Skar Audio DNR-15 D2
Best box: 11.1 L sealed · Fc 58.8 Hz · F3 61.0 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Skar Audio DNR-15 D2 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 942.4 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) | 8.9 Liters |
| Tuning Frequency (Fb) | 35.4 Hz |
| F3 (-3 dB Cutoff) | 66.8 Hz |
| F6 / F10 Extension | 57.9 Hz / 47.3 Hz |
| Port Inner Diameter | Ø 21.3 cm |
| Port Physical Length | 942.4 cm |
| First Pipe Resonance | 18.0 Hz |
| Estimated MOL @ F3 | 125.1 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.91 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.287; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 11.1 Liters |
| System Q (Qtc) | 1.287 (above Butterworth: Qtc cannot fall below Qts (0.91)) |
| System Resonance (Fc) | 58.8 Hz |
| F3 (-3 dB Cutoff) | 61.0 Hz |
| F6 / F10 Extension | 52.9 Hz / 44.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 41.6 Hz |
| Total Q (Qts) | 0.91 |
| Electrical Q (Qes) | 1.005 |
| Mechanical Q (Qms) | 9.66 |
| Equivalent Volume (Vas) | 11.1 Liters |
| Diaphragm Area (Sd) | 754.7 cm² |
| DC Resistance (Re) | 3.8 Ω |
| Efficiency Bandwidth Product (EBP) | 41.4 |
| Linear Excursion (Xmax) | 36.4 mm |
| Thermal Power (Pe) | 10000.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Skar Audio DNR-15 D2?
A simple ported box is not recommended for Skar Audio DNR-15 D2: the textbook alignment (8.9 liters tuned to 35.4 Hz) needs a 942.4 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 Skar Audio DNR-15 D2 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 11.1 liters with a Qtc of 1.287 (above Butterworth: Qtc cannot fall below Qts (0.91)), the system exhibits an F3 of 61.0 Hz.
What port dimensions should be used for Skar Audio DNR-15 D2 to avoid port chuffing?
A straight 21.3 cm port would need 942.4 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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