I got new speakers in my car but I still want to use the old ones. Is there a way to hook them up to a receiver and use them inside?
yeah. if your stereo has a place to plug in speaker wire, just hook them up - they should work
id look for more speaker inputs in your headunit. but make sure your old speakers can handle the same wattage and ohms as your new ones. if your headunit doesnt have more speaker outputs then you could also wire your old speakers to the new speakers, but this will make them quieter and i just dont suggest doing it. it could cause damage