Poor audio

[Asamoli]

I've recently swapped my rcd 310 headunit to an RCD 310 with dab function and now Everything sounds awful. The radio FM and dab the cd and the aux are all no where neer as loud as they were and the general quality is just bad the bass is no existing even on full I've messed with the eq and i still cant seem to solve it does anyone have any idea what it could be?

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[Asamoli]

The new unit came from a golf if that's any help at all

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[Asamoli]

Anyone ? Before i rip it out and put the old one back

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[iichel]

by any chance a golf with dynaudio or any other VW sound system?

[Asamoli]

I'm not sure tbh would that make a difference?

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[iichel]

yes that does make a big difference. normally, the speakers are directly powered by the speaker output of your RNS.

in case of a VW soundsystem (fender, dynaudio), the speaker outputs are transformed to 'line out' connections by a coding change.
this dims the sound, flattens it too. it feels like listening to it with your fingers in your ears.

it's easily solved with a VCDS system. you have to recode the settings, set byte 1 of your RNS coding to '00 no sound system'.

[Asamoli]

It's an RCD not rns would that make a difference and it came from a golf r so i would assume with it being a r it had updated speaker. Mine an sel polo so i think it just has 6 standard speaker?

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[iichel]

yes there is a good chance that it came from a golf with a sound system.
the polo never has a soundsystem, unless retrofitted (for example, i have a dynaudio myself).
the VW Helix plug and play soundsystem doesn't require a coding change.

[Asamoli]

So to make it work as my old one did it needs re-codeing

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[iichel]

Yep, cannot guarantee that this is the issue, but this is my best educated guess.

[Asamoli]

After having a better look the dab radio didn't seem too bad as reguards bass or volume but the aux input is dreadful

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