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                             Plug & Play Component Kit is suitable for BMW best selling 

models: 1 Series, 3 Series, 5 Series and so on. The speaker and tweeter fit 

into the factory location and use the factory connectors, you will enjoy 

the strongly improved sound quality with the help of the B2 audio sound 

upgrade system.

Highlights

1 pair of 25mm Silk dome tweeters with oval mount  

1 pair of 4” Mid-range speakers

1 pair of highpass crossover network (For mid-range speaker) 

1 pair of highpass inline crossover (For tweeter) 

User Manual

Packing List

Direct fit audio system for BMW without modification.

Using factory harness and connectors to allow plug & play.

Quick and easy to installation.

Mid-range speaker was designed in a cast aluminium construction

for ultimate durability and performance.

Biological fiber cone for authentic and brilliant sound reproduction.

Integrated phase plug for better dispersion.

Butyl rubber edge.

25mm silk dome tweeter.

1

101.24mm

55.00mm

44.50mm

43.00mm

24.00mm

13.00mm

49.60mm

75.20mm

39.00mm

119.44mm

55.00mm

110.45mm

130.86mm

91.50mm

25.60mm

114.27mm

81.71mm

98.63mm

1-Inch tweeter

crossover network 

4-Inch mid-range speakers
 (BM402C)

4-Inch mid-range speakers 
(BU402C)

10

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