





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.
Features

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
Specs & Downloads
Item# MA4505
Description
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.
General Specifications
- Max Power
- 1800W Peak
- RMS Power Output @ 2Ω (subwoofer)
- 500W x 1, <1% THD+N
- RMS Power Output @ 4Ω (subwoofer)
- 320W x 1, <1% THD+N
- RMS Power Output @ 2Ω (full-range)
- 65W x 4, <1% THD+N
- RMS Power Output @ 4Ω (full-range)
- 45W x 4, <1% THD+N
- RMS Power Output @ 4Ω Bridged (full-range)
- 130W x 2, <1% THD+N
- Signal-to-Noise Ratio (sub)
- >80dB (ref 1W output @ 4Ω)
- Signal-to-Noise Ratio (full-range)
- >80dB (ref 1W output @ 4Ω)
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