DeltaA Larger Vented Cab.; Low Pwr Full Range PA Cab. By McJerry, Eminence Speaker LLC Displacement Limited to 5 Watts; for best results use a steep high pass filter set to 4 Hz or higher to protect woofer from overexcursion. Box Properties --Description-- Name: Type: Vented Box Shape: Prism, square (optimum) --Box Parameters-- Vb = 2.75 cu.ft V(total) = 2.89 cu.ft Fb = 55 Hz QL = 7 F3 = 1.87 Hz Fill = minimal --Vents-- No. of Vents = 2 Vent shape = round Vent ends = one flush Dv = 4 in Lv = 3.7 in Driver Properties --Description-- Name: Delta- (8 ohm) Type: Standard one-way driver Company: Eminence Speaker LLC Comment: Revised NOV 25 Piston: Paper cone. Suspension: Cloth surround. Dust Cap: Solid composition paper dust cap. Frame: Pressed steel basket. Voice Coil: 2.5 inch (3.5 mm) AL Wire. Kapton former. Magnet: 5 oz ferrite magnet. --Configuration-- No. of Drivers = 1 --Mechanical Parameters-- Fs = 55 Hz Qms = 5.27 Vas = 81.3 liters Cms =.21 mm/n Mms = 39 g Rms = 2.55 kg/s Xmax = 2.4 mm Xmech = 9.9 mm P-Dia = 257.8 mm Sd = 519.5 sq.cm P-Vd =.5 liters --Electrical Parameters-- Qes =.4 Re =.3 ohms Le =.74 mh Z = 8 ohms BL = 13.5 Tm Pe = 4 watts --Electromech. Parameters-- Qts =.43 no = 2.835 % 1-W SPL = 9.7 2.83-V SPL = 97.71 File: DeltaALargerVenteox5Watts.bb
Page Two -- DeltaALargerVenteox5Watts.bb Normalized Amplitude Response (-SPL/Hz) - - -18-24 -3-3 Custom Amplitude Response (-SPL/Hz at 1 m) with 5 watts 1 115 19 13 97 91 85 79 Maximum Acoustic Power (-SPL/Hz at 1 m) 9 3 117 111 15 99 93 87
Page Three -- DeltaALargerVenteox5Watts.bb Maximum Electric Input Power (W/Hz) watts 2 1 2 1 2 Cone Displacement (mm/hz) with 5 watts mm 1 14 1 8 4 2 Vent Air Velocity (m/sec/hz) with 5 watts m/s 48 42 3 3 24 18
Page Four -- DeltaALargerVenteox5Watts.bb System Impedance (ohms/hz) ohms 8 7 5 4 3 2 1 Phase Response (deg/hz) deg 9-9 ±18 9-9 ±18 msec 24 Group Delay (msec/hz) 2 1 8 4-4 -8
DeltaA Med Vented Cab.; Med Pwr Two Way Sat Type Cab. By McJerry, Eminence Speaker LLC Displacement limited to 1 Watts; use a steep high pass filter set to 7 Hz or higher. Box Properties --Description-- Name: Type: Vented Box Shape: Prism, square (optimum) --Box Parameters-- Vb = 1.35 cu.ft V(total) = 1.453 cu.ft Fb = 7 Hz QL = 7 F3 = 78.85 Hz Fill = minimal --Vents-- No. of Vents = 2 Vent shape = round Vent ends = one flush Dv = 3 in Lv = 2.423 in Driver Properties --Description-- Name: Delta- (8 ohm) Type: Standard one-way driver Company: Eminence Speaker LLC Comment: Revised NOV 25 Piston: Paper cone. Suspension: Cloth surround. Dust Cap: Solid composition paper dust cap. Frame: Pressed steel basket. Voice Coil: 2.5 inch (3.5 mm) AL Wire. Kapton former. Magnet: 5 oz ferrite magnet. --Configuration-- No. of Drivers = 1 --Mechanical Parameters-- Fs = 55 Hz Qms = 5.27 Vas = 81.3 liters Cms =.21 mm/n Mms = 39 g Rms = 2.55 kg/s Xmax = 2.4 mm Xmech = 9.9 mm P-Dia = 257.8 mm Sd = 519.5 sq.cm P-Vd =.5 liters --Electrical Parameters-- Qes =.4 Re =.3 ohms Le =.74 mh Z = 8 ohms BL = 13.5 Tm Pe = 4 watts --Electromech. Parameters-- Qts =.43 no = 2.835 % 1-W SPL = 9.7 2.83-V SPL = 97.71 File: DeltaAMedVented1Watts.bb
Page Two -- DeltaAMedVented1Watts.bb Normalized Amplitude Response (-SPL/Hz) - - -18-24 -3-3 Custom Amplitude Response (-SPL/Hz at 1 m) with 1 watts 4 118 1 1 1 94 88 82 Maximum Acoustic Power (-SPL/Hz at 1 m) 9 3 117 111 15 99 93 87
Page Three -- DeltaAMedVented1Watts.bb Maximum Electric Input Power (W/Hz) watts 2 1 2 1 2 Cone Displacement (mm/hz) with 1 watts mm 1 14 1 8 4 2 Vent Air Velocity (m/sec/hz) with 1 watts m/s 48 42 3 3 24 18
Page Four -- DeltaAMedVented1Watts.bb System Impedance (ohms/hz) ohms 8 7 5 4 3 2 1 Phase Response (deg/hz) deg 9-9 ±18 9-9 ±18 msec 24 Group Delay (msec/hz) 2 1 8 4-4 -8
DeltaA Small Vented Cab.; Med Pwr Mid/High Box By McJerry, Eminence Speaker LLC Displacement Limited to 2 Watts; use a steep high pass filter set to 1 Hz or higher. Great for Med power, very small Sat type cabinet. Box Properties --Description-- Name: Type: Vented Box Shape: Prism, square (optimum) --Box Parameters-- Vb =.75 cu.ft V(total) =.837 cu.ft Fb = 11 Hz QL = 7 F3 = 1.2 Hz Fill = minimal --Vents-- No. of Vents = 2 Vent shape = round Vent ends = one flush Dv = 2.971 in Lv =.75 in Driver Properties --Description-- Name: Delta- (8 ohm) Type: Standard one-way driver Company: Eminence Speaker LLC Comment: Revised NOV 25 Piston: Paper cone. Suspension: Cloth surround. Dust Cap: Solid composition paper dust cap. Frame: Pressed steel basket. Voice Coil: 2.5 inch (3.5 mm) AL Wire. Kapton former. Magnet: 5 oz ferrite magnet. --Configuration-- No. of Drivers = 1 --Mechanical Parameters-- Fs = 55 Hz Qms = 5.27 Vas = 81.3 liters Cms =.21 mm/n Mms = 39 g Rms = 2.55 kg/s Xmax = 2.4 mm Xmech = 9.9 mm P-Dia = 257.8 mm Sd = 519.5 sq.cm P-Vd =.5 liters --Electrical Parameters-- Qes =.4 Re =.3 ohms Le =.74 mh Z = 8 ohms BL = 13.5 Tm Pe = 4 watts --Electromech. Parameters-- Qts =.43 no = 2.835 % 1-W SPL = 9.7 2.83-V SPL = 97.71 File: DeltaASmallVented2Watts.bb
Page Two -- DeltaASmallVented2Watts.bb Normalized Amplitude Response (-SPL/Hz) - - -18-24 -3-3 Custom Amplitude Response (-SPL/Hz at 1 m) with 2 watts 7 1 115 19 13 97 91 85 Maximum Acoustic Power (-SPL/Hz at 1 m) 9 3 117 111 15 99 93 87
Page Three -- DeltaASmallVented2Watts.bb Maximum Electric Input Power (W/Hz) watts 2 1 2 1 2 Cone Displacement (mm/hz) with 2 watts mm 1 14 1 8 4 2 Vent Air Velocity (m/sec/hz) with 2 watts m/s 48 42 3 3 24 18
Page Four -- DeltaASmallVented2Watts.bb System Impedance (ohms/hz) ohms 8 7 5 4 3 2 1 Phase Response (deg/hz) deg 9-9 ±18 9-9 ±18 msec 24 Group Delay (msec/hz) 2 1 8 4-4 -8