JL Audio announced the M-Series and MX-Series ETXv2 enclosed marine speaker systems that are ideal for mounting onto wakeboard towers or other tubular structures on a boat.
The ETXv2 systems can be ordered with JL Audio's maximum-performance, M-Series (M770-ETXv2) 7.7-inch coaxial tower speakers. Specifically tuned for tower enclosure applications, these coaxial drivers deliver clean, loud audio that can be heard well beyond the boat when mounted up high. For lower power applications, a version with the more affordable MX-Series (MX770-ETXv2) 7.7-inch coaxial is also available.
The enclosures are injection-molded from marine-grade polymer materials and feature a decorative, aluminum JL Audio logo cap on the end opposite the speaker. Each is designed to mate with one of JL Audio's machined aluminum clamp systems (sold separately and available to fit a wide range of pipe diameters). 
Like all JL Audio marine speakers, these are built to withstand intense UV and a real saltwater marine environment, delivering years of listening enjoyment.
Specifications
| M770-ETXv2 | MX770-ETXv2 | |
| Coaxial Speaker Nominal Diameter: | 7.7 in (196 mm) | 7.7 in (196 mm) |
| Continuous Power Handling: | 100 W (RMS) | 70 W (RMS) |
| Recommended Amplifier Power: | 40-175 W per ch. | 20-150 W per ch. |
| Frequency Response: | 50 Hz – 25 kHz ±3 dB | 60 Hz – 25 kHz ±3 dB |
| System Efficiency: | 91 dB @ 1W / 1m | 90.5 dB @ 1W / 1m |
| Nominal Impedance: | 4 ohm | 4 ohm |
| Dimensions (Dia. x D): | 7.7 x 11.47 in (196 x 291.3 mm) | 7.7 x 11.47 in (196 x 291.3 mm) |
| Availability: | Q2 2012 | Q2 2012 |
| MSRP: | $799.95/pair | $599.95/pair |
Availability
Available in white or titanium finish, with sport grille or classic grille. Sold as a pair. Mounting clamps are sold in pairs (separately). 
