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Full potencial THA 555PnP
I've just installed Blaupunkt THA 555PnP with the stock cable harness. One problem, since the subwoofers and the front speakers are wired together on my E90 basic system, the cable harness doesn't use the 5th channel (sub).
So this is what I've done, do this for both sides:
- remove front seat, remove woofer cover.
- Cut cable at the woofer and re-wire new cable from woofer to the amp. and connect to sub terminal.
Now the sub-woofer gets power of their own. Also, you can use the remote bass level control.
So far I don't see I need to replace the subwoofers.
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