First of all want to apologise to those who might find my questions a bit stupid. I'm new in car audio. I have BMW 2004 e60 530D UK version with business navigation. Audio system at the moment consists of 4 inch speakers in front doors and rear deck. Under seats subs. NO tweeters in the rear deck, not sure about tweeters in the mirror pillars.
1) Sound System X-ION 200 BMW ( + separate set of tweeters and 4 inch speakers for rear deck)
2) Audisson Bit Ten D
3) Alpine PDX-5
1) How do I connect Bit Ted D? Do I use high levels FR-+ FL-+ RR-+ RL -+ from the OEM audio harness? Will it be ok for full spectre of sound? Or do I need to do something with outputs from amp that powers under seat subs?
2) What else needs to be connected to the Bit Ted D? Where do I find "Key MEM" and "Rem In" source that I connect to Bit Ten D input connector? What about phone +, phone -, phone MUTE? Do I still need to connect it to Bit Ten D when I have a factory bluetooth phone connection in my car?
3)Will it be possible to power front(doors and tweets) and rear(4 inch and tweets) by 4 channels on PDX-5, and power both X-ION under seat subs by fifth mono channel?
Its OK to be new, but I don't think you'll get a lot of help if you can't do some basic research first. Most of your questions are easily answered by a few searches on the web and dare I say the Bit Ten manual (that's not a guess - I've just been through an install with one).
If you already have the bluetooth phone on your BMW Business HU, you don't worry about phone inputs on the Bit Ten.
I don't know BMW OEM stereos, so suggest you check out a BMW forum for some more help on that front. If the Business unit outputs line-level, you have a choice of speaker level or line level to the Bit Ten.
I couldn't figure out looking at the speakers you mention whether the underseat subs are in addition to the 3-way set or part of it. If they're part of it, you'll be using four channels of the PDX-5 (2 front, 2 rear) with the crossovers handling splitting the sound. If the underseat subs are in addition, then you would use the 5th channel, but I have no idea of whether your subs will match the impedance or power output of the PDX-5 or wiring options (BMW forum again).
You will need four inputs if you want to use the fader from your head unit.
You only need to worry about rem in, key mem if you can't turn on the Bit Ten through the speaker ins or you have line-level outputs and decide to use them. I can't tell you where you'll find a remote out on the BMW. It may or may not have one. If it doesn't, you may need to find another signal which comes on with the ignition (again this is BMW specific - on my Golf its the cigarette lighter). You may need rem in if the BMW does someting strange with the speaker signals. The Bit Ten is meant to turn on just when the head unit is switched on, but in my Golf, the unit gets powered up as soon as the car is unlocked and stays on for minutes after its locked so I need a different solution. You'll need to research this.
I would say that your BMW underseat amps are probably redundant in this set-up.
A friendly piece of advice. If you're doing this yourself because you're interested and want a project to learn on, then fine, go ahead. Do lots of research and take it slow because its going to take you longer than you think.
If you're doing it to save a few quid, my advice would be to reconsider. You seem out of your depth and may end up regretting not stumping up for some help installing it. There's a ton of stuff you've not even gotten into yet.
I read on the other forum that I can take REM IN from the fuse box in the trunk. So as far as I understand the Bit Ten D will be powered only when the key will be in ignition position if I get it from there. Do I still need to worry about Key Mem source? Or will it ok If I connect just Rem In? All I care about is that my Bit Ten D and amp start working when key is in ignition possition or engine running and off when key is out.
What is better? To get audio source from existing speakers or from HU harness via adaptor?
(Just want to clear all questions in my head before I do it myself or find someone to do it for me)