Energy C-500 slim tower speakers — front view with grilles off

Energy C-500 towers — angled view of the pair

Energy C-500 towers — rear view showing the ports and binding posts

Gorgeous Energy Slim-Tower Speakers C-500B

Name: Gorgeous Energy Slim-Tower Speakers C-500B
Brand: Energy
SKU: 7766
Price: 495.00 CAD
Availability: InStock

$495.00

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Categories: Used/Vintage, Speakers, Towers / Floor-Standers Tag: Energy

Description

Full-throttle sound. The C-500 pushes power and performance to all new heights. The C-Series C-500 is capable of great extension, slam and impact, with virtually no distortion for huge, clean audio.

Product highlights

* High performance tower speakers deliver powerful sound for movies, games and music * High-grade black ash finish * Deep bass from two 6.5-inch fiberglass woofers * Clear, accurate highs from aluminum dome tweeter help you hear details you’ve never before noticed

The lowdown The C-500—Its highly accurate sound and massive power draw you in even as it’s blowing you away. It’s an amazingly versatile platform for home theater or a world-class stereo system.

Pure Energy is the name of this game, from the sparkling 1-inch dome tweeter to fury of the two 6.5-inch composite fiberglass woofers. Looking for performance, looks and functionality? The C-500 has them all.

Specifications

System Type: Bass Reflex, Rear Vented

Frequency Response: 35Hz-20kHz +/- 3 dB

Recommended Amplifier Power up to 150 watts

Components: Chambered 1″ Aluminum Dome, Dual 6-1/2″ Composite Fiberglass cones

Impedance 8 ohms nominal; Minimum Impedance: 4 ohms, Sensitivity (anechoic)91dB, Sensitivity (2 speakers in a typical room)94dB

Crossover Point 1.2kHz and 2.5kHz

Overall Dimensions: W – 8″/20cm, H – 37.5″/95cm, D – 14.5″/37cm, Weight44.1lbs / 20kg ea

Asking just $495 for these great sounding Energy Floor-Standers

⭐ Don’t Just Take Our Word For It

Radique Audio holds over 600 customer ratings averaging 4.97 stars across six public platforms — Facebook Marketplace, Kijiji, Canuck Audio Mart, Google and others. Every rating lives somewhere we don’t control, so you can read the originals yourself, including the less flattering ones. See what our customers say. 👉

$495.00

Additional information

Weight	91.2 lbs
Dimensions	22 × 41.5 × 18.5 in

About brand

Energy at Radique

We service Energy, too. Bring us your own Energy speakers and subwoofers for repair, servicing or restoration (speakers up to 80 lbs each), with a 90-day warranty on the work. See our Audio Service page

Energy is a Canadian speaker brand from Audio Products International (API) of Scarborough, Ontario, the same company and factory behind Mirage. API was founded in 1973, and the Energy brand dates from the late 1970s or early 1980s. We carry Energy bookshelf speakers, towers, centre channels and subwoofers. We've had more than 170 Energy listings so far, covering more than 75 different models. Every used Energy here is inspected, tested and serviced as required, then photographed in-house and covered by our Bumper-to-Bumper Warranty and Perpetual Trade-Back Program. Don't see the model you want? Tell us on First Dibs and we'll email you when one arrives.

Our five best-selling Energy models so far: the RC-mini bookshelf speakers, the e:XL-S8 and ESW-8 subwoofers, the e:XL-C centre and the C-300 towers.

The Energy story

Howard Heiber founded Audio Products International in 1973 in Scarborough, Ontario, as a builder of private-label speakers. Energy says its brand dates from 1973; other sources point to the late 1970s or early 1980s, when API took on the Energy and Sound Dynamics names.

Research in Canada. Energy took part in the National Research Council of Canada's listening-test research from 1977 to 1986, and its speakers were built at API's Scarborough factory, which it shared with Mirage.

Veritas and Connoisseur. The Veritas v2.8 flagship was shown at the 1993 Winter CES, and the Connoisseur series followed in the mid-1990s. The Take 5 satellite system arrived in 1997.

New owners. Klipsch Group of Indianapolis bought API, with Energy, Mirage and Athena, in August 2006, and production moved to China around 2006 to 2007. VOXX bought Klipsch in 2011, and Gentex bought VOXX in 2025.

Which Energy is which?

Veritas (1993 onward): the flagship line, such as the three-way v2.8.

Connoisseur (mid-1990s to mid-2000s): models such as the C-2, C-3, C-6 and C-8.

Reference Connoisseur (RC): including the RC-70 towers and the RC-mini, one of our best sellers.

Take 5 and Take Classic (1997 onward): small satellite-and-subwoofer systems.

XL and e:XL (2000s): the entry line. Our best-selling e:XL-S8 subwoofer and e:XL-C centre come from here.

C-series (late 2000s): the vinyl-finished budget line, from the C-50 to the C-500, including the C-300 towers.

Subwoofers: the ESW and S-series, such as the ESW-8 we sell often.

Buying used Energy: what to check

Aluminum-dome tweeters. Owners report broken tweeters on some Connoisseur models. Look closely for dented or cracked domes.

Powered subwoofers. Owners report failed plate amplifiers on some S-series subs. Any sub should play cleanly at volume.

Surrounds. Most Energy woofers of the 1990s and 2000s use rubber surrounds, but some models, such as the RVSS dipole, used foam. Press gently on each woofer surround.

Where it was made. Energy speakers were made in Scarborough into the mid-2000s and in China from about 2006 to 2007. Check the rear label if Canadian manufacture matters to you.

Everything we list is inspected, tested and serviced as required here, and comes with our warranty.