DB Drive WDX6.5G1.4
Best box: 2.7 L sealed · Fc 83.3 Hz · F3 64.5 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the DB Drive WDX6.5G1.4 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
- Straight vent would be 192.3 cm long: not physically buildable as a simple tube. Use a passive radiator, a folded slot port or model a 3D folded duct in Load Forge Studio.
Textbook Bass Reflex — not recommended
PORT NOT BUILDABLE| Net Box Volume (Vb) | 2.2 Liters |
| Tuning Frequency (Fb) | 50.1 Hz |
| F3 (-3 dB Cutoff) | 73.4 Hz |
| F6 / F10 Extension | 63.9 Hz / 51.8 Hz |
| Port Inner Diameter | Ø 6.8 cm |
| Port Physical Length | 192.3 cm |
| First Pipe Resonance | 89.0 Hz |
| Estimated MOL @ F3 | 104.8 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.684 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 0.967; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 2.7 Liters |
| System Q (Qtc) | 0.967 (above Butterworth) |
| System Resonance (Fc) | 83.3 Hz |
| F3 (-3 dB Cutoff) | 64.5 Hz |
| F6 / F10 Extension | 55.9 Hz / 46.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 58.9 Hz |
| Total Q (Qts) | 0.684 |
| Electrical Q (Qes) | 0.822 |
| Mechanical Q (Qms) | 4.07 |
| Equivalent Volume (Vas) | 2.7 Liters |
| Diaphragm Area (Sd) | 132.0 cm² |
| DC Resistance (Re) | 3.2 Ω |
| Efficiency Bandwidth Product (EBP) | 71.6 |
| Linear Excursion (Xmax) | 15.0 mm |
| Thermal Power (Pe) | 300.0 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 DB Drive WDX6.5G1.4?
A simple ported box is not recommended for DB Drive WDX6.5G1.4: the textbook alignment (2.2 liters tuned to 50.1 Hz) needs a 192.3 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 DB Drive WDX6.5G1.4 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 2.7 liters with a Qtc of 0.967 (above Butterworth), the system exhibits an F3 of 64.5 Hz.
What port dimensions should be used for DB Drive WDX6.5G1.4 to avoid port chuffing?
A straight 6.8 cm port would need 192.3 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
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