ESB 10250 MM DVC OHM SUBWOOFER User Manual

June 5, 2024
ESB

3.10D2
10″/250 MM DVC 2+2 OHM SUBWOOFER
User Manual

4-layers dual voice coil Kapton® voice coil support High-grade Y30 magnet Motor made of very low carbon steel Optimized motor design Long travel rubber surround Steel basket Internal stiffening ring Treated cellulose pulp cone Conex® spider CNC plates processing

Your ESB subwoofer is a precision loudspeaker that has been designed to produce very high-quality sub-bass frequency performance in your car. To maximize the performance of your speaker we highly recommend using a dedicated enclosure. Inside this manual, you will find specifications and two recommended enclosures for your speaker: one is a sealed enclosure, and the other is a ported design. Both types of enclosures will give you excellent sound quality and low-frequency extension. The sealed enclosure is a better choice if the space is extremely tight, but the ported enclosure will produce 3dB more output at the same power if you have the extra space to work with.
T &S parameters specification

Free air resonance (Fs): 36.6 Hz
Electrical “Q” (Qes): 0.51
Mechanical “Q” (Qms): 2.13
Total Speaker “Q” (Qts): 0.42
Equivalent Compliance (Vas): 0.808 ft’ / 22.8 lit.
Linear Excursion (Xmax): 0.551″ / 14 mm
Efficiency (1W/1m): 85.3 dB SPL
Effective piston area (Sd): 0.558 in’ / 359,68 mm2
DC resistance* (Re): 1.79+ 1J9 Ohm
Nominal impedance: 2+2 Ohm
Power handling (continuous): 490 W
Power handling (peak): 980 W

*Series and parallel value

Physical specification

Nominal diameter: 10″ / 250 mm
Overall Diameter (A) 10.66″ / 271 mm
Mounting hole diam. (B) 9.13″ / 232 mm
Bolt hole circle (C) 9.84″ / 250 mm
Magnet diameter (D) 5.31″ / 135 mm
Mounting Depth (E) 5.39″ / 137 mm
Driver displacement 0.032 ft3 / 0.92

Recommended Sealed Enclosure

  • Volume (include speaker displacement): 0.635 ft3/ 18 lit.
  • External dimension (W,H,D): 16.73×11.81×9.44″ / 425x300x240 mm

Note: Dimensions are assumed with 3/4″ material (19mm).
This is the suggested thickness. Less thickness may compromise box rigidity with leak bass response.
Add inside the damping material for about 75% of the volume.

Recommended Ported Enclosure (Reflex option A)

  • Volume (include speaker displacement): 0.741 in3 / 21 lit.
  • External dimension (W,H,D): 19.49×11.41 x10.23″ / 495x290x260 mm
  • Reflex port dimension (R1,R2): 10×0.787″ / 254×20 mm
  • Reflex port length (L1,L2): 8 74+6.61″ / 222+168 mm

Recommended Ported Enclosure (Reflex option B)

  • Volume (include speaker displacement): 0.741 in3 / 21 lit.
  • External dimension (W,H,D): 18.11×11.41×10.23″ / 460x290x260 mm
  • Reflex tube internal diameter (ID): 3.07″ / 78 mm
  • Reflex tube length (L): 14.48″ / 368 mm

Note: Dimensions are assumed with 3/4″ material (19mm). This is the suggested thickness. Less thickness may compromise box rigidity with leak bass response. Add inside the damping material for about 35% of the volume.

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