Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm
Best box: 17.9 L bass reflex tuned to 42.2 Hz · F3 40.0 Hz
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Comparable 8.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 17.9 Liters |
| Tuning Frequency (Fb) | 42.2 Hz |
| F3 (-3 dB Cutoff) | 40.0 Hz |
| F6 / F10 Extension | 35.7 Hz / 31.7 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 29.3 cm |
| First Pipe Resonance | 587.0 Hz |
| Estimated MOL @ F3 | 113.2 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 7.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 76.3 Hz |
| F3 (-3 dB Cutoff) | 77.3 Hz |
| F6 / F10 Extension | 58.4 Hz / 44.1 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 46.2 Hz |
| Total Q (Qts) | 0.422 |
| Electrical Q (Qes) | 0.446 |
| Mechanical Q (Qms) | 7.98 |
| Equivalent Volume (Vas) | 14.2 Liters |
| Diaphragm Area (Sd) | 220.0 cm² |
| DC Resistance (Re) | 3.6 Ω |
| Efficiency Bandwidth Product (EBP) | 103.7 |
| Linear Excursion (Xmax) | 10.0 mm |
| Thermal Power (Pe) | 900.0 W |
| Nominal Diameter | 8.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm?
Load Forge's calculated alignment puts Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm in a 17.9 liter vented enclosure tuned to 42.2 Hz, reaching an F3 cutoff of approximately 40.0 Hz.
Can Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 7.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 77.3 Hz.
What port dimensions should be used for Discontinued HIPPOXL84R - 8" 900 Watts RMS Dual 4 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 29.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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