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.
Showing 1–12 of 36 resultsSorted by price: high to low
Energy Connoisseur C-8 Tower Speakers, High Gloss Black, Canada
The flagship of Energy’s Connoisseur range, built in Toronto by a company whose voicing grew out of the National Research Council’s listening work in Ottawa. Two 8-inch aluminium-polypropylene woofers and a cloth-suspended aluminium dome, crossed at 1,800 Hz and reaching 28 Hz — genuinely full-range, so most rooms will not want a subwoofer under them. At 93 dB it runs happily on 30 watts. High-gloss black, made in Canada, 57 lb each. Very Good condition. Pair — pickup in Kanata, or we deliver.
Energy Connoisseur CF-50 2.5-Way Tower Speakers
Enjoy big, efficient Energy sound with the Connoisseur CF-50 — a slim Made-in-Canada floorstander that brings real punch, easy driveability, and a lot more scale than its footprint suggests.
- ✔️ Fully tested pair in very good condition
- ✔️ 2.5-way, four-driver design with standout 96 dB sensitivity
- ✔️ Dual 5-way binding posts for clean single-wire, bi-wire, or bi-amp setups
- ✔️ Packed seriously for the journey in 275 lb-test double-wall packaging
- ✔️ Backed by Radique Audio's Bumper-to-Bumper Warranty and Perpetual Trade-Back Program
🎶 High-sensitivity Canadian towers with real swagger — lively, room-filling, and the sort of speaker that makes modest amps feel stronger than they have any right to.
Energy Connoisseur CF-30 2.5-Way Tower Speakers
Enjoy big, room-filling Energy sound with the Connoisseur CF-30 — a slim Made-in-Canada floorstander that stays easy to place, easy to drive, and easy to love.
- ✔️ Fully tested pair in very good condition
- ✔️ 2.5-way design with dual 5.5-inch woofers and a 1-inch aluminum dome tweeter
- ✔️ Dual 5-way binding posts for clean single-wire or bi-wire setups
- ✔️ Packed seriously for the journey in 275 lb-test double-wall packaging
- ✔️ Backed by Radique Audio's Bumper-to-Bumper Warranty and Perpetual Trade-Back Program
🎶 Slim towers, surprisingly full bass, and the kind of easygoing Canadian voicing that just slides into a system and gets on with making music.
Energy Connoisseur C-2 Speakers – Made in Canada, Gloss Black
The standmount at the top of Energy's acclaimed 1990s Connoisseur line, in high gloss black, presenting very well and sounding great for their size.
✔️ Good condition, at the upper end of the grade — the high gloss black presents very well as a pair
✔️ Bi-wire ready — four gold binding posts on each speaker, jumpers in place
✔️ Made in Canada — the standmount at the top of Energy's acclaimed Connoisseur line
✔️ Covered by Radique Warranty
✔️ Includes Perpetual Trade-Back Program eligibility
✔️ Expertly packed for safe shipping
Highly Efficient Energy Center Channel Speaker AC-300
Two 5.5-inch carbon/mica polypropylene woofers either side of a 1-inch aluminum dome, all magnetically shielded — 93 dB sensitive, rated to 175 watts at 6 ohms, 40 Hz to 22 kHz. High gloss piano black with the full wrap-around sock still in good shape, dual 5-way binding posts for bi-wiring, 19.3 inches wide and 22 lbs. Cosmetics 8.5 out of 10.
Energy C-200B 2-Way Bookshelf Speakers, Pair, Made in Canada
Seven layers of high-gloss piano lacquer, applied by hand — the reason these cost what they did new. A 6.5-inch Composite Fiberglas woofer and a chambered 1-inch aluminium-dome tweeter with a phase plug behind a metal grille, crossed at 2.6 kHz. 48 Hz to 20 kHz, 88 dB anechoic, 125 watts RMS. Made in Canada; condition very good.
Energy e:XL-S8 8″ Front-Firing Subwoofer 400W Peak! – Canada
An 8-inch driver on a discrete MOSFET amplifier rated 100 watts RMS and 400 peak, in a vented cabinet that reaches 29 Hz. The rear panel gives you continuously variable phase, a low-frequency EQ of plus or minus 3 dB, an adjustable low-pass, and both high- and low-level inputs. Black ash, 25.9 lbs, made in Canada. Very good cosmetic condition.
Energy C-50 Bookshelf Speakers, Pair – Ultra-Compact, Black Ash
A pair of ultra-compact Energy C-50 bookshelf speakers, designed and engineered in Canada, in black ash with gloss black front baffles and their black cloth grilles. They have been tested on our bench and are in very good condition.
✔️ Very good condition — black ash with gloss baffles, grilles included
✔️ 1-inch aluminum tweeter and 4½-inch woofer, video-shielded
✔️ Five-way binding posts — designed and engineered in Canada
✔️ Covered by Radique Warranty
✔️ Includes Perpetual Trade-Back Program eligibility
✔️ Expertly packed for safe shipping
Attractive, Compact Energy Center Speaker C-C50
Two 4.5-inch cone drivers either side of a 1-inch dome, in a cabinet 14 inches wide and 5.7 tall — the C-Series centre that fits under a television without pushing it forward. 60 Hz to 20 kHz, 86 dB, 8 ohms, 100 watts. Eleven pounds. Built in Canada and voiced to blend with the rest of the C-Series.
Front Ported Canadian Made Center Speaker from Energy EC-100
Two 4.5-inch polypropylene mid/woofers and a three-quarter-inch tweeter, front-ported so it can sit back inside a cabinet without choking. Sensitivity is 92 dB into 8 ohms, response 60 Hz to 20 kHz, and it takes 15 to 100 watts. Magnetically shielded, on 5-way binding posts that accept banana plugs. Made in Canada, about 13 lbs.