Color: White RAL 9002, graphite black RAL 9011 (each with frame and aluminum perforated grille in silver RAL 9006), from 1976 also natural walnut with black frame and grille
Dimensions: 250 x 460 x 210 mm (WxHxD)
Weight: 10,5 kg
Factory price: 520 DM on sale, 308 DM / piece (1.9.73: net)
Type of construction: 3-way closed, shelf speaker
Chassis:
Woofer: 1x 205 mm
Midrange: 1x 50 mm Dome
Tweeter: 1x 25 mm dome
Load capacity (nominal/musical b.): 50 / 70 W (specified as 85 W from 1976)
Opera ting power according to DIN 45 500 (86 dB at 3 m distance): 0.8 – 2.5 Watts
Required amplifier power at room volume (80 dBA at 3 m distance): approx. 1.2 Watts
Suitability for amplifiers: 25 – 35 watts per channel.
Frequency response: 28 - 25,000Hz
Transition ranges: 500 / 5,000 Hz
Impedance: 4 Ohm s
Recommended listening distance: 2 – 6 m
Woofer: 1x 205 mm
Midrange: 1x 50 mm Dome
Tweeter: 1x 25 mm dome
The Heco Professional series is a studio series in various gradations
The PSL series has a rounded softline (studio line) design, is technically identical to the P series
Separate connection cables with DIN standard plugs, recessed socket on the back