Price Paid:  $0.00

Summary:
This sub, if you can find one is an extraordinary find. I purchased this on ebay, to replace a Polk ten inch sub-woofer that was not musical at all. If you do the math two 7 inch drivers have almost exactly the same surface area as a single ten inch.

I recommend these for and addition to a stereo system. Tight, Tight bass! With the adjustable crossover it will blend seamlessly into your system. No boom, no avalanche of exaggerated bass that does not belong. It you like thunking because... I don't know why you would, Find bigger drivers, put them in a poor inclosure (so as it will vibrate) causing intense and distored vibration.

This sub is musical and makes a great addition to a stereo, floor standing as well as bookshelf. Full range speakers are best but you can't go wrong with this addition to your stereo.

Price Paid:  $60.00 from e-bay

Summary:
This is a fine acoustic music sub. It will not be suitable for the mind-numbing thump of disco or the room shaking explosions on movies.

If you are looking to add a couple of high quality octaves to the bottom of your bookshelf speakers, these are superb. They are extremely accurate and musical. Tympani, tubas, acoustic bass, and piano just sound great.

If you listen to jazz, classical, classic rock, and country, you'll love these. If you're building a disco palace, a hip hop club, or watching a special effects film festival, you'll be disappointed.

I know these go down to at least 25 Hz because I have tested them. 25 Hz is the lowest tone on my test CD and the sound meter picked recorded it at only -2 dB. The 25 Hz tone rattles the pictures hanging on my walls. Since the lowest fundamental tone on an acoustic instrument is 28 Hz, these subs do the job just fine.

But that's all just meters and numbers. The real test is listening, and everyone who hears them, really likes them. They reproduce real music, not one-note thumps. A stand-up bass on these subs is a thing of beauty.

Strengths:
Beautiful, musical, accurate sound down below 30 Hz.

So cheap I was able to buy two and have true stereo sub-bass.

Weaknesses:
Lousy speaker clips instead of binding posts.

Similar Products Used:
Large full range speakers like AR 3a, and Tannoy that didn't need sub-woofers.

Price Paid:  $85.00 from Ebay

Summary:
I'm a college student on a tight budget, but I still want my music to sound good. And being used to the sound of the classic AR-90's I have at home, it's hard to compare. After reading reviews on this sub I decided it would be great for my dorm room. It is AMAZING!! Even though all my equipment is pretty old (70's Nikko TRM-600 amplifier, 1981 Pioneer SG-8 equalizer, and newer Mirage M-90i speakers) the yamaha really brought my system to life. In fact it souds much better than systems costing much more that have considerably more power.

Strengths:
Strong, tight, clear bass

Weaknesses:
None

Similar Products Used:
A whole bunch of supposedly high end computer sound systems.

Price Paid:  $200.00 from Far East Trader Subi

Summary:
Combined with Tangent T-10's, T-40's and T-50's by Klipsh and Yamaha's MX-1000 amp, you could not have a better combo in 1991. I'm sad to say that the amp met it's match and is no longer with us. This sub still rocks the house. It's hard to find the flexability this thing gives you.

Strengths:
Durability, Longevity, Flexability, Clean sound quality

Weaknesses:
Hard punches, it is a little too smooth.

Price Paid:  $199.00 from Stereo Plant, Bend

Summary:
Just to have an original owners voice...
I bought mine new in 1992 and have used it continuously since. It has outlasted the first stereo amplifier and three TV sets. It stills sounds great, better than most I've seen on the market recently for way more than I paid 11 years ago.

Strengths:
Sound, size, adjustability, longevity

Weaknesses:
None that I can see