SEAS P14RC4YDC
Best box: 1.5 L bass reflex tuned to 93.3 Hz · F3 108.2 Hz
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Comparable 5.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the SEAS P14RC4YDC 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 (1.5 L at 81.1 Hz) would need a 56.1 cm port; the recommendation is retuned to 1.5 L at 93.3 Hz so the port can be built.
- Limited linear excursion (Xmax: 3.0 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 93.3 Hz |
| F3 (-3 dB Cutoff) | 108.2 Hz |
| F6 / F10 Extension | 92.9 Hz / 79.4 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 41.5 cm |
| First Pipe Resonance | 414.0 Hz |
| Estimated MOL @ F3 | 111.3 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 0.9 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 161.8 Hz |
| F3 (-3 dB Cutoff) | 140.6 Hz |
| F6 / F10 Extension | 110.6 Hz / 84.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 35.0 Hz |
| Total Q (Qts) | 0.15 |
| Electrical Q (Qes) | 0.182 |
| Mechanical Q (Qms) | 0.85 |
| Equivalent Volume (Vas) | 19.1 Liters |
| Diaphragm Area (Sd) | 80.0 cm² |
| DC Resistance (Re) | 2.6 Ω |
| Efficiency Bandwidth Product (EBP) | 192.2 |
| Linear Excursion (Xmax) | 3.0 mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 5.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for SEAS P14RC4YDC?
Load Forge's calculated alignment puts SEAS P14RC4YDC in a 1.5 liter vented enclosure tuned to 93.3 Hz, reaching an F3 cutoff of approximately 108.2 Hz.
Can SEAS P14RC4YDC be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.9 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 140.6 Hz.
What port dimensions should be used for SEAS P14RC4YDC to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 41.5 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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