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JBL MA704, 4 Channel Full Range Marine Amplifier - 280W
Weather-resistant & high-performance marine amplifiers
New weather-resistant & high-performance JBL Marine amplifiers deliver impressive power from a compact chassis designed to withstand outdoor environments. Available with 4-channel and 5-channel outputs. JBL Marine amplifiers incorporate our latest amplifier topology that includes selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment for precision system tuning. Engineered for harsh marine conditions, with power and performance to meet the needs of any outdoor audio system, JBL Marine amplifiers are the perfect match for all of your JBL marine products.
Compact size
JBL Marine amplifiers feature a slim chassis and a small footprint to allow for installation in tight spaces
High- and low-level inputs
Speaker-level and low-level inputs let JBL Marine amps integrate with just about any audio input.
Selectable Output and Variable Adjustment Crossovers
JBL Marine amps feature selectable all-, high-, or low-pass crossovers with variable electronic frequency adjustment to allow for fine-tuning multiple system configurations.
Product Value
JBL power and performance at an affordable price point
Cosmetic Appeal
Product family look and feel to meet the needs of our JBL customers
Conformal-Coated PCB
JBL Marine amplifiers are engineered to withstand harsh marine conditions, with fully “marinized” circuit boards to ensure flawless power delivery, year after year
Variable Crossovers
Onboard 12dB electronic crossovers, with selectable full-range, high-pass & low-pass switching, provide tuning options for systems of any size
Big Dynamic Power
Output power is perfectly matched to meet the needs for your JBL marine products
| Weather Resistance | Conformal-Coated |
|
Number of Channels |
4 |
|
Class |
D |
|
Peak Power Rating (Watts) |
|
|
RMS Power Rating (Watts x Channels) - 4 Ohms |
70 x 4 |
|
RMS Power Rating (Watts x Channels) - 2 Ohms |
100 x 4 |
| Bridged RMS Power Rating (Watts x Channels) | 200 x 2 |
| Minimum Impedance Unbridged (Ohms) |
2 |
| Minimum Impedance Bridged (Ohms) |
4 |
| THD at Rated RMS Power |
1.0% |
| Bulit-in Crossover - Low Pass |
Yes |
| Built-in Crossover - High Pass |
Yes |
| High Pass Crossover Frequency (Hz) |
32-320Hz |
| Low Pass Crossover Frequency (Hz) |
32-320Hz |
| Signal-to-Noise Ratio |
85dB |
| Bass Boost |
|
| Bass Remote Included |
|
| Fuse Rating | 60A |
| CEA-2006 Compliant | Yes |
| Maximum Power Wire Gauge Size | 4 Gauge |
| Warranty | 1 Year |
| Weather Resistance | Conformal-Coated |
|
Number of Channels |
4 |
|
Class |
D |
|
Peak Power Rating (Watts) |
|
|
RMS Power Rating (Watts x Channels) - 4 Ohms |
70 x 4 |
|
RMS Power Rating (Watts x Channels) - 2 Ohms |
100 x 4 |
| Bridged RMS Power Rating (Watts x Channels) | 200 x 2 |
| Minimum Impedance Unbridged (Ohms) |
2 |
| Minimum Impedance Bridged (Ohms) |
4 |
| THD at Rated RMS Power |
1.0% |
| Bulit-in Crossover - Low Pass |
Yes |
| Built-in Crossover - High Pass |
Yes |
| High Pass Crossover Frequency (Hz) |
32-320Hz |
| Low Pass Crossover Frequency (Hz) |
32-320Hz |
| Signal-to-Noise Ratio |
85dB |
| Bass Boost |
|
| Bass Remote Included |
|
| Fuse Rating | 60A |
| CEA-2006 Compliant | Yes |
| Maximum Power Wire Gauge Size | 4 Gauge |
| Warranty | 1 Year |
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to