Price Paid:  $1499.00 from Dealership

Summary:
ABSOLUTELY the BEST subwoofer that you will ever get at an affordable price. I'm telling you this is worth double what I paid. It'll literally shake your boots off. My flat mates love it though my neighbors do not. I'm in London, UK and I gotta tell you that it's the perfect item for your home theater. Top of the line at a moderate price.

Strengths:
Everything about it will make you smile

Weaknesses:
none...

Similar Products Used:
no need... this is it.

Price Paid:  $840.00 from Factory direct

Summary:
I work as a salesman/installer for a Hi-Fi store. We carry M&K, Energy Loudspeakers, Polk Audio and others. I have listened to most of M&K's subs and bought the MX150 for my self. The MX150 is one of M&K's best. It is very tight for just 150w RMS. I use the spec RMS because M&K's amps have tons of headroom. It can dig low. 20Hz at least, if not lower.(Play the 20Hz sinewave test on the 5.1 audio toolkit disc.) I also have yet to hear it distort, break up or stress at all. My Marantz SR8200 is calibrated to THX reference level and I normally listen to movie sound tracks at -15db. Honestly, I'm afraid to push it to the point of distress. My windows rattled so bad when I tried with test signals they sounded like they were going to break. The MX150 is a great sub. If you want REAL subwoofer that can call down the THUNDER and are shopping in the $700+ range, I highly recommend you go listen it.

Strengths:
Tight. Deep. Alomost can't be stressed.

Weaknesses:
Big...WAF is Low

Similar Products Used:
I've listened to... M&K- V1250, MX350. Energy- eXLS12. Paradigm- SERVO15. Velodyne- SPL-1000. Wilson Audio Specialties- Watchdog(Not impressed for $10,000).

Price Paid:  $1600.00 from Birmingham United Ki

Summary:
I have the 150 Mark 2 THX Ultra

I cannot believe how good this subwoofer is. The subwoofer timing when on and off is very good. Music is very good, and films are simple great.

This will blow you away.

Strengths:
Too many to say,

But you will love this subwoofer.

Weaknesses:
More people should have one.

Similar Products Used:
As many as i could try out. such as the B&W e.c.t

Price Paid:  $1050.00 from Audio 5.1

Summary:
This is an excellent product! Very low and deep bass is produced with this thing, along with a "punch" that's hard to match. The low pass filter removes mid-bass from the subwoofer thereby preventing loud and muddy bass from overpowering the rest of they system while watching a DVD. For the price I paid, it was a steal.

Strengths:
Deep, Loud Bass. Low pass filter removes overpowering mid-bass. Magnetically Shielded.

Weaknesses:
Too big.

Similar Products Used:
Velodyne CT-100, Monitor Audio ASW110

Price Paid:  $1000.00 from WELLMAN & GRIFFITH, INC.

Summary:
Im not by anymeans an Audiophilest but I do listen well, one day I mentioned to my Brother I was going to go buy a good subwoofer and he asked me how much I was going to spend, I replied in shame $500.00 bucks just on a woofer. He then recomended to me the M&K MX150 that he owned at only twice the money $1000.00 bucks well I took his advice and purchased it without ever listening to it, it turned out to be the best audio purchase of my life.
The old rumbles turned out to be highly accurate earthquakes and drums even with my cheap Dolby Digital receiver. My bass sounds better to me than at the new Imax theaters. My goal is to eventualy replace all my equipment with the THX endorsement. Then again why? Im happy with the sound coupled with my Apogee Centaur Minors. I have heard my buddies similiar priced Definitive Techcnoligy sub he purchased to match his main speakers and I hear that strange rumble again when pushed but I kept my mouth zipped.
M&K all the way :)

Strengths:
Can reproduce an earthquake with perfection

Weaknesses:
Bass so intense it makes my Beer go flat!

Similar Products Used:
Cambridge Soundworks powered sub PSW2 + A realistic subwoofer.