AVS Addicted Member
Join Date: Oct 2001
Location: Monterey Park, CA
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Your Marantz is an 'integrated amp', which means that it contains two sections, a pre-amp and a power amplifier, in one chassis. These two sections are connected by those staple-shaped jumpers.
If you remove the jumpers and run interconnects from the pre-amp output to the line level inputs (RCA jacks) on your subwoofer, you will be sending an unamplified signal to the subwoofer. The subwoofer will keep the low frequencies for itself to reproduce, and pass the higher frequencies back to the Marantz. So you have to run interconnects from the subwoofer's line level outputs right back to the amplifier inputs on the Marantz. The signal still goes from the pre-amp to the power amplifier, but it makes a quick detour to have the bass frequencies filtered out.
The subwoofer's amplifier will amplify the lower frequencies, and the Marantz's amplifier will amplify the higher frequencies. You won't need to change the way your CD player is connected to the Marantz. However, you will need long interconnects to run from the Marantz to the subwoofer and back. You won't be using the speaker connections on the back of the subwoofer.