Hello together, I am proud owner of a Blaupunkt LOS Angeles MP71. The fine radio has an extra bass output and all the snaps you can use. I had first thought about getting end stages and then wiring everything. But since I am by nature lazy, I wanted to install it without it. I now have 2 loudspeakers for front and back in it. But unfortunately scratching them when I turn up at 50(max 66) . What a boxing system you could me so I can turn up the radio fully. I thank you for the answers. lg Maik