Hi to all of them. have a big problem… have a little audio80 and wanted to have something better than the factory speakers. so I installed an alpine cda-9857r front and rear system are the heart dsk 165 and as an amplifier one of sioux the probably net so the hammer is however no matter… well then I looked at the instruction of the heart boxes as I connected the with the funny little things (though frequency soft) that I come to my 4 ohms… a small drawing k ommt still how I connected it and how it was also in the instruction… now I measured the resistance, since I am still net completely finished and with the front system MEGAohm come out with the rear system, which I still net wired 4.5 ohm… now I know grad net what can this be?? would be happy about every answer since I would like to listen to music again in the car as soon as possible… so thank you to all who have read this and the troubles me eight have ne answer to write. mfg cisco