new and stiffer than before to withstand even the strongest impulses without warping.
Features
- Concave PP dustcap with embossed HELIX logo
- Long-excursion rubber surround with stitching for highest mechanical rating
- Extremely stiff Kevlar / paper sandwich cone
- Machined aluminum mounting ring to fix the rubber surround
- Double-vented voice coil for minimized compression effects
- Large magnet system for low Qts
- Torsion-free aluminum diecast basket with diamond cut
- Oversized voice coil for maximum electrical power handling and high linear excursion
- Rugged butyl magnet cover with HELIX lettering for perfect magnet protection
- Solid push terminals
Specifications
| Power handling RMS / Max : |
350 / 700 Watts |
| Impedance : |
4 Ohms |
| Voice coil diameter : |
63.5 mm |
| Voice coil winding height : |
23 mm |
| Max. linear excursion : |
+/- 6.5 mm |
| Cone area : |
346 cm² |
| Moving mass : |
123 g |
| DC resistance : |
2.8 Ohms |
| Resonance frequency : |
25 Hz |
| Mechanical Q factor : |
3.26 |
| Electrical Q factor : |
0.30 |
| Total Q factor : |
0.28 |
| Equivalent air volume : |
50 L |
| Voice coil inductance : |
1.31 mH |
| Force factor : |
13.4 Tm |
| Efficiency 1 W / 1 m : |
86 dB |
| Outer diameter : |
260 mm / 10.2“ |
| Cutout diameter : |
234 mm / 9.2“ |
| Mounting depth : |
130 mm / 5.1“ |
| |
|
| Recommended enclosure |
|
| Ported box |
|
| Vented net volume : |
25 L |
| Port diameter : |
8 cm |
| Port area: : |
50 cm² |
| Port length : |
26 cm |
| Port tuning frequency : |
40 Hz |
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