Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm
Best box: 20.4 L bass reflex tuned to 44.9 Hz · F3 42.6 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm 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) | 20.4 Liters |
| Tuning Frequency (Fb) | 44.9 Hz |
| F3 (-3 dB Cutoff) | 42.6 Hz |
| F6 / F10 Extension | 38.0 Hz / 33.7 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 10.7 cm |
| First Pipe Resonance | 1602.0 Hz |
| Estimated MOL @ F3 | 100.8 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 9.0 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 80.5 Hz |
| F3 (-3 dB Cutoff) | 81.9 Hz |
| F6 / F10 Extension | 62.0 Hz / 46.9 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 49.0 Hz |
| Total Q (Qts) | 0.42 |
| Electrical Q (Qes) | 0.479 |
| Mechanical Q (Qms) | 3.43 |
| Equivalent Volume (Vas) | 16.4 Liters |
| Diaphragm Area (Sd) | 130.2 cm² |
| DC Resistance (Re) | 4.4 Ω |
| Efficiency Bandwidth Product (EBP) | 102.4 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | 40.0 W |
| Nominal Diameter | 6.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm?
Load Forge's calculated alignment puts Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm in a 20.4 liter vented enclosure tuned to 44.9 Hz, reaching an F3 cutoff of approximately 42.6 Hz.
Can Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 9.0 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 81.9 Hz.
What port dimensions should be used for Dayton Audio GF180-4 6-1/2" Glass Fiber Cone Woofer 4 Ohm to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 10.7 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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