Ok, thanks for both your views. In fact I haven't used my subwoofer for some time. The sub amp needs a little repairing and it is in the hands of of a skilled technician now. In any case, I have three more questions...what is a "PM"...I'm really not up to speed with these designations. Additionally, Fred...do you think the M80 will do the job on its own w/o a sub? Alan indicated to me that the M80 will do a superb job for all but the most demanding lower frequencies, but with the addition of a sub, the lower end will have more punch and most probably be better balanced with the rest of the sound coming from the speaker. In your opinion, given that I have the funds (and I do) is the cost differential between the 80's with or without the sub and the M22's with the sub worth it? I am careful with $, that's probably why I can afford the 80's....Thanks...Lee