Best Inexpensive Subwoofer

Yes, they appear to be very similar. Meridian also makes an active bookshelf speaker with digital inputs now.

My ADM9.1's have:

1) one analog (RCA L/R) input
2) two digital (optical/Toslink) inputs
3) one analog subwoofer output (RCA)
4) one analog slave output (RCA) which connects to the right
speaker.

The remote IR receiver is above the port on the left speaker.

The speakers do everything an amp/preamp will do via remote control.

I use both digital inputs, one from my DVD Player and one from my Satellite Receiver/DVR.

The speakers are outstanding.

Drew & Bob,

Thanks for the thoughtful responses. I'm aware that displacement is the relevant measure, but I assumed that a smaller driver would have the benefits of lower mass - usually key to acceleration. Evidently motor considerations are more critical here - makes some sense. I'll have to learn a bit more about the physics of these devices. I can say, pretty unequivocally, that from A1 on up through the next 2 octaves I'm getting phenomenal results right now. It may be that my listening levels are insufficcient to tax the 8" subs into audible distress (at least audible to me!)

BTW The PEq has 2 functions:

1) A boost at 20hz followed by some cut a bit higher up (differs one sub to the other, but in both cases allows effective response to 25hz). I detect no distortion on organ tones around this frequency, but others may be able to hear what I can't. Defeating the PEq essentially removes this info from the music.

2) Smoothing at/around the x-over frequency. This has been the most critical element of the excellent performance I'm getting. Defeating the PEq yields instantly audible deterioration.

Marty