If your older type Klipsch ProMedia 2.1 system has a broken speaker terminal(s) for the subwoofer's satellite speaker output, this new terminal can replace that. This terminal is for ProMedia 2.1 subwoofers which have a power switch on the back of the sub.  I sell a speaker terminal block for the newer version of ProMedia 2.1 in a separate listing, (please check my ebay store). In one photo you can compare the smaller, newer version's connector plug to this listing's older version plug. 

You will need to remove the original speaker terminal block, attached with thick double-sided foam tape, which may be brittle and/or stuck to the panel. You will need to cut or scrape away the original tape so that this terminal can mount flush to the panel for an airtight seal. A heat gun or hair dryer can soften the adhesive for you. After mounting the replacement speaker terminal block, add a bead of caulk or Goop-type clear adhesive on the inside side of the panel around the edge of the terminal to make an air-tight seal.

Two  pairs of 3 mm steel bolts and lock-nuts are included to mount this terminal to the panel. The original screws will not be reused.

International buyers, I can credit or refund $3 toward your shipping cost.