Infinity ERS 110DT

In-ceiling stereo input speaker

  • Infinity ERS 110DT


  • Infinity ERS 110DT


  • Infinity ERS 110DT

    Grille off

  • Infinity ERS 110DT



Our take on the Infinity ERS 110DT

by Tom Mathew

No room for speakers? No problem. Infinity's ERS 110DT in-ceiling speaker, sold individually, lets you enjoy rich, dynamic sound without taking up a single inch of floor space. The speaker installs directly in your ceiling, and features a paintable frame and grille, so it will virtually vanish into your decor. And thanks to the ERS 110DT's innovative design, you get stereo sound from just one speaker. It's ideal for areas where installing a pair of stereo speakers isn't practical, like a hallway, bathroom, or kitchen.

The ERS 110DT has inputs for both left and right channels and two 3/4" tweeters (one per channel), so you'll hear both halves of the stereo music mix. And a 6-1/2" woofer with dual voice coils handles the mids and bass. All of the drivers are made with Infinity's exclusive Ceramic Metal Matrix Diaphragm (C.M.M.D.™) material. C.M.M.D. woofers and tweeters are stiff yet responsive for warm, resonance-free performance across the entire audio spectrum. It's the same driver material used on Infinity's flagship Prelude™ loudspeakers, costing thousands of dollars a pair.

The ERS 110DT 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 110DT in a new home under construction (or in a room that's undergoing major renovation).

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Shop our selection of in-wall speaker wire.


  • sold individually
  • stereo input speaker
  • dual 3/4" C.M.M.D. tweeters
  • 6-1/2" C.M.M.D. woofer
  • handles up to 130 watts
  • frequency response 47-22,000 Hz (±3dB)
  • sensitivity 88 dB
  • 8-ohm impedance
  • acoustical waveguide for wide sound dispersion
  • paintable speaker grilles
  • cutout dimensions: 8-1/16" diameter
  • mounting depth: 3-9/16"
  • warranty: 5 years
  • Our 60-day money-back guarantee

Priced each


Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Enclosure Type
Video Shielded
Midrange Size
Woofer Size
Woofer Composition
Woofer Surround
Power Range (Watts)
up to 130
88 dB
Impedance (Ohms)
Frequency Response
Connector Type
Spring Clip
Bi-Amp Inputs
Stereo input
Parts Warranty
5 Years
Labor Warranty
5 Years
Product Research
What's in the box?

Download owner's manual

  • 1 White in-wall/ceiling speakers
  • 1 White grilles
  • 1 Plastic paint shield
  • Cardboard mounting cutout template
  • Infinity Logo Sticker
  • Owner's Guide
  • Warranty information

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 open the box, verify contents, 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.

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. dual-voice coil 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.

Tweeters: The speaker has dual 3/4" C.M.M.D. dome tweeters that offer superior stiffness and damping compared to traditional metal domes.

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

Mounting Options

Installation: The round shape and flush-design allow the ERS 110DT to mimic the look of a recessed lighting fixture. This speaker is a single stereo speaker which makes it a perfect install in bathrooms, hallways, and any other area where you do not have room, or the desire, to install more than one speaker. The speaker requires a cutout diameter of 8.066" and a depth of 3.519" (including the thickness of the drywall). 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 rough-in-frame kit (item 108IW6RRIF).

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

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Add accessories for the Infinity ERS 110DT

UL-listed speaker wire is designed to be run through walls and is building code compliant. Most speakers don't include speaker wire. See all categories & accessories

AudioQuest FLX-14/4 14-Gauge 4-Conductor In-Wall Speaker Cable UL-approved for in-wall use; direct-burial rated (250 feet)
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Infinity IW6RRIF Rough-in frame for select Infinity in-ceiling speakers
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For a more in-depth review and enhanced detailed information on the Infinity ERS 110DT, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_108ERS110D/Infinity-ERS-110DT.html ).