<p>Shallow design – rich bass<br>The K 10S is the ultimate problem solver when it comes to realizing particularly flat and compact enclosure designs. Its extremely low installation depth opens up completely new possibilities for installation without making any acoustic compromises. Thanks to its large double voice coil and low resonance frequency, the K 10S doesn’t need to hide from woofers with greater installation depth when it comes to bass performance.<br><br>Smart down to the very last detail<br>The extremely stiff sandwich paper cone in connection with the heavy-duty dual voice-coil not only converts amplifier power easily and without compression effects into loads of sound pressure, but also scores sonically with subtle beats.<br>A special highlight: the magnet system has a threaded hole on the back and thus allows the woofer to be fixed to the back panel of the enclosure. In this way, housing vibrations can be effectively reduced even with thin walls, because with flat constructions every millimeter of construction depth counts.<br><br>Flexible connection<br>The double voice-coil design offers more flexibility when selecting an appropriate power amp. Whether 1 x 4 Ohms, 2 x 2 Ohms or 1 x 1 Ohm impedance – this low bass specialist makes any configuration easily possible.<br><br>″All inclusive″ for the do-it-yourselfer<br>In addition to the high-quality connection terminal with gold-plated binding posts, a solid protective grille and gasket are also included.<br>For optimal bass performance in DIY installations you can find recommendations for sealed and vented enclosures with all parameters such as net volume, port tuning frequency or DSP settings in our technical data sheet.<br><br>Features<br>Chassis with particularly low installation depth – optimized for compact and shallow enclosure constructions<br>2 x 2 Ohms dual voice coil for flexible system configuration<br>Magnet system with threaded hole on the back – allows screwing to the back panel of the enclosure for stabilization and reduction of enclosure vibrations<br>Rugged magnet cover with HELIX lettering for perfect magnet protection<br>Extremely stiff sandwich paper cone<br>Long-excursion rubber surround for highest mechanical rating<br>Enclosure connection terminal, grille and gasket included in delivery</p>

TECHNICAL DATA

Power RMS / max.P300 / 600 Watts
Impedance Z2 x 2 Ω
DC resistance Re2 x 1.6 Ω
Resonance frequency Fs34 Hz
Mechanical Q factor Qms6.37
Electrical Q factor Qes0.49
Total Q factorQts0.45
ComplianceCms198 μm/N
Equivalent air volumeVas34 L
Force factor B*I12.7 Tm
Efficiency 1 W / 1 mSPL87.0 dB
Cone area Sd353 cm²
Moving mass Mms112 g
Cone material Sandwich paper cone
Mechanical resistance Rms3.73 kg/s
Voice coil diameterø50.8 mm
Voice coil winding height 19 mm
Max. linear excursion Xmax+/- 6.0 mm
Outer diameterø262 mm / 10.31″
Installation diameterø229 mm / 9.01″
Installation depth 84.5 mm / 3.33″

Recommended enclosure volumes
Sealed box
Net volume 14 L
Lower limiting frequency (-3dB) 46 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 45 Hz cut-off frequency and Q = 1.3
additional EQ filter 100 Hz / Q = 1.0 / -3 dB

Vented box
Net volume 16 L
Port diameterø70 mm / 2.76″
Port area 38 cm²
Port length 38 cm / 14.96″
Port tuning frequencyFb37 Hz
Lower limiting frequency (-3dB) 39 Hz
Recommended DSP settings Recommended ″self-define″ highpass filter with 37 Hz cut-off frequency and Q = 1.2
additional EQ filter 95 Hz / Q = 0.7 / -3 dB.