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Description
Four RAMPAGE 8" DVC 1000W RMS Subwoofer w/ TruSpec Vented Quad 8" EnclosureIncludes four B2 Audio RAMPAGE 8" subwoofers and one Tru Spec quad 8" vented enclosure Choose from Dual 1 Ohm or Dual 2 Ohm voice coil configurations for system flexibility Enclosure tuned to 35 Hz with 3. 50 ft net internal volume and 52 in port area Ideal for demo vehicles or compact SPL builds requiring high output B2 Audio Quad 8" RAMPAGE Subwoofer Combo with Tru Spec Back Vented 4x8 Enclosure This listing includes: (4) B2 Audio RAMPAGE Series 8"
- Includes four B2 Audio RAMPAGE 8" subwoofers and one Tru Spec quad 8" vented enclosure
- Choose from Dual 1-Ohm or Dual 2-Ohm voice coil configurations for system flexibility
- Enclosure tuned to 35 Hz with 3.50 ft³ net internal volume and 52 in² port area
- Ideal for demo vehicles or compact SPL builds requiring high output
B2 Audio Quad 8" RAMPAGE Subwoofer Combo with Tru Spec Back Vented 4x8 Enclosure
This listing includes:
- (4) B2 Audio RAMPAGE Series 8" Dual Voice Coil Subwoofers (Choose between Dual 1-Ohm or Dual 2-Ohm models)
- (1) Tru Spec Back Vented Prefab Four Up Port 8" Subwoofer Enclosure (GP-4-8-SUB)
Built for serious bass performance, this quad 8" combo brings thunderous output in a tight, efficient design. The B2 Audio RAMPAGE8 subwoofers each handle 1000 watts RMS, featuring 2 inch voice coils, 300 oz magnets, and long-excursion suspension for deep, hard-hitting lows. Choose between Dual 1-Ohm or Dual 2-Ohm configurations to match your amp setup. The Tru Spec GP-4-8-SUB enclosure offers 3.50 cubic feet of net internal volume (after sub displacement) and is tuned to 35 Hz with a 52 in port area, all built from 0.75" MDF for durability and optimal airflow. Ideal for demo builds or daily drivers that need max SPL in minimal space.
Subwoofer Specifications (RAMPAGE8-D1-V2 or RAMPAGE8-D2-V2):
- RMS Power Handling: 1000 Watts
- Max Power Handling: 2000 Watts
- Frequency Response: 10 Hz to 500 Hz
- Nominal Impedance: Dual 1 Ohm (D1) or Dual 2 Ohm (D2)
- Voice Coil Diameter: 2 inch
- Sensitivity: 83.8 dB
- Magnet Weight: 300 oz
- Displacement Volume: 3.3 L / 0.115 cu ft
- Free Air Resonance (Fs): 39 Hz
- Resistance (Re): 1 Ohm (D1)
- Qms: 5.67
- Qes: 0.55
- Qts: 0.5
- Vas: 5.4 L
- Cms: 100 um/N
- Mms: 135.1 g
- BL: 72 TM
- Xmax: 20 mm
- Overall Diameter: 8.66 in
- Mounting Diameter: 7.84 in
- Front Mount Baffle Cutout: 7.28 in
- Overall Depth: 7.09 in
- Mounting Depth: 5.91 in
Enclosure Specifications (GP-4-8-SUB):
- Material Thickness: 0.75 in
- Net Internal Volume (post displacement): 3.50 ft
- Tuning Frequency: 35 Hz
- Port Area: 52.00 in
- Cutout Diameter: 7.45 in
- Flush Trim Diameter: 9.00 in
- External Dimensions (Length x Width x Height): 34.00 in x 14.00 in x 22.00 in
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 3
Ok, but don’t use hand cream
Color: Black, Color: Black
I like the case for its ability to house the keyboard, the pencil and the iPad in one convenient place. I find that the magnetic closure and magnets holding the keyboard are not as strong as a previous case I had purchased. The keyboard is great, I like the touchpad and the backlight colors. The cover material is not hand lotion friendly! I’ve tried water and lens cleaning wipes, and neither gets this cover clean. I hesitate to use any chemicals because the material is the type that will get sticky and nasty, and I don’t like that. I’ve included a photo of what the cover looks like after using a lens cleaning wipe. If the magnets were stronger and the cover material easier to clean, I would buy again.
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Reviewed in the United States on February 27, 2026
★★★★★ 4
great case!
Color: Navy Blue
pros; the color is beautiful. I picked the navy blue. It is exactly as the description described. It goes very well with my blue iPad. The size is very precise and fits perfectly on my iPad. The magnet that holds the case together is very strong. The iPad itself can pivot vertically and horizontally using that magnet. This works very smooth. The magnet closure for the case itself is strong and holds well. The magnet that holds the keyboard in place also works very well. Cons; when the keyboard is in its correct position, it is difficult to angle the iPad in front into the provided grooves. The keyboard gets into the way. This prevents the iPad from reaching the grooves provided. The keyboard feels very light and cheap.
The keyboard itself connected with the Bluetooth very easily. It works wonderful. I love the back light on the keyboard. The color of the keyboard is wonderful. However, as I said above, it does feel a bit cheap. But for 20 bucks, what can you ask for.
When the case is folded together with the keyboard in the iPad, it is a bit bulky. But I knew that from the previous reviews and was expecting it.
What I love most about this case is that the iPad can be removed using the magnet on the back from the keyboard portion, but it is still protected by the exterior plastic case. So in situations where I don’t need to use my keyboard, I can remove the iPad itself and know that it’s still protected overall I recommend this product.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Nice Case & Keyboard
Color: Blue
Love this case with a keyboard. I like using the keyboard vs using one on the screen of iPad. And the keyboard has rechargeable batteries instead of having to buy batteries. And it protects my iPad.
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Reviewed in the United States on May 20, 2026
★★★★★ 1
Beautiful, and everything I want it except that the keyboard keys didn’t work😭
Color: Light Pink
I searched and search for the right keyboard case for me. The most important thing for me was to be able to remove the iPad case itself from the whole case and keyboard, and this one was it. Unfortunately, when I started checking the keyboard a lot of The keys were not output in the correct symbol or letters. So defeats the whole purpose of having a keyboard. I returned it and asked for a replacement, thinking that the item was defected, but when I got the New replacement, it was the same thing so I tried to contact the seller, but there was no option to do that. Therefore, I had to return the second replacement keyboard and look for another keyboard cover.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Quality and Functional
Color: Navy Blue, Color: Navy Blue
I was looking for a case that could rotate and includes a keyboard. I have the gen 5 Ipad Air and it fits just fine. The part that rotates is magnetic (pretty strong) so if i just want the part with the ipad, I can just take it off. Keyboard is magnetic and the touchpad is such a bonus. It was easy to connect and every key works (can also change light color). Im also really impressed with the quality of the case, its pretty thick and even the plastic is nice. The navy blue color is also super cute, wish they had a dark red color too.
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Reviewed in the United States on May 13, 2026