Category Archives: Amplifier

Volkswagen RNS 510 coding when installing with a factory amplifier

When retrofitting a RNS 510 into a vehicle with a factory amplifier coding is required to drop the “output stage power 26 dB” to “output stage line-out 12 dB”.  Poor sound quality and other problems will occur if this coding is not performed, the easiest way to see that the coding has not been performed correctly is that the fader option does not work for front/rear operation.

To make the chances you will need a dealer tool or Vagcom/VCDS. This guide covers the use of Vagcom/VCDS.

Open controller 37 – navigation and click on coding – 07

volkswagen_vcds_controller_37

Click Long Coding Helper

volkswagen_vcds_controller_37_long_coding_helper

Byte 1 select Bit 01 – Volkswagen Sound System.

This is the standard amplifier used in many Volkswagen cars, this changes the outputs from High to Low.

volkswagen_vcds_controller_37_long_coding_byte_1_sound_system

Byte 2 select Bit 00 – Sound System (active Speakers)

volkswagen_vcds_controller_37_long_coding_byte_2_sound_system

Byte 4 select Bit 01 – Speaker Monitoring Inactive (Sound System)

This turns off the speaker monitoring, the amplifier which is driving the speakers is performing this task and will report any problems with the speakers. If there is no amplifier the headunit does this checking.

volkswagen_vcds_controller_37_long_coding_byte_4_speaker_monitoring

Byte 5 select Bit 00 – Equalization: Linear

volkswagen_vcds_controller_37_long_coding_byte_5_equalization

Exit the long coding helper and save the changes. The RNS 510 doesn’t require a reboot and should start sounding better.

Another change that can be beneficial is changing the loudness, this can be performed by entering the test mode.

Accessing the Setup Menu on RNS 510 head units with firmware version 2660 / 2662 / 2664 / 2666 / 2668

Accessing the Setup Menu on RNS 510 head units with earlier firmware versions

Volkswagen factory amplifier details and pin assignments

Multi-pin connector A, 24-pin

1 –  Rear left treble loudspeaker, positive
2 –  Rear right bass loudspeaker, negative
3 –  Rear right bass loudspeaker, positive
4 –  Rear left bass loudspeaker, positive
5 –  Rear right treble loudspeaker, negative
6 –  Rear right treble loudspeaker, positive
7 –  Rear left treble loudspeaker, negative
8 –  Front left bass loudspeaker, negative
9 –  Front left bass loudspeaker, positive
10 –  Rear left bass loudspeaker, negative
11 –  Front right mid-range loudspeaker, negative
12 –  Front right mid-range loudspeaker, positive
13 –  Not assigned
14 –  Audio signal input, rear left, negative
15 –  Audio signal input, rear left, positive
16 –  Not assigned
17 –  Audio signal input, rear right, negative
18 –  Audio signal input, rear right, positive
19 –  Control in (optional)
20 –  Audio signal input, front left, negative
21 –  Audio signal input, front left, positive
22 –  Not assigned
23 –  Audio signal input, front right, negative
24 –  Audio signal input, front right, positive
Multi-pin connector B, 23-pin
1 –  CAN low
2 –  Front left mid-range loudspeaker, negative
3 –  Front left mid-range loudspeaker, positive
4 –  CAN high
5 –  Not assigned
6 –  Front left treble loudspeaker, negative
7 –  Not assigned
8 –  Not assigned
9 –  Front left treble loudspeaker, positive
10 –  Not assigned
11 –  Front right bass loudspeaker, positive
12 –  Front right bass loudspeaker, negative
13 –  Not assigned
14 –  Not assigned
15 –  Front right treble loudspeaker, positive
16 –  Voltage supply, negative
17 –  Not assigned
18 –  Front right treble loudspeaker, negative
19 –  Voltage supply, negative
20 –  Voltage supply, positive
21 –  Voltage supply, positive
22 –  Voltage supply, negative
23 –  Voltage supply, positiveF

amplifier_pin_assignments_N91-0336

The sound system amplifier extends the sound range of the radio unit or radio navigation system.

It is available as optional equipment for appropriate radio units and radio navigation systems.

The amplifier is an 8-channel system.

The signal inputs on the amplifier are activated by the loudspeaker outputs of the radio unit or radio navigation system.

The amplifier is installed under the left front seat.

Factory Amplifier Pin Assignments

Multi-pin connector A, 24-pin

1 –  Rear left treble loudspeaker, positive
2 –  Rear right bass loudspeaker, negative
3 –  Rear right bass loudspeaker, positive
4 –  Rear left bass loudspeaker, positive
5 –  Rear right treble loudspeaker, negative
6 –  Rear right treble loudspeaker, positive
7 –  Rear left treble loudspeaker, negative
8 –  Front left bass loudspeaker, negative
9 –  Front left bass loudspeaker, positive
10 –  Rear left bass loudspeaker, negative
11 –  Front right mid-range loudspeaker, negative
12 –  Front right mid-range loudspeaker, positive
13 –  Not assigned
14 –  Audio signal input, rear left, negative
15 –  Audio signal input, rear left, positive
16 –  Not assigned
17 –  Audio signal input, rear right, negative
18 –  Audio signal input, rear right, positive
19 –  Control in (optional)
20 –  Audio signal input, front left, negative
21 –  Audio signal input, front left, positive
22 –  Not assigned
23 –  Audio signal input, front right, negative
24 –  Audio signal input, front right, positive

Multi-pin connector B, 23-pin

1 –  CAN low
2 –  Front left mid-range loudspeaker, negative
3 –  Front left mid-range loudspeaker, positive
4 –  CAN high
5 –  Not assigned
6 –  Front left treble loudspeaker, negative
7 –  Not assigned
8 –  Not assigned
9 –  Front left treble loudspeaker, positive
10 –  Not assigned
11 –  Front right bass loudspeaker, positive
12 –  Front right bass loudspeaker, negative
13 –  Not assigned
14 –  Not assigned
15 –  Front right treble loudspeaker, positive
16 –  Voltage supply, negative
17 –  Not assigned
18 –  Front right treble loudspeaker, negative
19 –  Voltage supply, negative
20 –  Voltage supply, positive
21 –  Voltage supply, positive
22 –  Voltage supply, negative
23 –  Voltage supply, positive