M7 marine subwoofers are optimized for high-power, infinite baffle operation with stunning bass performance in open-air boating applications.
General
|
| Warranty |
3 years |
| Sizes |
12″ |
| Color |
White Classic, White Sport or Titanium Sport |
| Physical dimensions (Diameter) |
14″ (356 mm) |
| Physical dimensions (Depth) |
12″ (Classic): 9.39″ (239 mm)
12″ (Sport): 9.42″ (240 mm) |
| Weight |
25.35 lbs (11.5 kg)
|
| Speaker type |
Infinite Baffle Subwoofer |
| Continuous power handling (RMS) |
600 W |
| Sensitivity (SPL @ 1 W/1 m) |
86.7 dB |
| Nominal impedance |
4 Ω |
| Recommended amplifier power (RMS) |
200-600 W |
| LED lighting |
yes – Transflective™ (selected Sport models only) |
| LED supply voltage |
10-14.4 VDC |
| LED Load Current @ 14.4 VDC (max) |
648 mA |
| Voice coil diameter |
4″ (102 mm) |
| Cone material |
Injection-molded, mica-filled polypropylene |
Networking & Connections
|
| Speaker connections |
Spade Connectors |
| LED connection |
Flying Lead with 4-conductor 20 AWG wire (selected Sport models only) |
Mounting Dimensions
|
| Mounting depth clearance |
7.94″ (202 mm) |
| Frontal grille protrusion |
12″ (Classic): 1.45″ (37 mm)
12″ (Sport): 1.48″ (38 mm) |
| Mounting hole |
12.0625″ (306 mm) |
| Bolt hole circle |
12.813″ (325 mm) |
| Driver displacement |
0.148 cu ft (4.19 L) |
Parameters
|
| Free Air Resonance (FS) |
35.34 Hz |
| Electrical “Q” (Qes) |
0.856 |
| Mechanical “Q” (Qms) |
10.389 |
| Total “Q” (Qts) |
0.791 |
| Equivalent Compliance (Vas) |
1.99 cu ft (56.35 L) |
| One-way linear excursion (Xmax; specs are derived via one-way voice coil overhang method with no correction factors applied) |
0.73″ (18.5 mm) |
| Reference Efficiency (NO) |
0.28% |
| Effective piston area (SD) |
80.54 in² (0.052 m²) |
| DC resistance (RE) |
3.543 Ω |
Sealed Enclosure Specifications
|
| Wall thickness |
0.75″ (19 mm) |
| Front baffle thickness |
0.75″ (19 mm) |
| Volume (net int.) |
3.00 cu ft (85 L) |
| External width (W) |
24″ (610 mm) |
| External height (H) |
18.5″ (470 mm) |
| External depth (D) |
15.75″ (400 mm) |
| -3 dB cutoff frequency (F3) |
35.52 Hz |
| System resonance (FC) |
45.58 Hz |
| System Q at resonance (QTC) |
1.02 |
Ported Enclosure Specifications
|
| Wall thickness |
0.75″ (19 mm) |
| Front baffle thickness |
0.75″ (19 mm) |
| Volume (net int.) |
5.00 cu ft (141.6 L) |
| External width (W) |
30″ (762 mm) |
| External height (H) |
18.5″ (470 mm) |
| External depth (D) |
20.5″ (521 mm) |
| Internal port diameter (ID) |
5″ (127 mm) |
| Port length (L) |
13.5″ (343 mm) |
| Tuning frequency (FB) |
25 Hz |
| -3 dB cutoff frequency (F3) |
20.96 Hz |
Additional
|
| Additional |
The enclosure recommendations listed above are external dimensions which assume the use of 0.75" (19 mm) thick material. If you are using 0.625" (16 mm) thick material, subtract 0.25" (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625" (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 multiples 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 in a bi-amplified system using high-quality satellites and a high-quality amplifier. We do not recommend the use of this with a passive crossover (coil), as this type of device will adversely affect performance.
|
