Celestion CN0515M
Best box: 0.12 L sealed · Fc 475.5 Hz · F3 447.9 Hz
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Comparable 5.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Celestion CN0515M 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: 3.25 mm); set a high-pass subsonic filter at 25–30 Hz when driven with high power.
Textbook Bass Reflex — not recommended (13.4 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 253.1 Hz |
| F3 (-3 dB Cutoff) | 237.0 Hz |
| F6 / F10 Extension | 224.3 Hz / 207.9 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 6.5 cm |
| First Pipe Resonance | 2660.0 Hz |
| Estimated MOL @ F3 | 114.9 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 0.12 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 475.5 Hz |
| F3 (-3 dB Cutoff) | 447.9 Hz |
| F6 / F10 Extension | 344.7 Hz / 261.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 189.2 Hz |
| Total Q (Qts) | 0.276 |
| Electrical Q (Qes) | 0.337 |
| Mechanical Q (Qms) | 1.53 |
| Equivalent Volume (Vas) | 0.7 Liters |
| Diaphragm Area (Sd) | 78.5 cm² |
| DC Resistance (Re) | 11.47 Ω |
| Efficiency Bandwidth Product (EBP) | 562.2 |
| Linear Excursion (Xmax) | 3.2 mm |
| Thermal Power (Pe) | 100.0 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 Celestion CN0515M?
A simple ported box is not recommended for Celestion CN0515M: the textbook alignment (1.5 liters tuned to 253.1 Hz) needs a 6.5 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 Celestion CN0515M be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.12 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 447.9 Hz.
What port dimensions should be used for Celestion CN0515M to avoid port chuffing?
A straight 6.8 cm port would need 6.5 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
Shareable Acoustic Card for Forums & Social Media
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