I realise this is an old thread but it is the most useful I have found. I have an Audison AP 5.9 and would like to know where you picked up the cables into the doors for the midrange.I also considered the LCQ-1 before deciding to go with a DSP. I found the LCQ-1 (on paper) to have less EQ parameters than needed to get rid of the horrible factory EQ-ing. Factory EQ is really boosted around 2500-4000hz to make the stock speakers sound good and the LCQ-1 has adjustment for 2Khz and 8Khz... Might work ok, but I decided to go another route.
The underseat woofers are fullrange and are parallelly connected with the front door speakers to make the total amp-load 2ohm (booth door speakers and under seat woofers are 4ohm).
Easiest is to take the signal at the under seat woofer connection, run it back to the boot where you have the LCQ-1 and amps. And then run speaker cables back to the the same place to connect the upgrded under seat woofer and door separately.
Once you remove the seat and speaker grill to access the speaker wiring it will be very obvious how to connect it, you dont need to know the colors of the specific wires.
Im running an Audison AP 8.9 DSP with built in 8 channel amp. Earthquake SWS 8Xi under seat subs, Helix Coaxials and a Hertz 10" sub.
I did not want to spend 250 euros a piece for the HK A-pillar covers (for tweeters), and did not want to cut up the interior to mount separate tweeters and went with coaxials which i regret slightly now. Might upgrade to components up front.
How many input channels do you have into the DSP? The fronts are easy take the feed that goes to the sub's connector and send that to your DSP. It is at the plug where the parallel connection to the doors are made. So the DSP then outputs one channel for the sub and outputs a second channel for the door. After amplification you can install the cross-overs and connect the mid output to the old door connection and connect the tweeter output to a long wire and feed it up to the a-pillar. My cross-overs are under the seats plenty of room there. In my F56 my Audison F5.9 (Amp/DSP) it creates a centre channel so I also took long wires from the F5.9 to the dash for centre speakers. I had to buy (cheap ebay) a new fressh air grill, probably part nr 64229262803 for your F55 if you wish do the same. I don't like rear channels so I left it connected to the head unit, the rear speakers are so quiet they don't interfere. For you finding the cable that feeds the rear door speakers may be tough. One final point I connected both subs in parallel to lower to 2 ohms which increase the F5.9 power from 150 to 270 watts.I will follow this, revitalized, thread with great interest as I am about to oboard as well on the audio-upgrade voyage. We have a F55 with base audio and the 'simple' HU. I want to install:
Unfortunately through this thread and others, also on other fora, I learned under seat woofers and mid-ranges in the front doors are parallely connected on a single cable coming from the HU. This increases the challenge a little. I'm now looking for ideas how to setup now. I don't wanna send the unfiltered signals to the underseats so am hoping to be able to either actively or otherwise passively filter the underseat woofers and still be able to send a full signal to the MB Quart in the doors which I can filter with the cross-over's. Would this be possible?
- MB Quart QM100c BMW (front)
- MB Quart QM100x BMW (rear)
- MB Quart QM-200 BWM (under seat)
- BLAM RA 704 DSP PRO
It is easier and cheaper to upgrade to a new amp and speakers than to try to go the HK route when you will need a full set of HK speakers, HK amp and wiring from head unit to amp and amp to speakers. Go to the dealers and get a quote and go to an aftermarket installer and get a quote from there. Then you will have the definite answer you want.Hello all i hope you are all ok?
I havs a 2016 SD and love it apart from the audio, like everyone else i have the basic 4 and 2, iv read loads of things about upgrading speaker's, amp's etc, anything that is done is going to cost lots of time and effort so why can't we just add the speakers and a hk amp with all the wires and change the visual boost head unit to a hk one??? Can it be done this simply or is there coding and other stuph that need a pro? Does anyone know exactly what is needed other than the obvious. How much would it be to take it into a dealers to get this all done?
Im asking as there is no definite answer i can see personally iv got no problem with electronics running wires etc but just need real definate answers