CANTON ERGO 70
¥ 118,000 (1 unit, around 1991)
Commentary
The ERGO series speaker system has been improved while inheriting the existing CT series.
It has a 16 cm cone woofer in the low range and a 16 cm cone squaker in the middle range.
A newly developed graphite-reinforced polypropylene cone is used for the diaphragm of these units.
A 2.5 cm hard-domed tweeter is installed in the high range.
A manganese-aluminum diaphragm developed in the field of aerospace science is adopted for the diaphragm. Moreover, the diaphragm and bobbin are integrated to enhance the heat radiation effect and realize excellent transient characteristics as well as high input resistance.
The network section is designed with an emphasis on phase characteristics, and group delay characteristics, in which the phase of a specific frequency is delayed, are greatly improved. In addition, the use of durable high-quality parts reduces the deterioration of sound quality caused by the network.
The enclosure uses a bass reflex system.
The inside consists of the upper part of the closed 2-way system and the lower part of the bass reflex system. By placing the tweeter between the skoker and woofer, it has a clearer and natural feeling of spread.
The exterior features a felt-covered baffle plate and round corners to reduce unwanted sound radiation and enhance the interior.
A large screw-type terminal is used for the input terminal to accommodate very thick cables.
There are 2 variations of finishing, mahogany and walnut.
Model Rating
| Method | 3-way, 3-speaker, bass reflex system ・ Tall Boy Type |
| Units Used | For low band : 16 cm cone type For Medium Range : 16 cm cone type For high-pass : 2.5 cm dome type |
| Output sound pressure level | 86.7dB |
| Allowable input | 90W (rated) 130W maximum |
| Nominal impedance | 4 Ω |
| Crossover frequency | 300 Hz, 3.5 kHz |
| External dimensions | Width 215x Height 900x Depth 247 mm |
| Weight | 17kg |