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Experience rich, detailed Infinity sound without crowding your room with bulky speakers. The ERS 110II, sold individually, installs directly in your wall or ceiling — its flush-mount design and paintable grille makes it virtually disappear into your room. And Infinity has outfitted this clever speaker with advanced technologies, so you don't have to sacrifice performance for the convenience of invisible speakers.

The ERS 110II features a 6-1/2" woofer and 3/4" tweeter, both made of an exclusive Infinity driver material known as C.M.M.D.™. Stiff yet responsive, C.M.M.D. offers warm, resonance-free performance across the entire audio spectrum. It's the same material used on Infinity's flagship Prelude™ loudspeakers, costing thousands of dollars a pair. Plus, the ERS 110II includes a proprietary waveguide design that helps disperse sound evenly throughout your room.

The circular design of the ERS 110II makes it a popular choice for ceiling placement, but it's great for in-wall use, too. This stealth speaker is ideal for clutter-free multi-room audio, and also does a great job in an invisible home theater setup. Piece together your own voice-matched in-wall speaker system using Infinity's high-performance ERS speaker line.

The ERS 110II is designed for easy installation. It features mounting clamps that swing out and securely grip your ceiling from the inside. An optional in-ceiling bracket is recommended for installing the ERS 110II in a new home under construction (or in a room that's undergoing major renovation).

Free installation guides from Crutchfield
When you buy in-wall or in-ceiling speakers from Crutchfield, you'll also receive copies of our in-depth speaker and wire installation guides, free of charge.

Got wire?
Most speakers don't include any. Learn more about in-wall wiring at the Crutchfield Learning Center.
Shop our selection of in-wall speaker wire.

Product Highlights:

  • sold individually
  • 3/4" C.M.M.D. tweeter
  • 6-1/2" C.M.M.D. woofer
  • handles up to 125 watts
  • frequency response 47-22,000 Hz (±3dB)
  • sensitivity 89 dB
  • 8-ohm impedance
  • acoustical waveguide for wide sound dispersion
  • paintable speaker grilles
  • cutout dimensions: 7-13/16" diameter
  • mounting depth: 3-3/8"
  • warranty: 5 years
  • Our 60-day money-back guarantee

Infinity ERS 110II Reviews

Hands-on research

What's in the box?

Download owner's manual

  • White in-ceiling speaker
  • White grille
  • Plastic paint shield
  • Mounting cutout template
  • Owner's Guide
  • Warranty information

Features and Specs

Enclosure Type In-ceiling
Video Shielded No
Tweeter Dome
Midrange Size ---
Woofer Size 6.5
Woofer Composition C.M.M.D.
Woofer Surround Rubber
Power Range (Watts) 10-125
Sensitivity 89 dB
Impedance (Ohms) 8
Frequency Response 47-22kHz
Connector Type Spring clip
Bi-Amp Inputs No
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Mounting Options


Ceramic Metal Matrix Diaphragm (C.M.M.D.): Infinity's C.M.M.D. technology delivers accurate performance with dramatically reduced distortion for incredibly lifelike sound. Additionally, the C.M.M.D. drivers can withstand extreme temperatures, moisture, humidity and sunlight.

Woofer: The 6-1/2" C.M.M.D. cone woofer virtually eliminates coloration due to cone flexing, resulting in less distortion and superior accuracy. For a smoother response and improved durability, the woofer uses a rubber surround.

Tweeter: The speaker has a 3/4" C.M.M.D. dome tweeter that offers superior stiffness and damping compared to traditional metal domes.

Waveguide Design: The ERS 110 incorporates a proprietary waveguide design to ensure smooth distribution of sound throughout the listening area.

Mounting Options

Installation: The round shape and flush-design allows the ERS 110 to mimic the look of a recessed lighting fixture. The speaker requires a cutout of 7.799" and a depth of 3.344" (including the thickness of the drywall). The speaker frame has a diameter of 9.254". Once the hole is cut, the speaker can be dropped in and the locking tabs can be tightened, allowing you to secure the speaker to the drywall without any extra assembly.

Note: For new construction, you will need to purchase the optional IW6R RIF rough-in-frame kit (item 108IW6RRIF, package of two brackets is item 108110RIF).

Paintable: The grille and flange can be painted, allowing this speaker to match any decor.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.