So, a friend of mine gave me a combo amp that I want to use just as a cab, since I got my own amp. The thing is, he couldn't tell me anything about the speaker in it. He said he replaced the speaker not long before he stopped using that combo. The combo is 90 watts, so I must assume the speaker in there is close to that. 1st question: Is there a way I can know impedance and wattage of that speaker? Only thing left in the sticker in its back is HH Acoustics, so I only know the brand really.. 2nd question: About how far could I push the speaker without damaging it, considering my amp pushes [email protected] and [email protected]? Keep in mind I have no idea what's the speaker impedance.. PS: If it helps in anyway, the combo is an old Carlsbro Cobra 90 BG.