Hello,

   The only Spider IV amplifier that has speaker outputs is the Spider IV 150.  See the following links for more information:

  Spider IV (75, 120, 150, 150 HD) Factory Reset, Presets, and F.A.Q.s

  http://line6.com/community/docs/DOC-1538

  Cabinet Connection and Ohm F.A.Q.

  http://line6.com/community/docs/DOC-4410

  Video Tutorial: Line 6 Head and Cabinet Connections

  http://line6.com/community/docs/DOC-1565

  Please let us know if you need further assistance, or close out the ticket as “answered” if your situation has been resolved.