Eminence GA-SC64
Best box: 67.4 L bass reflex tuned to 61.6 Hz · F3 68.7 Hz
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Comparable 12.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Eminence GA-SC64 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: 1.23 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) | 67.4 Liters |
| Tuning Frequency (Fb) | 61.6 Hz |
| F3 (-3 dB Cutoff) | 68.7 Hz |
| F6 / F10 Extension | 54.0 Hz / 46.5 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 2.1 cm |
| First Pipe Resonance | 8370.0 Hz |
| Estimated MOL @ F3 | 111.7 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 92.5 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 97.0 Hz |
| F3 (-3 dB Cutoff) | 98.5 Hz |
| F6 / F10 Extension | 74.5 Hz / 56.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 88.0 Hz |
| Total Q (Qts) | 0.58 |
| Electrical Q (Qes) | 0.601 |
| Mechanical Q (Qms) | 16.82 |
| Equivalent Volume (Vas) | 45.0 Liters |
| Diaphragm Area (Sd) | 519.5 cm² |
| DC Resistance (Re) | 7.63 Ω |
| Efficiency Bandwidth Product (EBP) | 146.5 |
| Linear Excursion (Xmax) | 1.2 mm |
| Thermal Power (Pe) | 40.0 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 Eminence GA-SC64?
Load Forge's calculated alignment puts Eminence GA-SC64 in a 67.4 liter vented enclosure tuned to 61.6 Hz, reaching an F3 cutoff of approximately 68.7 Hz.
Can Eminence GA-SC64 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 92.5 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 98.5 Hz.
What port dimensions should be used for Eminence GA-SC64 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 10.0 cm with a length of 2.1 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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