well this panasonic dvd home theater reciever i have saids its rated at around 150 wrms through its sub channel but all the channels are rated at 6ohm,s and i dont know if it would be safe on the reciever to run it at 4ohms so i thought ild try to find a good 6ohm sub and build a enclosure for it heres the model info on the reciever panasonic sa-ht75 if antone can find out if it will run at 4ohms that would be great .....thanks