Energy RC-6Cst

In-ceiling stereo input/bipole surround speaker

  • Energy RC-6Cst

    Front, grille included but not shown

  • Energy RC-6Cst


  • Energy RC-6Cst

    Bipole/Dipole switch

  • Energy RC-6Cst


Item #: 732RC6CST

Review Summary

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Our take on the Energy RC-6Cst

by Marshall Chase

Fill your space with sound not clutter with the Energy RC-6Cst. This versatile speaker plays the left and right channels of a stereo signal simultaneously — perfect for hallways and other tight spaces where it's awkward to install a pair. But you can also wire its pivoting tweeters in a mono configuration to make it an outstanding bipole surround speaker for your home theater system. Either way you choose, you can expect fantastic performance and clarity with room filling sound. The included paintable grille lets you match this speaker to your room color for a seamless installation.

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Free installation help 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:

Click the links above to view these guides; you'll need the Adobe Acrobat PDF reader (free download).


  • two 3/4" pivoting dome tweeters
  • 6-1/2" Kevlar woofer
  • can be wired for stereo or mono bipole operation
  • handles up to 125 watts
  • frequency response 44-22,000 Hz (±3dB)
  • sensitivity 87 dB
  • 8-ohm impedance
  • paintable grille
  • cutout dimensions: 8-1/8" diameter
  • mounting depth: 5"
  • 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 In-ceiling
    Video Shielded No
    Tweeter Dome
    Midrange Size ---
    Woofer Size 6.5
    Woofer Composition Kevlar
    Woofer Surround Rubber
    Power Range (Watts) 30-125
    Sensitivity 87 dB
    Impedance (Ohms) 8
    Frequency Response 44-22kHz
    Connector Type Spring posts
    Bi-Amp Inputs Stereo input
    Parts Warranty 5 Years
    Labor Warranty 5 Years
    Product Research
    What's in the box?

    Download owner's manual

    • One stereo input in-ceiling speaker
    • White bezel/mounting kit
    • White grille
    • 2 Terminal jumper wires
    • Template/Paint mask
    • Instruction manual

    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.

    Driver Technology
    Mounting Options

    Driver Technology

    Stereo Input: The Energy RC-6Cst stereo input in-ceiling speaker can be used in locations where mounting multiple speakers is not practical. The dual spring post terminals accept signals from both left and right channels; the dual voice coil woofer sums the low frequencies from the stereo input to mono and the coaxially mounted dual-tweeter array reproduces the left and right channels independently.

    Bipole/Dipole Design: In addition to stereo inputs, the RC-6Cst can be wired as a single channel bipole or dipole speaker. When in dipole or bipole mode, typically used for rear channels in a home theater application, only one pair of speaker wires is used and the two input terminals are shorted together with the included jumper wires. A switch on the RC-6C's frame, behind the grille, specifies the phasing (bipole vs. dipole internal wiring).


    • Stereo: 87 dB
    • Mono: 92 dB

    Drivers: The RC-6Cst is equipped with the following drivers:

    • Tweeter: two 3/4" aluminum dome tweeters, independently mounted on a swiveling bridge; they can be angled separately +/- approximately 25°
    • Woofer: 6-1/2" Kevlar cone woofer; uses a ribbed elliptical surround

    Surround: The woofer uses a patented Ribbed Elliptical Surround; by changing the shape of the speaker surround to an ellipse, rather than the traditional half roll, distortion is reduced and the maximum excursion is increased.

    Break-In Period: Energy recommends that you play the RC-6Cst for a 100 hour break-in period before playing at high volume and making final sound adjustments. This is easily done by putting your compact disc player on repeat mode while playing a CD with a wide dynamic range ant normal listening levels.


    Speaker Terminals: The speaker has two pair of spring posts that can accept, pin connectors, single or dual banana plugs, or bare wire up to 12-gauge wire.

    Mounting Options

    Paintable: Both the plastic frame and aluminum grille can be painted to match the ceiling; a cardboard paint mask is included.

    Installation: The speaker can be installed in new or existing construction; it requires a cutout diameter of 8 inches and is held in place with four integral plastic mounting ears. The required depth to install the speaker is 5" from the mounting surface (this includes the thickness of the drywall). Behind the opening there must be a 7/8" clearance around the speaker to accommodate the ears. Speakers should be installed in drywall at least 3/8" thick. A cardboard template is included to assist you in making the cutout.


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    Energy RC-6Cst Reviews

    Average Customer Review:

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    5 out of 5

    Quality product

    Written By SteveG, Cedar Rapids, IA on Thursday, November 29, 2012
    Crutchfield Customer Review (What's this?)
    It's a real pleasure to work with a quality product. This ceiling speaker was more expensive than some, but seems to be well worth the money. It is very well engineered for a quick installation into either a new or existing ceiling. My wife was not sure about me cutting into our existing ceiling, but the finished look and ease of installation took care of any worries.
    Was this review helpful?    Yes | No
    5 out of 5

    Energy RC-6Cst

    Written By Anonymous, Hutchinson, KS on Thursday, October 04, 2012
    Crutchfield Customer Review (What's this?)
    Easy to install and great sounding!!
    Was this review helpful?    Yes | No
    5 out of 5

    Very good speakers

    Written By Richard R, Lacayette ,La on Monday, March 19, 2012
    Crutchfield Customer Review (What's this?)
    Very easy to install, great instructions, and I'm blown away at how well they how loud they will play. Bipole mode is pretty good for an in-ceiling speaker.
    Easy to install , clean look, bipole/ dipole performance
    Getting in the attic
    Was this review helpful?    Yes | No

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    For a more in-depth review and enhanced detailed information on the Energy RC-6Cst, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_732RC6CST/Energy-RC-6Cst.html ).