New JBL MA4505 5 Channel Marine Amplifier - 1800W

JBL MA4505 5 Channel Marine Amplifier - 1800W



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MA4505 5 Channel Marine Amp

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MA4505 5 Channel Marine Amplifier 

Weather-resistant & high-performance marine amplifier

The 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.


  • 1 amplifier
  • Stainless steel mounting hardware
  • Rubber inserts
  • 4 High-level input adapters
  • 3 spare fuses
  • 2 2-color brand stickers
  • Quick start guide

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to


  • Watts: 1800w
  • Channels - Available: 5
  • Bridgeable: Yes
  • Box Dimensions: 5"H x 9"W x 18"L WT: 10.15 lbs
  • UPC: 050036346337

Owner's Manual (pdf)
Brochure (pdf)


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JBL MA4505 5 Channel Marine Amplifier - 1800W

JBL MA4505 5 Channel Marine Amplifier - 1800W

MA4505 5 Channel Marine Amp

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