2. Use the arrow keys to navigate to the "Speaker Setup" menu and press "Enter."
3. Use the arrow keys to navigate to the "Front" speaker setting and press "Enter."
4. Use the arrow keys to select "Large" or "Small" for the front speakers, depending on their size. Press "Enter."
5. Use the arrow keys to navigate to the "Surround" speaker setting and press "Enter."
6. Use the arrow keys to select "Large" or "Small" for the surround speakers, depending on their size. Press "Enter."
7. Use the arrow keys to navigate to the "Center" speaker setting and press "Enter."
8. Use the arrow keys to select "None" for the center speaker. Press "Enter."
9. Use the arrow keys to navigate to the "Subwoofer" speaker setting and press "Enter."
10. Use the arrow keys to select "Yes" or "No" for the subwoofer, depending on whether you have one connected. Press "Enter."
11. Press the "Setup" button again to exit the setup menu.
Your Denon AVR-1508 will now only play sound through the front and surround speakers.