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POLY-PLANAR  •  PO Box 409   •  Hanover, MD 21076

Tel: (410) 761-4000 • Fax: (410) 761-6274 • www.polyplanar.com

POLY-PLANAR  •  PO Box 409   •  Hanover, MD 21076

Tel: (410) 761-4000 • Fax: (410) 761-6274 • www.polyplanar.com

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ME-400 Marine Amplifier

The  ME-400  four  channel,  marine-grade  amplifier  provides  400  watts  of  crisp,  clean 
audio power.  The amplifier can be easily configured to enhance your listening pleasure.  
Both crossover circuits and high pass and low pass filters are fully adjustable so you can 
power  your  subwoofer  as  well  as  your  standard  speakers.    Gold  plated  connections 
resist  corrosion.    Rubber  mounting  feet  isolate  vibration.    Efficient  heat  sink  design 
ensures uninterrupted operation.  Built from the ground up to withstand the rigors of 
the marine environment, the ME-400 will be an outstanding addition to your vessel’s 
audio system.

Introduction

• Circuit board and connectors optimized for marine use
• Mosfet PWM power supply
• 2 ohm stable stereo outputs
• Bridgeable outputs
• Variable input level controls for each pair of channels
• Variable High-pass, Low-pass and All-pass crossover.
• Variable Bass Boost circuit
• Thermal and overload protection circuitry
• Gold-plated RCA jacks and terminals
• Rubber isolation mounting feet

ME-400 Features

PLEASE READ THIS MANUAL BEFORE  

INSTALLATION AND USING AMPLIFIER

Poly-Planar products are warranted to be free of defects in materials and workmanship 

for a period of two years. No finished goods or parts may be returned for repair or 

replacement  without  Poly-Planar  authorization.  Goods  received  for  any  reason  other 

than  out-of-box  defect  will  be  returned  freight  collect.  To  qualify  as  an  out-of-box 

defect, the product must be found defective within 30 days of retail sale. Please call 
Poly-Planar  Customer  Service  for  authorization,  which  will  take  the  form  of  an  RMA 
(Return Merchandise Authorization) number. Warranty is subject to proper installation 
and operation within published specifications. Poly-Planar will repair or replace, at its 
discretion, any unit returned to its factory and determined to be defective. Poly-Planar 

is not liable for consequential damages.

Poly-Planar Warranty

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Summary of Contents for ME-400

Page 1: ...ts Variable input level controls for each pair of channels Variable High pass Low pass and All pass crossover Variable Bass Boost circuit Thermal and overload protection circuitry Gold plated RCA jacks and terminals Rubber isolation mounting feet ME 400 Features PLEASE READ THIS MANUAL BEFORE INSTALLATION AND USING AMPLIFIER Poly Planar products are warranted to be free of defects in materials and...

Page 2: ...lower NEVER operate the amplifier without proper power and ground wire of at least 10 gauge or lower NEVER operate the amplifier without proper fusing Fuse holder must be located with in 0 5 meters from the battery This fuse is to protect the vessel not the electronics In case of a short the fuse will blow instead of the wire burning up Using other than the recommended fuse ratings at the battery ...

Page 3: ...frequency between 40Hz to 250Hz as the crossover point 2 Set to the LP Low Pass position when the amplifier is used to drive a subwoofer The frequencies above the crossover point will be attenuated at 12dB octave Permits adjustment of the crossover frequency by rotating the knob to select any frequency between 40Hz to 250Hz as the crossover point 3 Set to the FULL position when the amplifier will ...

Page 4: ...ns Remember to complete an electrical circuit the ground connection is just as important as the positive power connection Before any power connections are made disconnect the ground cable at the battery When the power supply lead memory backup lead or ground lead are extended use a 5mm 2 AWG5 or larger automotive grade cable which will withstand friction and heat to safe grade against fires occurr...

Page 5: ...l input on the amplifier Input Connections 1 Line in RCA Jacks These inputs are for line level signals from the source Always use high quality cables and DO NOT run them along side the power or speaker wires 2 Input Level Controls Two controls for adjusting the volume of each pair of channels Channels 1 2 adjust together channels 3 4 adjust together 3 Crossover Mode Switch High Pass HP lets freque...

Page 6: ...ohms per channel The minimum impedance for bridged operation is 4 ohms Connect right and left speaker wire to corresponding speaker output terminals of the amplifier Be sure to have the positive wire from the speaker connected to the positive speaker terminal of the amplifier Reversing any of these connections will result in the speaker cones moving out of phase which causes bass cancellation See ...

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