Features

Overview: The Bose FreeSpace 3 Series I Acoustimass module is a surface-mount, 70/100 volt subwoofer designed for bass augmentation for new and existing background music systems. Featuring a 5.25" woofer driver that can deliver deep bass down to 40 Hz without audible distortion, and includes connections for 2 or 4 Bose FreeSpace 3 satellite speakers. Connections are provided for 70/100 volt inputs as well as a stereo/mono input that bypasses the internal transformer, running the sub as a 6Ω speaker.

Mounting: Housed in a durable, high-density wood composite with PVC laminate enclosure, the Series I Acoustimass sub is designed primarily to be surface-mounted to a wall, but can also sit on an open floor space. A wall-mount bracket system is provided with a plate that gets mounted to a wall while the sub has a corresponding plate built into its side. The two plates simply slide together and are locked into place with a spring loaded catch. This catch can be depressed, allowing the speaker to slide back off of the bracket for easy removal.

70/100 Volt: The FreeSpace 3 Series I Acoustimass module is rated for 200 watts RMS (800 peak) and can be used with both 70 and 100 volt systems. With the transformer bypassed, it can handle 50 watts RMS (200 watts peak) per stereo channel or 100 watts RMS (400 watts peak) in mono. Tap settings are made at the back of the speaker, along with all input and output connections. A snap-on, rear-panel cover-plate is provided to hide the connection and tap panel. Selecting a "tap" is made by connecting the provided jumper wire to the appropriate set-screw terminal for the desired wattage, with the default connection on the 200 watt tap. The sub also includes 2 sets of speaker input terminals for powering it from a stereo or mono source, bypassing the transformer. Set-screw terminals are also provided to run 2 or 4 Bose FreeSpace 3 satellite speakers, either surface or flush mount types, in conjunction with the sub for a Bose "system". Jumper wires come already attached to these terminals for 70/100 volt use, but get removed if bypassing the internal transformer. The FreeSpace 3 satellite speakers are 70/100 volt compatible, but don't have a transformer built into them, instead, relying on the subwoofer's transformer.

Specifications:

• Frequency Response (+/- 3 dB): 50 Hz - 230 Hz
• Frequency Range (-10 dB): 40 Hz - 315 Hz
• Nominal Dispersion: Omni-directional below 200 Hz
• Recommended High-Pass Filter: 40 Hz high-pass
• Overload Protection: PTC
• Power Handling:
  • 70/100 Volt: 200W (800 W peak) mono
  • Low Impedance: 50 W (200 W peak) per channel stereo or 100 W (400 W peak) mono
• Sensitivity: 76 dB SPL per channel, 79 dB SPL in mono
• Maximum SPL: 96 dB SPL (102 db SPL peak) per channel, 102 dB SPL (108 dB SPL peak) mono
• Nominal Impedance: 6Ω (transformer bypassed)
• Transformer Taps (70/100 V): 25 W, 50 W, 100 W, 200 W
• Driver: 5.25" dual voice coil woofer
• Enclosure: High-density wood composite with solid color PVC laminate
• Environmental: Indoor use only
• Connectors: Set-screw terminal strip
• Dimensions: Width - 8.625" w/bracket, Height - 14.0", Depth - 12.750"
• Weight: 17.5 lbs. w/bracket