Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker
Best box: 23.4 L bass reflex tuned to 63.5 Hz · F3 129.5 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker 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
- The textbook alignment (11.7 L at 105.8 Hz) would need a 3.5 cm port; the recommendation is retuned to 23.4 L at 63.5 Hz so the port can be built.
- 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) | 23.4 Liters |
| Tuning Frequency (Fb) | 63.5 Hz |
| F3 (-3 dB Cutoff) | 129.5 Hz |
| F6 / F10 Extension | 115.1 Hz / 96.5 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 2.7 cm |
| First Pipe Resonance | 6460.0 Hz |
| Estimated MOL @ F3 | 110.2 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.925 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 2.722; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 14.6 Liters |
| System Q (Qtc) | 2.722 (above Butterworth: Qtc cannot fall below Qts (1.93)) |
| System Resonance (Fc) | 176.1 Hz |
| F3 (-3 dB Cutoff) | 141.9 Hz |
| F6 / F10 Extension | 128.6 Hz / 112.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 124.5 Hz |
| Total Q (Qts) | 1.925 |
| Electrical Q (Qes) | 2.753 |
| Mechanical Q (Qms) | 6.4 |
| Equivalent Volume (Vas) | 14.6 Liters |
| Diaphragm Area (Sd) | 363.1 cm² |
| DC Resistance (Re) | 7.17 Ω |
| Efficiency Bandwidth Product (EBP) | 45.2 |
| Linear Excursion (Xmax) | 1.5 mm |
| Thermal Power (Pe) | 25.0 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 Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker?
Load Forge's calculated alignment puts Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker in a 23.4 liter vented enclosure tuned to 63.5 Hz, reaching an F3 cutoff of approximately 129.5 Hz.
Can Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 14.6 liters with a Qtc of 2.722 (above Butterworth: Qtc cannot fall below Qts (1.93)), the system exhibits an F3 of 141.9 Hz.
What port dimensions should be used for Coast Buyouts CES 11-20-0010 10" Midrange/Guitar Speaker to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 2.7 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
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