I bought 2 body sound converters from Sinus Live. The Bass Pump III. ICh already had a cheap version, as they are also offered at Ebay. I had them on the PC on the desk chair. That was quite cool – until my little sister got stuck in the cable. Anyway, I bought the good originals this time and they should be in the car. I feel good about the bass, but I don’t always want to make my hearing so loud. will set the parts so that the effect is in the realistic range, so that it fits to the heard bass volume. Please don’t make any discussions about the meaning of these parts. I have already pushed it. With the search function I have found that many people believe the bass pumps, would be to be seen as an alternative to subwoofers and therefore they tempt off as nonsense/weakness. No, they are not an alternative – they should not be at all. It is purely about the subj This is what we would have solved and I can go over to the actual question: According to the operating instructions you should screw the bass pumps with the vehicle floor. Push the seat to the front, remove the carpet, screw on the bass pump, finish. I once sniffed a VW car dealership with a mechanic from the Karrosserie department to ask on I could possibly meet some wires. That would probably not be a test. lem. But he feared that the sheet metal was so strong, with thickness and shape, that it could not be stimulated to swing. Hmm… now experience values are in demand! You don’t drill such a farware floor if it is not sure that the result is as it should be. Has someone already installed such a thing? and can tell me if the vehicle floor is suitable? If so, I would find this an ideal assembly site, as the effect appeared realistic when everything was vibrating the floor. On the other hand, you could screw the parts to the seats, as I had on the PC chair before, but then the seat mainly vibrates and because you feel nothing at the feet, you might rather notice that it is not real. Again. Please only comments that concern the assembly and do not doubt the meaning.