DELTA-15: 15″ Woofer
Recommended for professional audio as a mid-bass or vocal wedge in a sealed enclosure. Also suitable as a mid-bass or woofer in vented enclosures.
Click Here to Download 8 ohm PDF Spec Sheet
Click Here to Download 8 ohm PDF Cabinet Design
Click Here to Download 16 ohm PDF Spec Sheet
Click Here to Download 16 ohm PDF Cabinet Design
| 8 ohm Specification | |
| Nominal Basket Diameter | 15″, 381 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 800 W |
| Watts | 400 W |
| Resonance | 40 Hz |
| Usable Frequency Range | 48 Hz – 4 kHz |
| Sensitivity* | 100 dB |
| Magnet Weight | 56 oz. |
| Gap Height | 0.375″, 9.5 mm |
| Voice Coil Diameter | 2.5″, 64 mm |
| Thiele & Small Parameters | |
| Resonant Frequency (fs) | 40 Hz |
| DC Resistance (Re) | 6.3 Ω |
| Coil Inductance (Le) | 0.64m H |
| Mechanical Q (Qms) | 8.05 |
| Electromagnetic Q (Qes) | 0.57 |
| Total Q (Qts) | 0.53 |
| Compliance Equivalent Volume (Vas) | 270.7 liters / 9.56 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 233 cc |
| Mechanical Compliance of Suspension (Cms) | 0.26 mm/N |
| BL Product (BL) | 13.2 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 62 grams |
| Efficiency Bandwidth Product (EBP) | 70 |
| Maximum Linear Excursion (Xmax) | 2.7 mm |
| Surface Area of Cone (Sd) | 864.6 cm2 |
| Maximum Mechanical Limit (Xlim) | 11.1 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 37-42.5 liters / 1.3-1.5 cu.ft. |
| Vented | 82-161.4 liters / 2.9-5.7 cu.ft. |
| Driver Volume Displaced | 0.128 cu.ft. / 3.62 liters |
| Overall Diameter | 15.15″, 384.8 mm |
| Baffle Hole Diameter | 13.87″, 352.3 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25″, 6.4mm |
| Mounting Holes B.C.D. | 14.56″, 369.8mm |
| Depth | 6.05″, 153.7 mm |
| Net Weight | 12.3 lbs, 5.58 kg |
| Shipping Weight | 14.4 lbs, 6.53 kgs |
| Materials of Construction | |
| Coil Construction | Aluminum voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
| Specification | |
| Nominal Basket Diameter | 15″, 381 mm |
| Nominal Impedance* | 16 Ω |
| Power Rating* | |
| Program Power | 800 W |
| Watts | 400 W |
| Resonance | 45 Hz |
| Usable Frequency Range | 64 Hz – 4 kHz |
| Sensitivity* | 100 dB |
| Magnet Weight | 56 oz. |
| Gap Height | 0.375″, 9.5 mm |
| Voice Coil Diameter | 2.5″, 64 mm |
| Thiele & Small Parameters | |
| Resonant Frequency (fs) | 45 Hz |
| DC Resistance (Re) | 11.3 Ω |
| Coil Inductance (Le) | 1.35m H |
| Mechanical Q (Qms) | 6.54 |
| Electromagnetic Q (Qes) | 0.67 |
| Total Q (Qts) | 0.61 |
| Compliance Equivalent Volume (Vas) | 204 liters / 7.2 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 137 cc |
| Mechanical Compliance of Suspension (Cms) | 0.19 mm/N |
| BL Product (BL) | 17.6 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 64 grams |
| Efficiency Bandwidth Product (EBP) | 68 |
| Maximum Linear Excursion (Xmax) | 1.6 mm |
| Surface Area of Cone (Sd) | 856.3 cm2 |
| Maximum Mechanical Limit (Xlim) | 11.1 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 31-42.5 liters / 1.09-1.5 cu.ft. |
| Vented | 81.8-87.8 liters / 2.89-3.1 cu.ft. |
| Driver Volume Displaced | 0.128 cu.ft. / 3.62 liters |
| Overall Diameter | 15.15″, 384.8 mm |
| Baffle Hole Diameter | 13.87″, 352.3 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25″, 6.4mm |
| Mounting Holes B.C.D. | 14.56″, 369.8mm |
| Depth | 6.05″, 153.7 mm |
| Net Weight | 12.3 lbs, 5.58 kg |
| Shipping Weight | 14.3 lbs, 6.49 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
