Quake™ 18" Steel Frame Subwoofer Driver (Pair)

Model #: Quake™ 18 (Pair) 18" Woofer / Speaker 500 Watts RMS / 8 Ohms Replacement 18" Speaker
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Whether you are building your own speaker cabinet or replacing an old woofer, this 18" speaker woofer is what you need! The Quake ™ 18 is a great woofer that produces awesome tone with punchy lows! At 500 Watts RMS, this speaker can handle what most amps can throw at it. Great woofers are very hard to find, especially at a decent price. The Seismic Audio brand was designed to make the professional musician, as well as the musician low on cash, sound great. With your purchase, you will receive two 18" steel frame speaker drivers pictured and described above. So, put it in your cart today and get ready for years of trouble-free, crystal clear sound!


Quake 18 (Pair)
Pair of 18 Inch Replacement Subwoofers (Woofers)
Subwoofers | PA Subwoofers
Power Rating
500 Watts RMS - 1000 Watts Peak each
Nominal Impedance
8 Ohms
Frequency Range
Magnet Weight
90 ounce
Voice Coil
Chassis Type
Pressed Steel
Paper Cone/Cloth Edge
Mounting Information
Cut Out Diameter: 16 5/8" Diameter: 18 1/8" Magnet Structure Diameter: 7 7/8" Mounting Slot Dimensions: 1/4", 0.25" Number of Mounting Slots: 8 Overall Depth: 7 3/4"
TS Parameters
Resonant Frequency (fs): 34Hz DC Resistance (Re): 6.3 Ohm Mechanical Q (Qms): 2.3 Electromagnetic Q (Qes): 0.65 Total Q (Qts): 0.5 Compliance Equivalent Volume (Vas): 299 Ltr Mechanical Compliance of Suspension (Cms): 149mm/N BL Product (BL): 17.4 Tm Diaphragm Mass Airload (Mms): 145g Surface Area of Cone (Sd): 1.2k cm2
18.1 lbs each
One Year Warranty
Technical Specs
Frequency Response 8?

Quake 18 Frequency Response Chart

Bundled Specifications


When will I get my order?

We realize that you want your Pro Audio Equipment yesterday. Here at Seismic Audio Speakers, we aim to ship items out immediately. If you place your order before 2:30 Central time, we will ship your pro audio equipment on the very same business day.
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