Acoustic Audio AABASS12 (B.A.S.S. 12) Data Page
Our measurements, Unit #1:
Fs = 32.92Hz
Qms = 3.642
Qes = 1.022
Qts = 0.7977
Vas = 145.03 Liters
Cms = 3.867E-04 M/N
Re = 3.82 Ohms
BL = 6.837 N/A*
Sd = 0.05167 Sq. Meters
Mms = 0.06044 Kg
Ref Efficiency = 0.4868 %
Predicted Output = 89.073 dB/1W/1M
Predicted Sensitivity = 89.28 dB/2.00v/1M**
Predicted Sensitivity = 92.28 dB/2.83v/1M**
Xmax = 5 (???) mm (No mfgr. spec. available.)
Xmech = 22 mm p-p (It will go to 25-26 mm, but we think sustained / continuous operation at this level might damage the speaker, and it is getting pretty noisy / distorted at 25 mm.)
Le = 0.507 mH
*Direct BL crosscheck = 6.868 N/A.
**LMS curve shows 300Hz output @ ~92.5 dB/2.83v/1M and
sloping slightly downward; output @ 550 Hz is down to 91.1dB,
before it rises to approx. 96 dB around 700-1500Hz. It peaks
rather raggedly above 1700 Hz, and then rolls off for good above
3500 Hz.)
Measurement conditions:
Broken in 12+ hours, Rest 12+ hours.
Temperature = 24.3° C, Humidity = 78%
——————————————————————————-
Other observations:
The voice coil is actually 1 1/2″ diameter.
The cone is wet look paper. (Ditto for the dustcap.) Who knows what a “poly zirconium” cone is supposed to be.
We did not test a unit to destruction, but we did run some continuous test tones, and estimate long term (8-hour industry std.) thermal power handling to be around 80 watts. (At some point, we’ll put one in a cabinet and run it hard for a while, on “subwoofer” music material, off one channel of a Hafler DH-220, and see how quickly it heats up!)
Neither we nor anyone we asked has any idea what a “Parabolic RFL voice coil” is.
Typical 60 oz. magnets are about 6 1/8″ O.D. x .83″ thick. The AABASS12 magnet is 5 1/2″ O.D. x 0.8″ thick — probably a 35-42 oz. magnet, depending on its inside diameter. Not bad, for the price.
The roll looks like a normal size rubber roll to us, which is actually just fine, for this speaker. Why exaggerate…?
Mid-Q design? Well, if you call a Qts of almost 0.8 “Mid-Q”…
Flat, progressive roll design? Well, it’s flat.
CEA cooling technology? Another made-up term, it appears. CEA is an industry power testing standard, not a “technology” or type of design.
Vented and extended pole piece. Yes, it is vented. We’d be curious to know what the pole extension actually is, though. (None of our customers have had one fail, so we have not torn one down, yet!)
Low carbon plates? Low carbon steel top plates and t-yokes are std. in most speakers. In fact, the t-yoke has to be fairly low carbon / soft steel, or it’d be hard to form.
Weather resistant design. This is a bit of an exaggeration, as the unit has a std. wet look paper cone and dust cap. The dust cap is glued on with a water base glue that resists water somewhat – you’re ok if it only rains an hour, we guess. Definitely do not play these in wet conditions.
“Approved for car audio and marine use.” Ok, we’ll believe the 1st half of that. These are definitely NOT a true marine speaker — see above, and more info. below. We wonder who did the approving?
The “best” part is “Suggested Retail $299.98 Pair, Manufacturer’s Unilateral Pricing Policy Strictly Enforced”. Heheheh – these can easily be purchased for well under $100/pair from their largest authorized distributor. (If you doubt this, go check on the Internet!)
Oddly enough, though, we only “dis” these so much, and we have actually decided to try selling them: It’s the big time seller’s sales pitch, not the woofer itself, that we have a problem with. These are in fact a nice 12″ woofer for $60/pr, if the specs work out for you, and, they probably should be ok in a modest power car system car or a well-sheltered outdoor location where they would not get rained on, splashed on, etc. We just wish the original manufacturer / distributor did not so grossly exaggerate the information on these.
These might work rather well in moderate power, large sealed boxes, or infinite baffle uses. Transmission line enclosures with high damping might be another usage. Eq’d dipoles, using several per side, might be yet another intriguing possibility. The price certainly fits into such a scenario.

