DS18 PRO-NEO6SLIM
Best box: 3.6 L sealed · Fc 302.6 Hz · F3 232.8 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the DS18 PRO-NEO6SLIM does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Textbook Bass Reflex — not recommended (4.7 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 2.9 Liters |
| Tuning Frequency (Fb) | 181.9 Hz |
| F3 (-3 dB Cutoff) | 267.9 Hz |
| F6 / F10 Extension | 234.5 Hz / 191.7 Hz |
| Port Inner Diameter | Ø 10.0 cm |
| Port Physical Length | 17.4 cm |
| First Pipe Resonance | 989.0 Hz |
| Estimated MOL @ F3 | 121.9 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.15 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.626; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 3.6 Liters |
| System Q (Qtc) | 1.626 (above Butterworth: Qtc cannot fall below Qts (1.15)) |
| System Resonance (Fc) | 302.6 Hz |
| F3 (-3 dB Cutoff) | 232.8 Hz |
| F6 / F10 Extension | 202.4 Hz / 169.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 214.0 Hz |
| Total Q (Qts) | 1.15 |
| Electrical Q (Qes) | 1.376 |
| Mechanical Q (Qms) | 7.01 |
| Equivalent Volume (Vas) | 3.6 Liters |
| Diaphragm Area (Sd) | 143.1 cm² |
| DC Resistance (Re) | 3.5 Ω |
| Efficiency Bandwidth Product (EBP) | 155.6 |
| Linear Excursion (Xmax) | 8.2 mm |
| Thermal Power (Pe) | 200.0 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 DS18 PRO-NEO6SLIM?
A simple ported box is not recommended for DS18 PRO-NEO6SLIM: the textbook alignment (2.9 liters tuned to 181.9 Hz) needs a 17.4 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 DS18 PRO-NEO6SLIM be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 3.6 liters with a Qtc of 1.626 (above Butterworth: Qtc cannot fall below Qts (1.15)), the system exhibits an F3 of 232.8 Hz.
What port dimensions should be used for DS18 PRO-NEO6SLIM to avoid port chuffing?
A straight 10.0 cm port would need 17.4 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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