Quake™ 8" Loudspeaker - Steel Frame Driver for PA Speakers

Model #: Quake™ 8 8" Woofer / Speaker 75 Watts RMS / 8 Ohms Replacement 8" Speaker
Usually Ships in 24 Hours
Retail Price
Our Price:
Stock Status:
Out of Stock
Product Code:

 Add To Wishlist
Notify me when this product is back in stock.

Order by phone:

  (9:00 A.M. - 5:00 P.M. CST)


Whether you are building your own speaker cabinet or replacing an old woofer, this 8" speaker woofer is what you need! The Quake™ 8 is a great woofer that produces awesome tone with punchy lows and clear, clean highs! 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 a one 8" steel frame speaker driver pictured and described above. So, put it in your cart today and get ready for years of trouble-free, crystal clear sound!


Quake 8
8 Inch Replacement Loudspeaker (Woofer)
Loudspeaker | PA Speaker | Guitar Speaker
Power Rating
75 Watts RMS - 150 Watts Peak
Nominal Impedance
8 Ohms
Frequency Range
94 dB
Magnet Weight
35 ounce
Voice Coil
Chassis Type
Pressed Steel
Paper Cone/Cloth Edge
Mounting Information
Cut Out Diameter: 7 1/4" Diameter: 8" Magnet Structure Diameter: 3 7/8" Mounting Slot Dimensions: 5/32", 0.156" Number of Mounting Slots: 4 Overall Depth: 3 3/8"
TS Parameters
Resonant Frequency (fs): 89Hz DC Resistance (Re): 6.5 Ohm Mechanical Q (Qms): 8.1 Electromagnetic Q (Qes): 2.9 Total Q (Qts): 2.15 Compliance Equivalent Volume (Vas): 10.76 Ltr Mechanical Compliance of Suspension (Cms): 117 mm/N BL Product (BL): 5.8 Tm Diaphragm Mass Airload (Mms): 27.33g Surface Area of Cone (Sd): 254.5cm2
2.9 lbs
One Year Warranty
Technical Specs
Quake 8 Frequency Response Chart


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.
Read our full shipping policy

Order by 2:30 PM Central Time for delivery to zip code on:

*This is an estimate, not a guarantee.

Change your zip code.

Why shop with us?

  • Free Shipping
  • Order by 2:30pm CST, ships same day!
  • 1 Year Warranty
  • 30 Day Money Back Guarantee
  • Satisfaction Guarantee