REDCATT DR-12-047-4R-B2-C0001
Best box: 59.8 L sealed · Fc 42.4 Hz · F3 36.0 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the REDCATT DR-12-047-4R-B2-C0001 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Textbook Bass Reflex — not recommended (5.0 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 47.8 Liters |
| Tuning Frequency (Fb) | 25.5 Hz |
| F3 (-3 dB Cutoff) | 40.3 Hz |
| F6 / F10 Extension | 34.9 Hz / 28.3 Hz |
| Port Inner Diameter | Ø 7.5 cm |
| Port Physical Length | 37.2 cm |
| First Pipe Resonance | 462.0 Hz |
| Estimated MOL @ F3 | 113.4 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.08 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.527; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 59.8 Liters |
| System Q (Qtc) | 1.527 (above Butterworth: Qtc cannot fall below Qts (1.08)) |
| System Resonance (Fc) | 42.4 Hz |
| F3 (-3 dB Cutoff) | 36.0 Hz |
| F6 / F10 Extension | 31.1 Hz / 25.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 30.0 Hz |
| Total Q (Qts) | 1.08 |
| Electrical Q (Qes) | 1.158 |
| Mechanical Q (Qms) | 16.0 |
| Equivalent Volume (Vas) | 59.8 Liters |
| Diaphragm Area (Sd) | 506.7 cm² |
| DC Resistance (Re) | 3.6 Ω |
| Efficiency Bandwidth Product (EBP) | 25.9 |
| Linear Excursion (Xmax) | 9.2 mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 12.0" |
| 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-12-047-4R-B2-C0001?
A simple ported box is not recommended for REDCATT DR-12-047-4R-B2-C0001: the textbook alignment (47.8 liters tuned to 25.5 Hz) needs a 37.2 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can REDCATT DR-12-047-4R-B2-C0001 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 59.8 liters with a Qtc of 1.527 (above Butterworth: Qtc cannot fall below Qts (1.08)), the system exhibits an F3 of 36.0 Hz.
What port dimensions should be used for REDCATT DR-12-047-4R-B2-C0001 to avoid port chuffing?
A straight 7.5 cm port would need 37.2 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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