REDCATT DR-6-006-4R-B2-C0001
Best box: 6.9 L bass reflex tuned to 57.1 Hz · F3 79.5 Hz
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Comparable 6.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the REDCATT DR-6-006-4R-B2-C0001 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- The textbook alignment (6.9 L at 54.4 Hz) would need a 48.4 cm port; the recommendation is retuned to 6.9 L at 57.1 Hz so the port can be built.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 6.9 Liters |
| Tuning Frequency (Fb) | 57.1 Hz |
| F3 (-3 dB Cutoff) | 79.5 Hz |
| F6 / F10 Extension | 66.1 Hz / 51.1 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 43.5 cm |
| First Pipe Resonance | 395.0 Hz |
| Estimated MOL @ F3 | 114.2 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.72 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.018; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 8.6 Liters |
| System Q (Qtc) | 1.018 (above Butterworth: Qtc cannot fall below Qts (0.72)) |
| System Resonance (Fc) | 90.5 Hz |
| F3 (-3 dB Cutoff) | 76.8 Hz |
| F6 / F10 Extension | 63.4 Hz / 50.8 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 64.0 Hz |
| Total Q (Qts) | 0.72 |
| Electrical Q (Qes) | 0.96 |
| Mechanical Q (Qms) | 2.88 |
| Equivalent Volume (Vas) | 8.6 Liters |
| Diaphragm Area (Sd) | 132.7 cm² |
| DC Resistance (Re) | 3.1 Ω |
| Efficiency Bandwidth Product (EBP) | 66.7 |
| Linear Excursion (Xmax) | 8.1 mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 6.0" |
| 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-6-006-4R-B2-C0001?
Load Forge's calculated alignment puts REDCATT DR-6-006-4R-B2-C0001 in a 6.9 liter vented enclosure tuned to 57.1 Hz, reaching an F3 cutoff of approximately 79.5 Hz.
Can REDCATT DR-6-006-4R-B2-C0001 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 8.6 liters with a Qtc of 1.018 (above Butterworth: Qtc cannot fall below Qts (0.72)), the system exhibits an F3 of 76.8 Hz.
What port dimensions should be used for REDCATT DR-6-006-4R-B2-C0001 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 43.5 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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