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Infinity Modulus

Home theater speaker system (Charcoal)

Item #: 108MDLSCH

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Original Price: $1,499.00

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Infinity is renowned for making speakers with natural, full-bodied sound and innovative designs, and their newest satellite/subwoofer system continues both traditions proudly. The Modulus® is a complete home theater speaker solution, combining four satellites, a low-profile center channel speaker, and a blockbusting subwoofer, all timbre-matched for seamless surround sound. Here's a speaker system capable of delivering home theater sound and your favorite music with uncanny presence and precision, wrapped up in discreet, sleekly contoured cabinets that blend stylishly with modern décor.

Each shielded satellite sports two low-distortion C.M.M.D. (Ceramic Metal Matrix Diaphragm™) drivers — a 3/4" tweeter and a 4" midrange — for perfectly integrated sound across the front and surround channels. The versatile base of each satellite serves as either a stand for shelf placement, or an ingenious wall-mount. An optional TV bracket (see "Accessories") gives you a third placement option for the front satellite pair. The shielded center channel speaker flanks the same 3/4" tweeter with dual 4" C.M.M.D. midranges, in a gracefully curved cabinet that sits comfortably above or below your TV.

The subwoofer lends serious low-frequency thunder to the proceedings with its 300-watt (RMS) amplifier and 12" C.M.M.D. woofer. You'll also love Infinity's Room Adaptive Bass Optimzation System (RABOS), which lets you fine-tune response below 100 Hz. Using the RABOS kit with SPL meter (included free, a $59.95 value) and the sub's single-band parametric EQ, you can transform boomy "one-note" bottom-end into tight, musical bass!

Power, precision, and style — the Infinity Modulus system has it all!


  • video-shielded
  • system frequency response 27-20,000 Hz (±3dB)
  • satellites and center channel handle up to 100 watts
  • 300-watt (RMS) subwoofer amp
  • RABOS kit with SPL meter included
  • 5-way binding posts
  • satellites: 5-5/8"W x 10-1/2"H x 5-1/4"D
  • center channel: 19-7/8"W x 6-3/8"H x 5-1/8"D
  • subwoofer: 14-9/16"W x 16-5/8"H x 21-3/16"D
  • warranty: 5 years

Why choose a pre-matched speaker system?

Looking for speakers that'll deliver thrilling, edge-of-your-seat surround sound? Choosing a pre-matched speaker system is one way to ensure seamless home theater performance. These systems are made up of speakers that share the same tonal characteristics — that means the sound will stay consistent as it moves from speaker to speaker around your room. Most pre-matched systems come with a subwoofer — a must-have for high-impact bass.

Infinity Modulus Reviews

Hands-on research

What's in the box?

Download owner's manual

  • 4 MS-1 satellite speakers
  • 1 MCC-1 center channel speaker
  • Powered subwoofer with removable grill
  • 15' AC cord
  • RABOS accessory kit (includes RABOS sound-level meter/Test CD/Instructions (in CD jewel box)/sheet with 6 measurement templates/adjustment key/plastic width selector/9V alkaline battery/fabric carrying case with Infinity logo)
  • Wall mounting template with level built-in
  • Manual
  • Customer survey
  • Warranty sheet

Features and Specs

Enclosure Bass reflex
Video Shielded Yes
Pieces in System 6
Color Charcoal
Tweeter Dome
Midrange size (inches) 4
Woofer size (inches) 12
Woofer Composition CMMD
Woofer Surround Rubber
Impedance (Ohms) 8
Connector Type 5-way post
Mounting Bracket Included Yes
Recommended Stand Height (inches) ---
Parts Warranty 5 Years
Labor Warranty 5 Years
RMS Power Range (watts) 15-100
Subwoofer RMS Power (watts) 300
Main Speakers (inches) 9-3/4H x 5-5/8W x 5-3/4D
Center Speaker (inches) 6-3/8H x 19-7/8W x 5-1/8D
Surround Speakers (inches) 9-3/4H x 5-5/8W x 5-3/4D
Subwoofer (inches) 16-5/8H x 14-9/16W x 21-13/16D

Product Research

Inputs and Outputs
Additional Specifications
Warranty Note


Components: The Infinity Modulus Home Theater speaker system consists of four identical video-shielded satellites (MS-1), a matching video-shielded center channel (MCC-1), and a 12" powered subwoofer (MSW-1). All speakers are perfectly timbre matched. The four satellites and center channel are two way acoustic suspension speakers in a composite enclosure with brushed metal accents. The satellites also have matching brushed metal stands/wall mounting brackets. The subwoofer is front firing and has a downward facing port.

CMMD: The Modulus system uses Ceramic Metal Matrix Diaphragms, CMMD. The light but rigid properties of these drivers deliver accurate musical reproduction, eliminating coloration due to cone breakup and dramatically reducing distortion. The CMMD drivers also don't tend to deteriorate when exposed to moisture, sunlight, or extreme temperature.

RABOS: The powered subwoofer includes Infinity's Room Adaptive Bass Optimization System (RABOS). RABOS is a single band parametric equalizer with adjustable level, center frequency, and width designed to tame any problematic room-bass resonances below 80Hz.

RABOS Kit: The RABOS kit is used to adjust the RABOS circuit on the subwoofer for optimizing the bass response in any given room. Included are the RABOS sound-level meter, test CD, instructions (in CD jewel box), sheet with 6 measurement templates to plot the room's acoustics, adjustment key for use with Infinity RABOS-equipped loudspeakers (small screwdriver), plastic width selector, 9V alkaline battery, and fabric carrying case with Infinity logo.

Satellite Mounting: The four satellite speakers have combination stand/brackets that allow them to be placed on any flat surface or mounted to a wall. When wall mounted, the bracket is adjustable and the speaker can be swiveled left or right +/- 75 degrees (approximate), tilted slightly up, or tilted down about 45 degrees.

Wall Mount Template: Each wall mounting bracket has a mounting plate that mounts to the wall, then the rest of the bracket bolts to the plate once it's mounted. There is also a template with a built-in level to easily mount the plate so that the speaker is level.

Auto Power On/Off: The power to the subwoofer amplifier automatically turns on when it senses a program signal and turns off when no signal is present for about ten minutes.

MS-1 Satellites:

  • Dimensions (wall mounted): Width=5.625", Height=9.75", Depth=5.75"
  • Dimensions (on stand): Width=5.625", Height=10.45", Depth=5.25"
  • Video Shielded: allows placement near a TV without distortion of the TV picture
  • Midrange: 4" CMMD cone driver
  • Tweeter: 3/4" CMMD dome tweeter
  • Frequency Response: 100Hz-20kHz (+/-3dB)
  • Sensitivity: 86dB
  • Impedance: 8 ohms
  • Crossover: 2500Hz, 12dB/octave
  • Connections: gold-plated 5-way binding posts; will accept bare wire, pin connectors, spade connectors, banana plugs, and dual banana plugs
  • Built-In Wall Mounting System: integral bracket can be used for wall mounting or as a stand. If you choose to wall mount the speakers, mounting them to a wall stud or wall anchor is recommended
  • Removable Grille: includes a removable black cloth grille
  • Weight: each satellite weighs 4 pounds

MCC-1 Center Channel:

  • Dimensions: Width=19.875", Height=6.375", Depth=5.125"
  • Video Shielded: allows placement near a TV without distortion of the TV picture
  • Midranges: Two 4" CMMD cone drivers
  • Tweeter: 3/4" CMMD dome tweeter
  • Frequency Response: 80Hz-20kHz (+/-3dB)
  • Sensitivity: 88dB
  • Impedance: 8 ohms
  • Crossover: 2500Hz, 12dB/octave
  • Connections: gold-plated 5-way binding posts; will accept bare wire, pin connectors, spade connectors, banana plugs, and dual banana plugs
  • Removable Grille: includes a removable black cloth grille
  • Weight: the center channel weighs 8 pounds

MSW-1 Subwoofer:

  • Dimensions: Width = 14.535", Height = 16.625", Depth = 21.775"
  • Driver: 12" CMMD, front firing
  • Amplifier: 300-watt RMS amplifier
  • Surround: for a smoother response and improved durability, the woofer uses a rubber surround
  • Port: down-firing bass port allows deep bass with high acoustic efficiency and low distortion
  • Auto On/Off: automatically turns the subwoofer on when it senses a program signal and turns the amplifier off when no signal is present for about ten minutes
  • Video Shielded: the subwoofer is magnetically shielded and can be safely placed near your television
  • Removable Grille: includes a removable black cloth grille
  • Weight: the subwoofer weighs 42 lbs.


Subwoofer Front Panel:

  • Level Control: rotary level control; glows green when sub is on, glows red when sub is in standby mode, and doesn't glow when the main power switch is turned off

Subwoofer Rear Panel:

  • Line Input: RCA inputs, left and right
  • Input Select: speaker level or line level
  • Low Pass Filter: turns the internal crossover on or off; allows you to use the receiver's built-in crossover
  • Phase Switch: 0 or 180 degrees; allows for flexible sub placement
  • RABOS: turns the RABOS circuit on/off
  • Frequency: center frequency adjustment for RABOS parametric equalizer
  • Level: adjusts the amount of effect of the RABOS circuit, -14dB-0dB
  • Width: adjusts the frequency width of the RABOS parametric equalizer, 5-50% of an octave
  • Power Switch: Off/standby

Inputs and Outputs

Subwoofer Rear Panel:

  • Speaker Level Input/Output: binding posts that are best used with banana plugs; a collar prevents use of spade connecters
  • Line In: gold-plated RCA stereo pre-amp level input

Additional Specifications

  • Recommended Amplifier Power: 15-100 watts RMS per channel
  • Satellite Frequency Response: 100Hz-20kHz (+/-3dB)
  • Satellite Crossover Point: 2500Hz/12dB/octave
  • Satellite Sensitivity: 86dB
  • Satellite Impedance: 8 ohms
  • Center Channel Frequency Response: 80Hz-20kHz (+/-3dB)
  • Center Channel Crossover Point: 2500Hz/12dB/octave
  • Center Channel Sensitivity: 88dB
  • Center Channel Impedance: 8 ohms
  • Overall  System Frequency Response: 27Hz-20kHz (+/-3dB)

Warranty Note

Warranty: The warranty on all of the drivers and the subwoofer amplifier is 5 years parts and labor.

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