Celestion CF1025C
Best box: 12.8 L bass reflex tuned to 76.1 Hz · F3 82.1 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Celestion CF1025C 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) | 12.8 Liters |
| Tuning Frequency (Fb) | 76.1 Hz |
| F3 (-3 dB Cutoff) | 82.1 Hz |
| F6 / F10 Extension | 71.1 Hz / 61.3 Hz |
| Port Inner Diameter | Ø 7.5 cm |
| Port Physical Length | 12.5 cm |
| First Pipe Resonance | 1376.0 Hz |
| Estimated MOL @ F3 | 115.8 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 6.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 140.1 Hz |
| F3 (-3 dB Cutoff) | 131.3 Hz |
| F6 / F10 Extension | 101.3 Hz / 76.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 54.8 Hz |
| Total Q (Qts) | 0.265 |
| Electrical Q (Qes) | 0.299 |
| Mechanical Q (Qms) | 2.34 |
| Equivalent Volume (Vas) | 38.6 Liters |
| Diaphragm Area (Sd) | 346.4 cm² |
| DC Resistance (Re) | 5.15 Ω |
| Efficiency Bandwidth Product (EBP) | 183.4 |
| Linear Excursion (Xmax) | 4.2 mm |
| Thermal Power (Pe) | 300.0 W |
| Nominal Diameter | 10.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Celestion CF1025C?
Load Forge's calculated alignment puts Celestion CF1025C in a 12.8 liter vented enclosure tuned to 76.1 Hz, reaching an F3 cutoff of approximately 82.1 Hz.
Can Celestion CF1025C be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 6.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 131.3 Hz.
What port dimensions should be used for Celestion CF1025C to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 7.5 cm with a length of 12.5 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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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