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InwallTech® HD-650.1C

InwallTech&reg: HD-650.1C High Definition 6 1/2" Virtually Invisible Ceiling Speakers -- Trimless Version
HD-650.1C High Definition Ceiling Speakers --Trimless

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Compare at: $599.00
Sale Price: $379.00 pair
Sale Extended Thru: 10-29-20
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Index Score: 90.5

Stock Status:
In Stock

Availability: Usually ships same day before 3 Eastern Time!
Product Code: HD650_1C

Description Technical Specs Frequently Asked Questions

Ultimate High Performance Audiophile Loudspeakers

Advanced High End Theater
Audiophile Music Listening Areas
Designer Interiors

Premium, luxury, preeminent, supreme, unparalleled, paramount, primo, leading, first-class, finest, precious, life-like, extravagant, etc.

Get ready because you’re looking at the most performance you can get out of an inwall design before paying exotic prices. This line delivers luxury fulfillment of life-like audio reproduction. Envision a home theater capable of immersing you into the true embodiment of the movie director’s dream.


  • Exceptional low end fidelity for the most intense musical or theatrical pieces created by Provlar™ woofers. Our improved version of Kevlar, introduced in 2010.

  • Vivid high end and unassuming midrange performance for greater accuracy and more life-like imaging, taming the shrillish properties of typical Titanium with Zelenium-Dome™tweeters. Our improved version of Titanium, also introduced in 2010.

  • Easy one-cut, drop-in installation puts built-in audio within reach, with Exact Fit templates and a precision flange that clamps the speaker securely to the drywall.

  • Get a lifetime of reliable sound from the durable, CAD (computer aided design) modeled, injection-molded butyl rubber surrounds suppress unwanted cone resonances.

  • Enjoy greater accuracy and more realistic imaging with aiming tweeters that pivot independently.

  • Timbre matching (the family of speakers sound the same) ensuring utterly seamless blending from speaker to speaker. They are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms with nearly transparent, ultra-small perfs

  • Practically invisible once installed with the magnetically attached exclusive wafer-thin Rarefied-Grille™

  • Visualize an even more hidden look by painting the grill and frame of the speakers for a nearly invisible installation.

"Finally, our flagship line of speakers are here! This HD line of trimless speakers are very good....and very good for the price. With this style of grill, the speakers take on an elegant feel, integrating nicely in even the highest-end homes. Factory direct from a strong retailer is your best bet these days...no middle-man"
Brian Kruse
InwallTech HD650.1C

These speakers are sold in pairs for the price listed.

-Woofer: 6 1/2" Provlar™ Woofers (new improved version of Kevlar) with butyl rubber surround, 1" voice coil, 22 oz. magnet with vented pole piece
-Tweeter: 1" Pure Zelenium™ Dome pivots 30 degrees, ferro-fluid cooled, neodymium magnet, wide dispersion design
-Crossover: Phonalic Heavy Duty Reinforced PCB board, independent 12 db woofer section, 12 db tweeter section, Polyimide auto protect over power reset automatic switch, Gold plated terminal posts will accept up to 14 AWG wire.
- 3 db attenuation switch for independent tweeter control
-Impedance: Switchable 4 or 8 ohm
-Sensitivity: 88 db measured with 1 watt / 1 meter away
-Maximum Thermal Power Rating: 125 Watts
-Overall Frequency response: 40 Hz- 30,000 Hz (+ - 9db)
-Low Frequency limit -3db: 50Hz
-Upper Frequency limit -3db: 25,000Hz
-Dimensions: 9 1/2"x 4 1/2"
-Cut out dimensions: 8" (It's advised to NOT cut your opening until you have the speakers in hand, a template is included with the speakers)

Industry Comparison:

InwallTech® HD650.1C B & W CCM 665
See on ABT.com
Index Score:
$379 pr.
Index Score:
$400 pr.
This comparison illustrates InwallTech's principles of making the most of materials available to get audiophile quality keeping pricing at affordable levels giving you the most purchasing power when shopping for inwall speakers.
Installation Tip for Starting Dog Ear Mounting

Promo Video describing the features of the HD650.1A Speakers

What's the difference between traditional and "trimless"?

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 27 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Superior Product and Services August 12, 2020
Reviewer: Steven Klein from La Mesa, CA United States  
This is my third purchase of speakers.  This one was for my new home that included 8 speakers to make an 11.1 system two of which were in/wall speakers. I purchased the top-of-the-line speakers which are stocked full of quality and efficiency.  The mounting of the speakers could not be easier.  The systems sounds tremendous and as I hoped/expected from Inwalltech.  Delivery was speedy and the speakers were professionally packaged to ensure no damage in transit.

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  0 of 0 people found the following review helpful:
5 of 5 Overall Terrific June 8, 2020
Reviewer: BERT RIVERA from CAMARILLO, CA United States  
I had plenty of information from which to make my decision on the level of speakers I was searching for. The order process was straightforward and shipping was fast. Everything arrived packaged correctly and on time. Quality is excellent, just what I ordered.

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  0 of 0 people found the following review helpful:
5 of 5 Surprisingly awesome sound April 15, 2020
Reviewer: Lewis Bell from Montrose, CO United States  
I know, I shouldn't judge quality by a price tag and now I can add this purchase to the reasons why.  I bought a full set of 5.1 speakers and 7.1 speakers for two separate systems, along with ceiling speakers for my whole house audio system.  I spent around $2,500 with inwalltech whereas I could have spent well over $5,000 for name-brand speakers.  I'm glad I didn't waste the money because these babies ROCK.  We are building a house, so I don't even have my amp yet, but I hooked all of the speakers to a spare amp to test them (to be sure that a contractor didn't skewer any of my in-wall speaker wiring) and even with a "spare" amp, these things sound AWESOME.

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  0 of 0 people found the following review helpful:
5 of 5 HD-650.1C April 3, 2020
Reviewer: Steve from Aumsville, OR United States  
I purchased the HD-650.1C and they arrived in a couple of days. They look very well built. The sound they produce is awesome. I mounted them in a community center and they produce clear crisp sound throughout this big room. Though they are small in size, I like them much better than the large PA speakers that we had been using.

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  0 of 0 people found the following review helpful:
5 of 5 Speakers May 28, 2019
Reviewer: Danny Coons from Kevil, KY United States  
Excellent couldn't be any easer.

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