SWAT SBT-12 v.2

A few years ago, very few people took this brand seriously, but here one after another extremely successful models began to come out, and in general, the lineup lined up logically. Last year, the initial series of Master (MAS) and Revolution (REV) subwoofers "made some noise" in the segment of affordable SQ, but today I have an older series in my laboratory - Sabotage (SBT). Moreover, also updated, with the index v.2, these subs just went on sale at the beginning of the year. This is not yet a fierce SPL, they can be classified as "civilian", but they are clearly designed for fans of "tossing coal into the furnace."

FIRST STUDY, SPEAKER DESIGN

I won't dwell here too much, there are no super-duper patented solutions in these subs, but in general the design is balanced and without frankly weak points. The speakers are assembled on stamped steel baskets.

Upper suspensions, according to the latest trends, are narrow and high - these allow for a large stroke, but do not eat up the effective radiation area of ​​relatively hefty "lip" suspensions.

Diffusers are traditional pressed cellulose.

The push terminals accept a not too thick cable, you cannot cram some 8 Ga into them, but a 4 sq. mm flies without problems. The leads are sewn through a centering washer.

The centering washers themselves are not just glued to the basket, but also pressed against it with a ring - you certainly won't be able to tear it off around the perimeter. There is also an additional reinforcing ring at the point of attachment to the coil. You can see it if you turn the speaker over and look through the cooling windows.

The voice coil is 2.5 inches in size. Coiled with copper wire and coated with high temperature varnish.

Coil cooling is organized through the windows under the centering washer, the axial channel in the magnetic system and additional holes in the end plate of the magnetic circuit.

Of course, only practice can show the real reliability of subwoofers, but so far everything suggests that they have tried to strengthen potential weak points. The approach is good.

MEASUREMENT OF ELECTROMECHANICAL PARAMETERS

The measurements were carried out, as always, after the "massage" of the centering washers, followed by warming up on the sinus for several hours and cooling down. The parameters of such speakers usually stabilize for a long time, then I will make a small correction for this when calculating. If we take it into account, then getting into the application turned out to be good.

Fs (natural resonance frequency) - 38.2 Hz
Vas (equivalent volume) - 32.2 l
Qms (mechanical quality factor) 6.37
Qes (electrical quality factor) -0.59
Qts (full quality factor) - 0.45
Mms (effective mass of the moving system) 249 g
BL (Electromechanical Coupling Coefficient) 19.9 T m
Re (voice coil DC resistance)4.2 ohm
dBspl (reference sensitivity, 1m, 1W) - 87.4 dB

Rated power, W 700
Nominal resistance, Ohm 2 x 2
Diffuser material Polymer coated cellulose
Suspension material Foamed polyurethane
Basket material Steel
Magnet material Ferrite
Voice coil, inches / cm 2.5 (6.35)
Fs, Hz 38
Qts 0.45
Vas, L 32
Sealed 30L (Qtc - 0.61)
Ported 40 l / 40 Hz
Overall diameter, mm 320
Mounting diameter, mm 282
Mounting depth, mm 150
The weight 10,000


The Sabotage woofers are engineered with the need to reproduce loud bass without compromising on quality.
The Big Roll will provide a huge linear stroke, powerful motor with large ring magnets, high temperature 2.5 ”coil. State-of-the-art, high-tech materials provide great sound and long-term mechanical reliability. Ventilation of the coil through channels in the magnetic system and technological holes in the basket. Speaker calibers: 12 ", 15". Voice coil: 2 x 2Ω