I used them in a homemade bookshelf speaker system which was lightly used and never driven hard. The product number is 8945P. They are 8ohm and 100 watts maximum. These speakers make a great replacement part for any speaker utilizing a 7 inch driver or can be used for your own home project. Although this listing is for two (2) drivers I have a total of four (4) so if you need four for a project just shoot me a note.