In-ceiling speakers

  • NHT iC4

    Grilles included, one pictured

  • NHT iC4

  • NHT iC4

Item# 228IC4
This item is no longer available to purchase.
Contact us for other options
Call   Email   Chat

Our take on the NHT iC4

by Marshall Chase

25 years of audio know-how in every in-ceiling speaker

NHT is renowned for exceptional sound. Even their name invites you to "Now Hear This." The iC4 is the "big daddy" of the NHT in-ceiling lineup. It packs a cluster of three 1" fluid-cooled aluminum dome tweeters to weave a blanket of sound over your space so you don't just get a "sweet spot" you get a sweet room. The tweeter array is centered inside of an 8" aluminum woofer to bring the subtleties of musical instruments and dialogue to life, as well as the power of percussion instruments and percussive movie soundtracks. This array is packaged in a slim, circular design that mounts discreetly in your ceiling. It all adds up to a high-fidelity speaker that can be placed where traditional speakers can't go, or would simply be in the way. For optimal performance, give them plenty of clean power, and you'll be rewarded with rich sonic goodness.

The beauty's in the details

You'll love the design details of these NHTs. Their super-accurate aluminum drivers deliver wide frequency response and are mounted securely in a low-resonance frame. Moisture-resistant materials and a gasketed mounting ring let you install these speakers in any room in the house, including kitchen and bath, worry-free. The spring-loaded mounting cams help ensure that the iC4s will install firmly without coming loose or cracking the surrounding drywall over time, so you can expect years of fine performance. Just prepare the opening in your ceiling and run UL-rated wiring from your receiver and you can secure this flush-mount speaker with a few turns of a screwdriver. And you can paint the white matte grilles to match any décor.

An optional iCB8 in-ceiling bracket is recommended for installing the iC4 in a home with new construction.

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.


  • array of three 1" aluminum dome tweeters for wide sound dispersion
  • long-throw 8" aluminum woofer
  • handles up to 150 watts
  • moisture-resistant materials allow safe use in bathrooms, kitchens, and saunas
  • not recommended for outdoor use
  • frequency response 40-20,000 Hz (±3dB)
  • sensitivity 87 dB
  • 8-ohm impedance
  • paintable aluminum speaker grilles
  • cutout dimensions: 10-1/16" diameter
  • mounting depth: 4-13/16"
  • warranty: 5 years
  • Our 60-day money-back guarantee

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)
87 dB
Impedance (Ohms)
Frequency Response
Connector Type
Spring posts
Bi-Amp Inputs
Parts Warranty
5 Years
Labor Warranty
5 Years
Product Research
What's in the box?

Download owner's manual

  • 2 In-ceiling speakers
  • 2 Grilles
  • 2 Diffusers
  • 8 Mounting screws
  • Dum-dum
  • Grille removal-tool
  • 2 Cardboard templates/paint shieds
  • Owner's Manual
  • "Improve Your In-Wall Performance" sheet
  • Product Registration Card

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.



Overview: The NHT iC4 in-ceiling speaker features an all aluminum version of NHT's patented 3-tweeter array that produces a flat frequency response up to 60° off-axis and creates a consistent sound-field. The iC4 is recommended for the most critical fixed-installation and distributed sound applications in your home, office or in commercial installations. It is suitable for the highest performance home theaters, high end stereo system, dens, dining rooms, master bedrooms, patios where high quality sound is desired.

2-Way Coaxial/3-Tweeter Array: The NHT iC4 in-ceiling speaker is a very high quality 2-way system; employing an 8" long-throw, anodized aluminum woofer and coaxially mounted tweeter array, which consists of three 1" fluid-cooled aluminum dome tweeters.

Crossover Network: The drivers are managed by a very high quality 2nd order crossover network (1.6kHz, 18dB/oct HP, 6dB/oct LP).

Diffuser: A proprietary diffuser is also included for inside the grille center, which provides a smooth response when a listener is located directly under the speaker.

Moisture Resistant: The driver units are moisture resistant, the frame is polypropylene, all the hardware is stainless steel, and the mounting lip has a foam gasket. This allows the in-ceiling speaker to be installed in moisture prone interior environments, such as bathrooms, indoor swimming pools, and sauna rooms.

Note: Installation in outdoor locations is not recommended.

Spring Post Terminals: The in-ceiling speaker features gold-plated, spring-post terminals which will maintain contact with the speaker wire over the life of the installation.

Note: 16-AWG, 2-conductor in-ceiling speaker wire is recommended for runs of 10 feet or less, with heavier gauge cable used for longer runs.


Dog-Ear Clamping System: The NHT iC4 in-ceiling speaker has a fail-proof, 4-point spring-loaded, dog ear clamping system that grabs the ceiling's surface with integrity and simplicity, even when the mounting surface is uneven. The spring-loaded clamps maintain the bezel's pressure and seal with the ceiling surface and therefore eliminates the speaker from coming loose and paint lines from cracking over the life of the installation. This feature is important because typical sheetrock compresses when clamped; non-spring loaded, rigid clamping systems will become loose over time and begin to vibrate and the air seal can leak causing the speaker to lose bass and crack the paint line.

Note: NHT in-ceiling loudspeakers are designed for in-ceiling installation between standard wood joists. The four spring-loaded dog ear clamps can accommodate ceilings 0.25" to 1.5" thick.

Cut-Out Template: A convenient cardboard template for the in-ceiling speaker's cutout is included to make installation location and retrofit cutting easier.

Paintable: The iC4 is painted with a neutral white primer and may be painted to match your ceiling decor with typical latex paints. A convenient paint shield is included to protect the drive units in the speaker frame. Take care not to cover the grille's tiny perforated holes, which are essential to sound performance.

Note: Do not attempt to paint the black baffle surface (which houses the drivers). Its black finish prevents the speaker's black drivers from being visible once the grille is attached.

New Construction Bracket (optional): For new construction, NHT makes the ICB8 (228ICB8, sold separately); a new construction framing bracket which lets you accurately place the iC4 in-ceiling speakers location during the framing stages of construction much like a recessed lighting fixture. The iCB8 provides a lip that the sheetrock or wall finishing crew uses to mount the NHT iC4, once the ceiling is installed.

Note: The iCB8 is not required for retrofit installations in existing ceilings.

Be the first to review this product
Great Gear Giveaway rewards card

Submit a review and you will be entered to win a $150 gift card

Crutchfield Great Gear Giveaway Official Sweepstakes Rules

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Add accessories for the NHT iC4

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-16/2 16-Gauge 2-Conductor In-Wall Speaker Cable UL-approved for in-wall use; direct-burial rated (125 feet)
23 people say
Your Price: $99.99
Add to Cart
AudioQuest FLX-16/4 16-Gauge 4-Conductor In-Wall Speaker Cable UL-approved for in-wall use; direct-burial rated (125 feet)
6 people say
Your Price: $159.99
Add to Cart
AudioQuest FLX-14/2 14-Gauge 2-Conductor In-Wall Speaker Cable UL-approved for in-wall use; direct-burial rated (125 feet)
48 people say
Your Price: $129.99
Add to Cart
AudioQuest FLX-14/4 14-Gauge 4-Conductor In-Wall Speaker Cable UL-approved for in-wall use; direct-burial rated (125 feet)
2 people say
Your Price: $219.99
Add to Cart
Russound Flexbox For in-ceiling speakers
Your Price: $199.99
Add to Cart
Niles SS-4 4-pair speaker selector
19 people say
Your Price: $129.99
Add to Cart
Niles SS-6 6-pair speaker selector
7 people say
Your Price: $174.99
Add to Cart
Russound SS-4.2 4-pair speaker selector
5 people say
Your Price: $119.00
Add to Cart
Russound SS-6.2 6-pair speaker selector
1 person says
Your Price: $159.00
Add to Cart
Niles SSVC-2 2-pair speaker selector with volume control
4 people say
Your Price: $249.99
Add to Cart
Russound SDB-6.1 High-power 6-pair speaker selector with volume control
Your Price: $499.99
Add to Cart
Niles VCS HUB8 8-speaker pair connecting block
6 people say
Your Price: $79.99
Add to Cart
Niles SVC100K Sliding stereo volume control with impedance magnification
Your Price: $129.99
Add to Cart
Niles VCS100K Stereo volume control with impedance magnification
2 people say
Your Price: $99.99
Add to Cart
Russound ALTx-2 Stereo volume control with impedance matching
Your Price: $39.99
Add to Cart
Russound ALTx-2D Stereo volume control with impedance matching and Decora®-style wall plate
Your Price: $39.99
Add to Cart

Why choose SquareTrade?

The #1-Rated Protection Plan

Thousands of people have reviewed SquareTrade Protection Plans — and made us #1.

5-Day Service Guarantee & Free Shipping

We'll repair or replace your item in five business days or less after we've received it, or your plan is free. And, as always, we pay for all shipping.

Protection from Normal, Everyday Use

Repairing your average mechanical or electrical failure can cost as much as buying a new device. With SquareTrade, you're covered — including parts and labor.

For a more in-depth review and enhanced detailed information on the NHT iC4, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_228IC4/NHT-iC4.html ).

Get live, personalized service from an expert

Crutchfield Advisor: Hi there.

Crutchfield Advisor: We're happy to answer questions or provide additional info about this item.

Advisors also available at 1-888-600-3963