Long time no see, but I still got the Roomster alive and kicking - even got it inspected with only one note about a dead rear light bulb.

I ordered an cheap 9" android infotainment system to keep oldie a bit more up to date (could add something about that to project thread) and to have some more bells and whistles. I'm planning to change the speakers too. I do have some reasonably nice used Audison 3-way speakers already and while there is oe place for tweeters, those are nowhere near optimally aligned, should be noticeable improvet to make proper tweeter pods to sail panels.

Then the question: where is the high pass filter of the original system? While I could run new cables all the way from the player to doors it would be lot less hassle to use original cables. To do that, I should disable oe tweeters and their filter, but where is the filter?

And yes, the original system is 2-way, let see if I have enough motivation to craft some place to dashboard for midrange. If not, then I'll go 2-way way.

Hi, I just dissembled a lot of my Roomster interior... The tweeter has an electrolytic capacitor attached on rear.
That's the only crossover as far as I can see.

The speaker cable from radio goes into door to the 'woofer', the tweet cable is run in parallel from the door to the pillar.
So I guess using the existing tweet cable for pods is the easiest course of action.