Q-Logic Custom Enclosures models ending with "LD" are Pre-Loaded with Rockford Fosgate Subwoofers.  All you need to do is connect an Amplifier and you're up and running!  Save Time and Money and Order "Loaded Versions" of your Custom Enclosure.

Product Code: CALYPSO Price: Check Latest Pictured with KIT-not included Clarion Calypso SIRIUS Satellite Radio tuner Details: compact plug-and-play SIRIUS Satellite Radio tuner    ar kit and/or home kit required for operation (sold separately)    backlit LCD screen    readout displays channel info, category, preset bank and number, artist, and song title    0-9 number pad allows direct channel access    brightness/contrast adjustments    30 channel presets    Channel Lock lets you lock out a channel (so that it can only be accessed by entering a code)    "Memory Function" — store info for up to 20 songs; the PNP will alert you when a saved song is playing anywhere on the SIRIUS dial    search by category, channel, artist, or song title (displays all artists or song titles currently playing on every channel)   wireless remote control    tuner dimensions: 4-1/2"W x 2-15/16"H x 1-1/2"D