REDCATT DR-8-020-4R-B2-C0001
Best box: 29.4 L bass reflex tuned to 28.7 Hz · F3 36.5 Hz
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Comparable 8.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the REDCATT DR-8-020-4R-B2-C0001 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) | 29.4 Liters |
| Tuning Frequency (Fb) | 28.7 Hz |
| F3 (-3 dB Cutoff) | 36.5 Hz |
| F6 / F10 Extension | 26.5 Hz / 21.9 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 20.7 cm |
| First Pipe Resonance | 830.0 Hz |
| Estimated MOL @ F3 | 106.8 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 50.5 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 47.6 Hz |
| F3 (-3 dB Cutoff) | 45.1 Hz |
| F6 / F10 Extension | 34.8 Hz / 26.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 41.0 Hz |
| Total Q (Qts) | 0.6 |
| Electrical Q (Qes) | 0.7 |
| Mechanical Q (Qms) | 4.2 |
| Equivalent Volume (Vas) | 19.6 Liters |
| Diaphragm Area (Sd) | 202.3 cm² |
| DC Resistance (Re) | 4.0 Ω |
| Efficiency Bandwidth Product (EBP) | 58.6 |
| Linear Excursion (Xmax) | 8.7 mm |
| Thermal Power (Pe) | N/A 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 REDCATT DR-8-020-4R-B2-C0001?
Load Forge's calculated alignment puts REDCATT DR-8-020-4R-B2-C0001 in a 29.4 liter vented enclosure tuned to 28.7 Hz, reaching an F3 cutoff of approximately 36.5 Hz.
Can REDCATT DR-8-020-4R-B2-C0001 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 50.5 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 45.1 Hz.
What port dimensions should be used for REDCATT DR-8-020-4R-B2-C0001 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 20.7 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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