Successive versions appeared in subsequent years until the Typ As were replaced, by the Brennabor Juwel 6, for 1930.
The Typ AL was powered by a 6-cylinder side-valve engine of 2.55 Litres, mounted ahead of the driver and delivering 45 hp at 3,300 rpm.
The car sat on a U-profile pressed steel chassis with rigid axles and semi-elliptical leaf springing.
These shared the dimensions and many mechanical elements with, respectively, the Typ AL and Typ AK but they featured a bored out version of the company's six-cylinder engine which in this form had a capacity of 3,080 cc, giving rise to an increase in claimed power output from 45 to 55 hp and a corresponding increase of 5 km/h (3 mph) in the maximum speed.
These cars differed little from their predecessors in terms of dimensions and mechanical components, with the notable exception of the gear box which now had only three ratios.