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Audio! Help!
I jump started my 01 x5 4.4i and all of a sudden my speakers have a loud noise like if it was on an unknown radio channel, I have a Lear amp hifi dsp! Did I blow the amp? Or speakers? Only the front tweeters work. There is no water damage in trunk at all, and there is no other problem with the vehicle the jump start ONLY affected the speakers so I'm not sure if it's the amp or the speakers.
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something definitely fried inside the amp... the amp is designed so it takes basically two input channels (left and right) and transfers them into 12 outputs... you would need to narrow down to specific speaker(s) that stopped working... the troubleshooting might be rather extensive - you would need to tear apart the left side pocket area in the trunk, to gain access to the amp... and then use the amp pinout to troubleshoot each channel - use your third party speaker to connect to the amp and see if the sound is distorted, and then use a sound signal to send down the wires to the car's speakers to see if the speakers can reproduce the sound...
based on your description that the multiple speakers are malfunctioning, i would suspect that the problem at common point, which is the amp... what is the exact date of manufacture of your car? |
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And it's all the speakers including subwoofers EXCEPT dash tweeters. I tore the trunk apart already anyways and I have the amp in hand wasn't that hard to remove with proper tools! But I don't have a third party speaker or any of that. So it's probably the amp? Should I just pay to get it repaired? |
i hate throwing parts or money at a problem... do you know how to read WDS diagrams? based on your date, this pinout seems to be the one for your situation
WDS BMW Wiring Diagram System - X5 E53 A18 Amplifier Plug connector overview Number X-pin, colour Description X18771 15-pin, black Plug connector A Amplifier (Top Hifi) X18772 18-pin, black Plug connector B Amplifier (Top Hifi) X18773 26-pin, blue Plug connector C Amplifier (Top Hifi) X01183 1-pin, metal Plug connector D Amplifier (Top Hifi) Pin assignments at plug connector X18771 Pin Type Description / Signal type Connection / Measuring notes 1 A Positive signal, subwoofer speaker 1 Subwoofer speaker 2 A Positive signal, subwoofer speaker 2 Subwoofer speaker 3 A Positive activation, rear left loudspeaker Left rear speaker 4 A Radio ON/antenna signal Radio 5 E Negative activation, rear right loudspeaker Right rear speaker 6 E Negative signal, subwoofer speaker 4 Subwoofer speaker 7 E Negative signal, subwoofer speaker 3 Subwoofer speaker 8 E Terminal 30 Fuse F72 9 E Negative signal, subwoofer speaker 1 Subwoofer speaker 10 E Negative signal, subwoofer speaker 2 Subwoofer speaker 11 A Touring Left rear speaker 12 A Touring Right rear speaker 13 E Positive signal, subwoofer speaker 4 Subwoofer speaker 14 E Positive signal, subwoofer speaker 3 Subwoofer speaker 15 M Terminal 31 Ground point Pin assignments at plug connector X18772 Pin Type Description / Signal type Connection / Measuring notes 1 Not used 2 E Negative signal, low frequency Transceiver/charging electronics 3 Not used 4 Not used 5 E/A I-bus signal line Connector X18344 6 Not used 7 Not used 8 E Negative activation, front right loudspeaker Radio 9 E Negative activation, front left loudspeaker Radio 10 Not used 11 A Positive signal, low frequency Transceiver/charging electronics 12 Not used 13 E Telephone mute signal Transceiver/charging electronics 14 Not used 15 E Telephone ON signal Transceiver/charging electronics 16 Not used 17 E Positive activation, front right loudspeaker Radio 18 E Positive activation, front left loudspeaker Radio Pin assignments at plug connector X18773 Pin Type Description / Signal type Connection / Measuring notes 1 A Positive activation, front left woofer Left front speaker 2 M Negative activation, front left woofer Left front speaker 3 Not used 4 M Negative activation, front right medium-range speaker Right front speaker 5 A Positive activation, front left mid-range speaker Left front speaker 6 Not used 7 Not used 8 Not used 9 A Positive activation, front right medium-range speaker Right front speaker 10 M Negative activation, front left mid-range speaker Left front speaker 11 A Positive activation, rear right medium-range speaker/tweeter Right rear speaker 12 A Positive activation, front right tweeter Right front speaker 13 A Positive activation, front right woofer Right front speaker 14 A Positive activation, front left tweeter Left front speaker 15 M Negative activation, front left tweeter Left front speaker 16 M Negative activation, rear left medium-range speaker/tweeter Left rear speaker 17 Not used 18 Not used 19 A Positive activation, rear left medium-range speaker/tweeter Left rear speaker 20 Not used 21 Not used 22 Not used 23 Not used 24 M Negative activation, rear right medium-range speaker/tweeter Right rear speaker 25 M Negative activation, front right tweeter Right front speaker 26 M Negative activation, front right woofer Right front speaker Pin assignments at plug connector X01183 Pin Type Description / Signal type Connection / Measuring notes 1 E Central locking signal Audio frequency CD changer |
i hate throwing parts or money at a problem... do you know how to read WDS diagrams? based on your date, this pinout seems to be the one for your situation
WDS BMW Wiring Diagram System - X5 E53 A18 Amplifier Plug connector overview Number X-pin, colour Description X18771 15-pin, black Plug connector A Amplifier (Top Hifi) X18772 18-pin, black Plug connector B Amplifier (Top Hifi) X18773 26-pin, blue Plug connector C Amplifier (Top Hifi) X01183 1-pin, metal Plug connector D Amplifier (Top Hifi) Pin assignments at plug connector X18771 Pin Type Description / Signal type Connection / Measuring notes 1 A Positive signal, subwoofer speaker 1 Subwoofer speaker 2 A Positive signal, subwoofer speaker 2 Subwoofer speaker 3 A Positive activation, rear left loudspeaker Left rear speaker 4 A Radio ON/antenna signal Radio 5 E Negative activation, rear right loudspeaker Right rear speaker 6 E Negative signal, subwoofer speaker 4 Subwoofer speaker 7 E Negative signal, subwoofer speaker 3 Subwoofer speaker 8 E Terminal 30 Fuse F72 9 E Negative signal, subwoofer speaker 1 Subwoofer speaker 10 E Negative signal, subwoofer speaker 2 Subwoofer speaker 11 A Touring Left rear speaker 12 A Touring Right rear speaker 13 E Positive signal, subwoofer speaker 4 Subwoofer speaker 14 E Positive signal, subwoofer speaker 3 Subwoofer speaker 15 M Terminal 31 Ground point Pin assignments at plug connector X18772 Pin Type Description / Signal type Connection / Measuring notes 1 Not used 2 E Negative signal, low frequency Transceiver/charging electronics 3 Not used 4 Not used 5 E/A I-bus signal line Connector X18344 6 Not used 7 Not used 8 E Negative activation, front right loudspeaker Radio 9 E Negative activation, front left loudspeaker Radio 10 Not used 11 A Positive signal, low frequency Transceiver/charging electronics 12 Not used 13 E Telephone mute signal Transceiver/charging electronics 14 Not used 15 E Telephone ON signal Transceiver/charging electronics 16 Not used 17 E Positive activation, front right loudspeaker Radio 18 E Positive activation, front left loudspeaker Radio Pin assignments at plug connector X18773 Pin Type Description / Signal type Connection / Measuring notes 1 A Positive activation, front left woofer Left front speaker 2 M Negative activation, front left woofer Left front speaker 3 Not used 4 M Negative activation, front right medium-range speaker Right front speaker 5 A Positive activation, front left mid-range speaker Left front speaker 6 Not used 7 Not used 8 Not used 9 A Positive activation, front right medium-range speaker Right front speaker 10 M Negative activation, front left mid-range speaker Left front speaker 11 A Positive activation, rear right medium-range speaker/tweeter Right rear speaker 12 A Positive activation, front right tweeter Right front speaker 13 A Positive activation, front right woofer Right front speaker 14 A Positive activation, front left tweeter Left front speaker 15 M Negative activation, front left tweeter Left front speaker 16 M Negative activation, rear left medium-range speaker/tweeter Left rear speaker 17 Not used 18 Not used 19 A Positive activation, rear left medium-range speaker/tweeter Left rear speaker 20 Not used 21 Not used 22 Not used 23 Not used 24 M Negative activation, rear right medium-range speaker/tweeter Right rear speaker 25 M Negative activation, front right tweeter Right front speaker 26 M Negative activation, front right woofer Right front speaker Pin assignments at plug connector X01183 Pin Type Description / Signal type Connection / Measuring notes 1 E Central locking signal Audio frequency CD changer |
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This is how I would proceed with the amp testing. Maybe there other, simpler methods I don't know about. Try replacing the amp, maybe it will take care of the problem
Sent from my HTC One X+ using Tapatalk |
As side note I highly doubt speakers you can blow from jumping a car something like a amplifier or head unit finals are more subject to spikes in voltage/amps.
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those DSP amps aren't cheap either...do you have a good salvage yard or 10 nearby to search for the proper DSP amp. A 5-series amps will work, but you have to get them recoded by someone with a DIS as the adjustments are all wrong for the X5 if the amp came from a 5-series (E39 M5's all had DSP).
If it is toast, you might want to just go aftermarket, but that's not cheap either...nor is it simple with DSP vehicles <sigh> |
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