Scan-Speak Illuminator 30W/4558T00
Best box: 95.8 L bass reflex tuned to 23.8 Hz · F3 24.2 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Scan-Speak Illuminator 30W/4558T00 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 95.8 Liters |
| Tuning Frequency (Fb) | 23.8 Hz |
| F3 (-3 dB Cutoff) | 24.2 Hz |
| F6 / F10 Extension | 21.2 Hz / 18.5 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 36.2 cm |
| First Pipe Resonance | 475.0 Hz |
| Estimated MOL @ F3 | 108.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 42.2 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 43.5 Hz |
| F3 (-3 dB Cutoff) | 45.0 Hz |
| F6 / F10 Extension | 33.8 Hz / 25.4 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 22.0 Hz |
| Total Q (Qts) | 0.35 |
| Electrical Q (Qes) | 0.384 |
| Mechanical Q (Qms) | 4.0 |
| Equivalent Volume (Vas) | 130.0 Liters |
| Diaphragm Area (Sd) | 480.0 cm² |
| DC Resistance (Re) | 7.4 Ω |
| Efficiency Bandwidth Product (EBP) | 57.4 |
| Linear Excursion (Xmax) | 13.0 mm |
| Thermal Power (Pe) | 300.0 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 Scan-Speak Illuminator 30W/4558T00?
Load Forge's calculated alignment puts Scan-Speak Illuminator 30W/4558T00 in a 95.8 liter vented enclosure tuned to 23.8 Hz, reaching an F3 cutoff of approximately 24.2 Hz.
Can Scan-Speak Illuminator 30W/4558T00 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 42.2 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 45.0 Hz.
What port dimensions should be used for Scan-Speak Illuminator 30W/4558T00 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 36.2 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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