Some time ago we published an article on BMW sound upgrades,  (see it here..) 

Products and vehicle models have moved on since then and the latest offering to improve dreadful factory audio on these cars comes in three stages. 

Stage One:

 

Stage 1 BMW Audio Upgrade - Rainbow 2-Way Front Speaker Audio Upgrade

This is our Stage 1 Upgrade kit for BMW E or F Series Vehicles

Rainbow intelligence-line IL-C4.2 BMW E/F-Series Front upgrade Car Speakers

Easy to fit, easy to tune easy to please the most demanding- made for your car only

  • 2-way 4 inch (10 cm) Compo Set
    BMW Stage One Sound Upgrade
    Click Image for more Info
  • 25 mm Silk dome Tweeter
  • Max. 80 Watts
  • Minimum Amplifier Power: 30 Watts
  • Frequency Responce: 65 Hz – 30 kHz

Included in this upgrade kit:

  • Vehicle Specific 2-Way Component Speaker Kit (IL-C4.2) with Inline crossovers
  • 2 Sheets of Skinz Sound Deadening Material

Extra Parts Required:

  • If your BMW doesn't currently have tweeters fitted and doesn't have the grilles/housings, you will need to source these from your local BMW parts department.

 

Stage Two:

 

Stage 2 BMW Audio Upgrade - Rainbow 3-Way Front Speaker Audio Upgrade

This is our Stage 2 Upgrade kit for BMW E or F Series Vehicles, Replacing the under seat subwoofers, door speaker and adding tweeters and an Amplifier

Rainbow intelligence-line IL-C8.3 BMW E/F-Series Front upgrade Car Speakers

OEM fit, easy to tune easy to please the most demanding- made for your car only

  • 3-way Component Set
    BMW Stage Two Sound Upgrade
    Click Image for more Info
  • 8 inch (20 cm) Under Seat Subwoofers with OEM Style Mountings
  • 4 inch (10cm) Door Midrange Speaker with OEM Style Mountings
  • 25 mm Silk dome Tweeter with OEM Style Mountings
  • Max. 150 Watts
  • Minimum Amplifier Power: 75 Watts
  • Frequency Response: 35 Hz – 30 kHz

Hertz HCP4 4 Channel Speaker Amplifier (https://www.raysmith.co.uk/HCP4)

  • 4 x 55w RMS @ 4 Ohms
  • Speaker Level Input with Auto Turn On

Included in this upgrade kit:

  • Vehicle Specific 3-Way Component Speaker Kit (IL-C8.3) with Inline crossovers for Mid+Tweeter
  • Hertz HCP4 Power Amplifier with Speaker Level Inputs and Auto Remote On
  • Audison Connection FPK350 Amplifier Wiring Kit
  • 10m of Audion Connection B218 Speaker Cable
  • 4 Sheets of Skinz Sound Deadening Material

Extra Parts Required:

  • If your BMW doesn't currently have tweeters fitted and doesn't have the grilles/housings, you will need to source these from your local BMW parts department.

 

Stage Three:

 

Stage 3 BMW Audio Upgrade - Rainbow 3-Way Front Speaker Audio Upgrade with Processor

This is our Stage 3 Upgrade kit for BMW E or F Series Vehicles, Replacing the under seat subwoofers, door speaker and adding tweeters and an Amplifier
Stage 3 also includes a BitTen to allow us to de-equalise the factory output and provide the amplifier with a clean signal.

Rainbow intelligence-line IL-C8.3 BMW E/F-Series Front upgrade Car Speakers

OEM fit, easy to tune easy to please the most demanding- made for your car only

  • 3-way Component Set
    BMW Stage Three Sound Upgrade
    Click Image for more Info
  • 8 inch (20 cm) Under Seat Subwoofers with OEM Style Mountings
  • 4 inch (10cm) Door Midrange Speaker with OEM Style Mountings
  • 25 mm Silk dome Tweeter with OEM Style Mountings
  • Max. 150 Watts
  • Minimum Amplifier Power: 75 Watts
  • Frequency Responce: 35 Hz – 30 kHz

Audison BitTen (https://www.raysmith.co.uk/audison-bitten)

  • 32 bit DSP
  • Automatic De equalisation
  • 31 Band Graphic Equaliser
  • Time alignment
  • 2 preset memory (with DRC)
  • Adjustable Crossover
  • Optical Input (bit TenD)
  • Digital Output (bit TenD)
  • Dash Remote Control (optional on bit Ten)
  • High-Level input with signal summing
  • Aux Input
  • 5 Channel RCA output
  • 5 Turn On options
  • In/Out level adjustment

Hertz HCP4 4 Channel Speaker Amplifier (https://www.raysmith.co.uk/HCP4)

  • 4 x 55w RMS @ 4 Ohms
  • Speaker Level Input with Auto Turn On

Included in this upgrade kit:

  • Vehicle Specific 3-Way Component Speaker Kit (IL-C8.3) with Inline crossovers for Mid+Tweeter
  • Hertz HCP4 Power Amplifier with Speaker Level Inputs and Auto Remote On
  • Audison Connection FPK350 Amplifier Wiring Kit
  • 10m of Audion Connection B218 Speaker Cable
  • 4 Sheets of Skinz Sound Deadening Material
  • Audison BitTen

Extra Parts Required:

  • If your BMW doesn't currently have tweeters fitted and doesn't have the grilles/housings, you will need to source these from your local BMW parts department.

Optional Extras:

Compatible Vehicles:

F Series Variation:

  • F12 (Front Compatible)
  • F13 (Front Compatible)
  • F15 (Front Compatible)
  • F16 (Front Compatible)
  • F20 (Front Compatible)
  • F21 (Front Compatible)
  • F21 (Front Compatible)
  • F22 (Front Compatible)
  • F23 (Front Compatible)
  • F25 (Front Compatible)
  • F26 (Front Compatible)
  • F30 (Front Compatible)
  • F31 (Front Compatible)
  • F32 (Front Compatible)
  • F33 (Front Compatible)
  • F34 (Front Compatible)
  • F36 (Front Compatible)

E Series Varation:

  • E81 (Front Compatible)
  • E82 (Front Compatible)
  • E83 (Front Compatible)
  • E84 (Front Compatible)
  • E87 (Front Compatible)
  • E88 (Front Compatible)
  • E90 (Front Compatible)
  • E91 (Front Compatible)
  • E92 (Front Compatible)
  • E93 (Front Compatible)
  • F06 (Front Compatible)
  • F07 (Front Compatible)
  • F10 (Front Compatible)
  • F11 (Front Compatible)

Mix Varation:

  • E60 (Front Compatible)
  • E61 (Front Compatible)
  • E65 (Front Compatible)
  • E66 (Front Compatible)
  • E70 (Front Compatible)
  • E71 (Front Compatible)
  • E89 (Front Compatible)
  • F01 (Front Compatible)
  • F02 (Front Compatible)
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