Scan-Speak 15M/4624G00
Best box: 4.9 L bass reflex tuned to 89.8 Hz · F3 83.6 Hz
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Comparable 5.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Scan-Speak 15M/4624G00 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
- Limited linear excursion (Xmax: 1.5 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) | 4.9 Liters |
| Tuning Frequency (Fb) | 89.8 Hz |
| F3 (-3 dB Cutoff) | 83.6 Hz |
| F6 / F10 Extension | 75.5 Hz / 67.4 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 11.3 cm |
| First Pipe Resonance | 1519.0 Hz |
| Estimated MOL @ F3 | 103.5 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 2.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 159.8 Hz |
| F3 (-3 dB Cutoff) | 166.0 Hz |
| F6 / F10 Extension | 123.8 Hz / 92.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 100.0 Hz |
| Total Q (Qts) | 0.43 |
| Electrical Q (Qes) | 0.466 |
| Mechanical Q (Qms) | 5.62 |
| Equivalent Volume (Vas) | 3.7 Liters |
| Diaphragm Area (Sd) | 80.0 cm² |
| DC Resistance (Re) | 3.2 Ω |
| Efficiency Bandwidth Product (EBP) | 214.8 |
| Linear Excursion (Xmax) | 1.5 mm |
| Thermal Power (Pe) | 75.0 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/4624G00?
Load Forge's calculated alignment puts Scan-Speak 15M/4624G00 in a 4.9 liter vented enclosure tuned to 89.8 Hz, reaching an F3 cutoff of approximately 83.6 Hz.
Can Scan-Speak 15M/4624G00 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 2.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 166.0 Hz.
What port dimensions should be used for Scan-Speak 15M/4624G00 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 11.3 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
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