|Cantonís Redesigned Ergo Series|
|Home Theater News Speaker Systems News|
|Written by AVRev.com|
|Friday, 28 October 2005|
Canton is shipping its newly redesigned Ergo loudspeakers with new drivers and crossover networks incorporating technological advancements developed for the recently introduced Vento line. The Ergo line includes a trio of three-way floorstanders, three compact two-way models, a 2-1/2 way center channel, and an improved 350 Watt powered subwoofer.
The full range models in the Ergo line employ the company's latest ADT-25 aluminum-manganese dome tweeter. The most significant change to the driver is a flared transmission front plate which delivers improved high frequency dispersion and off-axis linearity, and reportedly increases driver efficiency by 2- to 3- dB overall. The revised ADT-25 employs Canton's one-piece aluminum-manganese dome and voice coil former for high frequency performance and heat dissipation while the surround design has also been tweaked to reduce distortion and make it less susceptible to break-up modes. All these changes extend the tweeter's effective operating range up to 40 kHz while limiting distortion.
The bass and midrange drivers in the Ergo line feature stiff and lightweight black anodized aluminum cones for optimum response. The drivers were developed for the Vento series for a 60 to 100 percent increase in excursion capabilities, and a 6- to -9 dB increase in deep bass output.
The new line also incorporates the most dramatic change in cabinet design the line has seen in over two decades. The front baffle incorporates a curve across the face of the speaker that is actually supposed to reduce deleterious edge effects. Additionally, the floorstanding models have bottom plates that improve isolation from the floor. The increased structural support of both the baffle and the bottom plate also serves to further reduce cabinet resonance.
The three floorstanding models in the Ergo line use Canton's exclusive Displacement Control (DC) technology to prevent signals below the audible frequency range from interfering with the bass driver. In conventional speakers, these signals can generate high levels of unwanted harmonic distortion in the audible lower bass range, causing a muffled tonal quality. DC technology allows the speakers to provide clear, linear bass reproduction at much lower frequencies than could otherwise be attained.