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Old 10-10-2022, 04:02 AM
Join Date: Oct 2022
Location: Germany
Posts: 2
sda2 is on a distinguished road
X3 E83 DSP not applying settings like EQ

Hello guys, I know this is an X forum, but you seem to be the most knowledgable in regards of audio and nav setups.

I retrofitted the E83 X3 DSP (DSP2) into my E46 Touring (with Carver subwoofers from Z4) and I have the 16:9 navigation with MK4 and BM54 running late 2005 firmware.

Now I have the problem, that my DSP setting dont apply. Neither to FM/CD or Bluebus over coax digital audio.

I even tried the X3 radio module from late 2007 model as its compatible with the E46 connector and can replace the BM54 1:1, but no change.

Is there something that could lead to this behaviour? A friend said to me, that his factory DSP equipped X3 E83 also did this after he replaced the amplifier/DSP unit and suddenly it started working again.

Any help appreciated.
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Old 12-05-2022, 09:49 AM
Join Date: Oct 2022
Location: Germany
Posts: 2
sda2 is on a distinguished road
I want to post my solution for this.

I forgot that the DSP unit came from a Z4 with NO satnav at all, so it was coded to normal radio useage.

For the DSP EQ and hall setting to work correctly, you have to make sure that the coding is set to "CID" "AKTIV".
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