Scan-Speak 15M/4531K00
Best box: 5.3 L bass reflex tuned to 55.2 Hz · F3 66.3 Hz
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Comparable 5.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Scan-Speak 15M/4531K00 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
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 5.3 Liters |
| Tuning Frequency (Fb) | 55.2 Hz |
| F3 (-3 dB Cutoff) | 66.3 Hz |
| F6 / F10 Extension | 56.2 Hz / 47.3 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 32.9 cm |
| First Pipe Resonance | 523.0 Hz |
| Estimated MOL @ F3 | 101.4 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 2.8 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 105.3 Hz |
| F3 (-3 dB Cutoff) | 97.6 Hz |
| F6 / F10 Extension | 76.8 Hz / 59.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 35.0 Hz |
| Total Q (Qts) | 0.23 |
| Electrical Q (Qes) | 0.242 |
| Mechanical Q (Qms) | 4.8 |
| Equivalent Volume (Vas) | 23.8 Liters |
| Diaphragm Area (Sd) | 95.0 cm² |
| DC Resistance (Re) | 3.5 Ω |
| Efficiency Bandwidth Product (EBP) | 144.9 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 50.0 W |
| Nominal Diameter | 5.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Scan-Speak 15M/4531K00?
Load Forge's calculated alignment puts Scan-Speak 15M/4531K00 in a 5.3 liter vented enclosure tuned to 55.2 Hz, reaching an F3 cutoff of approximately 66.3 Hz.
Can Scan-Speak 15M/4531K00 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 2.8 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 97.6 Hz.
What port dimensions should be used for Scan-Speak 15M/4531K00 to avoid port chuffing?
Xmax is not published for Scan-Speak 15M/4531K00, so the port is an empirical estimate: a 5.0 cm diameter with a length of 32.9 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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