Alumapro Alusonic EX 8 Free-Air 8-Inch Metal Cone Subwoofer
Alumapro Alusonic EX 8 Free-Air 8-Inch Metal Cone Subwoofer
Pre-order — current lead time is 4 weeks. Each Alusonic EX is hand built to order. Order now to reserve yours; it ships as soon as it's built.
Power rating: 150 W RMS / 250 W peak.
The Alusonic EX 8 Free-Air is the EX 8 built for free-air (infinite baffle), vented and bandpass installs. Mount it on a rear deck or trunk baffle with no box at all, or build a bandpass enclosure for extra output down low.
Highlights
- Proprietary aluminum cone
- Heat-dissipating integrated cone assembly
- High-temp aluminum composite voice coil
- Massive vented motor structure
- Precision suspension system with high-roll Santoprene rubber surround
- Heavy-gauge steel frame, 4.5-inch mounting depth
- Can be used in free-air, vented and bandpass applications
- 150 W RMS / 250 W peak
- Available in single 4-ohm or dual 4-ohm voice coil
Best for
Rear-deck and trunk-baffle installs, or bandpass boxes where you want more low-end output. Also available: the Alusonic EX 8.
Specifications
| Parameter | Single 4 Ohm | Dual 4 Ohm |
|---|---|---|
| Impedance (Ohms) | 4 | 4/4 DVC |
| Fs (Hz) | 41 | 38 |
| Qms | 5.5 | 7.6 |
| Qes | .95 | .60 |
| Qts | .80 | .55 |
| Vas (Ft³) | .50 | .56 |
| Re (Ohms) | 3.9 | 1.7 (Par) 6.8 (Ser) |
| Xmax (mm) | 10 | 10 |
Mounting dimensions (inches)
| Diameter | 8.25" |
|---|---|
| Mounting diameter (cutout) | 7.125" |
| Bolt circle diameter | 7.88" |
| Mounting depth | 4.5" |
Recommended enclosures
- Free-air / infinite baffle: rear deck or trunk baffle, up to 150 W RMS
- Vented: supported application
- Bandpass: sealed chamber 0.35 ft³, vented chamber 0.35 ft³, tuned 60–65 Hz
The Alumapro difference
Alumapro has built aluminum-cone subwoofers in the USA since 1994. An aluminum alloy cone stays rigid under power where paper and poly cones flex, and it helps draw heat away from the voice coil, so bass stays tight and controlled when you turn it up. Every Alumapro sub is hand built in Huntley, Illinois.
Buy direct from ShopAlumapro.com, the main online home of Alumapro. Every order comes with the 2-year warranty, free shipping on orders of $499 or more, and real support from our team in Cary, Illinois. Questions about your build? Talk to us.
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