Connect 4 channels of an 8 channel amp to a sub?

[Mattt9998]

Hello, and thank you in advance,

I am putting a buget system in my boat that consists of the following…
Fusion head unit
4 Skar audio 6.5 speakers
Rockville RXM8BTW 8 Channel 1500 Watt Marine/Boat Amplifier

• RMS Power Output at 4 Ohms: 65 Watts x 8 Channels CEA Rated
• RMS Power Output at 2 Ohms: 95 Watts x 8 Channels
• RMS Bridged Power Output at 4 Ohms: 190 Watts x 4 Channels
• Peak Bridged Power Output at 4 Ohms: 380 Watts x 4 Channels.
• Configurable to 8-6-4 channels or 6.1 or 4.2 System

Rockville MS12LW 12” free air sub

My question is can I bridge 4 channels to the sub? Connect 2 sets of wires to the sub? The other 4 channels would run the 4 Skar audio full range speakers.

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[staan]

if you have a 4ohm dvc sub you can bridge 4 channels into 2 and use each of the 2 bridged channels to each voice coil. play a test tone and make sure the voltages are exactly matched per bridged channel