from translated German webpage:
Country: Germany
Manufacturer / Brand: Brown; Frankfurt
Year: 1980/1981 Type: Loudspeaker (speaker or headphone)
Wave bands - Without
Details
Power type and voltage No power needed
Loudspeaker 3 Loudspeakers
Power out
from Radiomuseum.org Model: Closed Box L8070HE - Brown; Frankfurt
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 260 x 430 x 190 inches / 6604 x 10922 x 4826 mm
Notes
The Series L 8060/8070/8080/8100 HE is intended for wall - or Regal lineup, the abbreviation HE is H igh E fficiency. The dome midrange and tweeter are both mounted on a die-cast integral plate (210 x 120 mm).
Type: 3-way, closed
Nominal / musical output: 70/120 W
Frequency range: 28 ... 30,000 Hz
Sensitivity (1W / 1m): 90 dB
Nominal Impedance: 8 Ω
Crossover: 12 dB / octave,
Crossover frequencies: 500/3000 Hz
Woofer: Ø 210 mm | Type: dyn. Cone
Midrange: Ø 50 mm | dyn. Dome
Tweeter: Ø 19 mm | dyn. Dome
Case: Wood
Mounted removable perforated sheet steel, steamed: Front
Housing volume (net / gross): 14/21 l
Housing Color: black,
Net weight (2.2 lb = 1 kg) 11 kg / 24 lb 3.7 oz (24,229 lb)
Price in first year of sale DM 1,000.00
Mentioned in - - Manufacturers Literature