DELTA-12LF: 12″ Woofer
Low frequency woofer for pro audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable as a woofer in vented, bass guitar or PA enclosures in vented, bass guitar or PA enclosures.
Available in 4 or 8 ohms
Click Here to Download 4 ohm PDF Spec Sheet
Click Here to Download 4 ohm PDF Cabinet Design
Click Here to Download 8 ohm PDF Spec Sheet
Click Here to Download 8 ohm PDF Cabinet Design
| 4 ohm Specification | |
| Nominal Basket Diameter | 12″, 305 mm |
| Nominal Impedance* | 4 Ω |
| Power Rating* | |
| Program Power | 1000 W |
| Watts | 500 W |
| Resonance | 52 Hz |
| Usable Frequency Range | 45 Hz – 2.3 kHz |
| Sensitivity* | 93.1 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) | 52 Hz |
| DC Resistance (Re) | 3.2 Ω |
| Coil Inductance (Le) | 0.94m H |
| Mechanical Q (Qms) | 8.21 |
| Electromagnetic Q (Qes) | 0.47 |
| Total Q (Qts) | 0.44 |
| Compliance Equivalent Volume (Vas) | 63.7 liters / 2.25 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 243 cc |
| Mechanical Compliance of Suspension (Cms) | 0.17 mm/N |
| BL Product (BL) | 10.9 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 53 grams |
| Efficiency Bandwidth Product (EBP) | 111 |
| Maximum Linear Excursion (Xmax) | 4.8 mm |
| Surface Area of Cone (Sd) | 506.7 cm2 |
| Maximum Mechanical Limit (Xlim) | 13.5 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 21-74 liters / 0.7-2.6 cu.ft. |
| Vented | 28-110 liters / 1-3.9 cu.ft. |
| Driver Volume Displaced | 0.079 cu.ft. / 2.25 liters |
| Overall Diameter | 12.03″, 305.6 mm |
| Baffle Hole Diameter | 11.07″, 281.2 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25″, 6.4mm |
| Mounting Holes B.C.D. | 11.59″, 294.4mm |
| Depth | 5.35″, 135.9 mm |
| Net Weight | 11.8 lbs, 5.35 kg |
| Shipping Weight | 14 lbs, 6.35 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Kapton former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented and extended core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Treated paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
| 8 ohm Specification | |
| Nominal Basket Diameter | 12″, 305 mm |
| Nominal Impedance* | 8 Ω |
| Power Rating* | |
| Program Power | 1000 W |
| Watts | 500 W |
| Resonance | 51 Hz |
| Usable Frequency Range | 44 Hz – 3 kHz |
| Sensitivity* | 94.6 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) | 51 Hz |
| DC Resistance (Re) | 6.06 Ω |
| Coil Inductance (Le) | 1.45m H |
| Mechanical Q (Qms) | 7.28 |
| Electromagnetic Q (Qes) | 0.51 |
| Total Q (Qts) | 0.47 |
| Compliance Equivalent Volume (Vas) | 67.9 liters / 2.4 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) | 243 cc |
| Mechanical Compliance of Suspension (Cms) | 0.19 mm/N |
| BL Product (BL) | 14.1 T-M |
| Diaphragm Mass Inc. Airload (MMs) | 51 grams |
| Efficiency Bandwidth Product (EBP) | 100 |
| Maximum Linear Excursion (Xmax) | 4.8 mm |
| Surface Area of Cone (Sd) | 506.7 cm2 |
| Maximum Mechanical Limit (Xlim) | 13.5 mm |
| Mounting Information | |
| Recommended Enclosure Volume | |
| Sealed | 19.8-28 liters / 0.7-1 cu.ft. |
| Vented | 25.5-102 liters / 0.9-3.6 cu.ft. |
| Driver Volume Displaced | 0.079 cu.ft. / 2.25 liters |
| Overall Diameter | 12.03″, 305.6 mm |
| Baffle Hole Diameter | 11.07″, 281.2 mm |
| Front Sealing Gasket | Yes |
| Rear Sealing Gasket | Yes |
| Mounting Holes Diameter | 0.25″, 6.4mm |
| Mounting Holes B.C.D. | 11.59″, 294.4mm |
| Depth | 5.35″, 135.9 mm |
| Net Weight | 11.8 lbs, 5.35 kg |
| Shipping Weight | 14 lbs, 6.35 kgs |
| Materials of Construction | |
| Coil Construction | Copper voice coil |
| Coil Former | Polyimide former |
| Magnet Composition | Ferrite magnet |
| Core Details | Vented and extended core |
| Basket Materials | Pressed steel basket |
| Cone Composition | Paper cone |
| Cone Edge Composition | Cloth cone edge |
| Dust Cap Composition | Solid composition paper dust cap |
