JL AUDIO 8W3V3-4 žemų dažnių garsiakalbis
Automobilinis žemų dažnių garsiakalbis.
Dydis: 8" (20cm)
Galingumas: 250W RMS
Varža: 4 ohm
Continuous Power Handling (RMS) | 250 W |
Recommended Amplifier Power (RMS) | 75- 250 W |
Nominal Impedance (Znom) | 4 Ω |
Physical Specifications
Nominal Diameter | 8.0 in / 200 mm |
Overall Diameter (A) | 8.54 in / 217 mm |
Mounting Hole Diameter (B) | 7.09 in / 180 mm |
Bolt Hole Circle Diameter (C) | 7.85 in / 199 mm |
Motor Outer Diameter (D) | 4.75 in / 121 mm |
Mounting Depth (E) | 4.63 in / 118 mm |
Driver Displacement | 0.03 cu ft / 0.85 L |
Net Weight | 8.2 lb / 3.7 kg |
Parameters
Free Air Resonance (Fs) | 35.14 Hz |
Electrical “Q” (Qes) | 0.501 |
Mechanical “Q” (Qms) | 7.071 |
Total Speaker “Q” (Qts) | 0.467 |
Equivalent Compliance (Vas) | 0.54 cu ft / 15.29 L |
One-Way Linear Excursion (Xmax)* | 0.375 in / 10.0 mm |
Reference Efficiency (no) | 0.13% |
Efficiency (1 W / 1 m)** | 83.24 dB SPL |
Effective Piston Area (Sd) | 32.02 sq in / 0.021 sq m |
DC Resistance (Re) | 3.77 Ω |
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
** Efficiency (1 W / 1 m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”.
Sealed Enclosure Specifications
Wall Thickness | 0.75 in / 19 mm |
Front Baffle Thickness | 0.75 in / 19 mm |
Volume (net int.) | 0.30 cu ft / 8.5 L |
External Width (W) | 10 in / 254 mm |
External Height (H) | 10 in / 254 mm |
External Depth (D) | 9.5 in / 241 mm |
F3 | 54 Hz |
Fc | 58.8 Hz |
Qtc | 0.783 |
Enclosure Notes
The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.
* All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account.
* When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support.
* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.
* All specifications are subject to change without notice.
Ported Enclosure Specifications
Wall Thickness | 0.75 in / 19 mm |
Front Baffle Thickness | 0.75 in / 19 mm |
Volume (net int.) | 0.35 cu ft / 8.5 L |
External Width (W) | 13 in / 330 mm |
External Height (H) | 10 in / 254 mm |
External Depth (D) | 9.25 in / 203 mm |
Internal Port Diameter (ID) | 2 in / 51 mm |
Port Length (L) | 18 in / 457 mm (round port requires a 90º elbow to fit in the specified enclosure) |
Tuning Frequency (Fb) | 35 Hz |
F3 | 41.0 Hz |
Enclosure Notes
* The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.
* All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account.
* When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support.
* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.
* All specifications are subject to change without notice.