Heco Superior 740
Data[edit]
General
- Manufacturer: Heco GmbH
- Model: Superior 740
- Years of manufacture: from 1989 - around 1990
- Manufactured in: D-6384 Schmitten/Ts.1 Federal Republic of Germany
- Colour: walnut veneer, oak veneer P 43, mahogany veneer P 36, ash black, ash white; special version sanding varnish black, sanding varnish white, others on request
- Dimensions: 850 x 220 x 255 mm (H x W x D)
- Weight: 16 kg
- Original price approx.: 2000,- DM / pair
Technical Data
- Type: 3-way closed, floorstanding speaker
- Chassis:
- woofer: 1x 170 mm (cone, TC 170)
Midrange driver: 1x 170 mm (cone, TMC 170) Tweeter: 1x 19 mm (dome, KHC 19 M)
- power handling (nominal/music): 120 / 160 Watt
efficiency: 88 dB/1W/1m, maximum sound pressure: 102 dB/1m
- frequency response: 28 - 35,000 Hz
- Transitional ranges: 150 / 3,000 Hz
- Impedance: 4 Ohm
Special Features
- ISS (Integrated Subwoofer System)
Remarks[edit]
Volume: x litres Other models in the same series:
Slight midrange dip, slightly weaker than the Superior 840.
These floorstanding speakers were tested in "Stereoplay" 7/89: Points 29-31, top class III. The Heco Superior 1040 (reference class) got 8/89, 33-35 points.
ISS operating principle[edit]
ISS is a subwoofer system developed by Heco. The bass systems work in completely separate acoustic chambers and are decoupled extremely steeply (18-24 dB/oct.) between 150-250 Hz via the crossover. The result: a precise, extremely deep bass. All Superior models (except Superior 620) can therefore be regarded as a "cum basso continuo system". The basis of the ISS technology is a low-midrange loudspeaker, the so-called bass driver. The fundamental range between 300 and approx. 3000 Hz, which is particularly critical for the auditory system, must be reproduced as true to phase as possible. If the fundamental range is not transmitted in a time-accurate and sound-neutral manner, the overall reproduction of instruments and voices cannot be faithfully reproduced and free of coloration. Therefore, this range is reproduced by only one phase-stable transducer. This low-midrange speaker is equipped with a low-resonance, high-fidelity polypropylene cone diaphragm mounted in a torsionally rigid die-cast light alloy chassis.
Pictures[edit]
- Picture:HecoSuperior740-1.jpg
- Picture:HecoSuperior740-2.jpg
Reports[edit]
Test in Stereoplay 7/1989: Top class III