03-02-2009, 08:54
salve, sto cercando di migliorare il mio impianto da dj formato da 2 casse da 600watt RMS l'una doppio cono da 38", medi a tromba e 2 piezo l'una...
Qualche tempo fa acquistai un subwoofer da 600 watt RMS con cono da 18" ma non spinge molto, Ho letto che sviluppa 99db max sensivity, quindi credo che sa il valore massimo che il woofer emette!
Ora vorrei cambiare solo il woofer e girando per internet ne ho trovati alcuni... I valori a cui mi sono rifatto sono stati i watt RMS e i db 1w\1m...
Ora sono un po indeciso:
Quale tra questi 2 mi consigliate? E Perchè?
1) Eminence Sigma Pro 18 A-2
Nominal Basket Diameter 18" / 457.2mm
Impedance 8 ohms
RMS Power Rating 650 Watts
Program Power Handling 1,300 Watts
Frequency Response 41Hz - 2.4kHz
Sensitivity (1W/1m) 99dB
Voice Coil Diameter 3" / 76.2mm
Max. Crossover Frequency 2.5kHz
Rec. Enclosure Volume(Vented) 3.3-7.5cu. ft./92-212 Liters
Mounting Information
Overall Diameter 18" / 457.2mm
Bolt Circle Diameter 17.25" / 438.2mm
Baffle Cutout Diameter 16.625" / 422.3mm
No. Of Mounting Holes 8
Mounting Hole Diameter 0.275" / 7mm
Overall Depth 8.15" / 207mm
Magnet Weight 120 oz.
Shipping Weight 28.1 lbs. / 12.8kg.
Thiele-Small Parameters
Resonant Frequency (fs) 28 Hz
Impedance (Re) 6.29 ohms
Coil Inductance (Le) 1.9mH
Electromagnetic Q (Qes) .3
Mechanical Q (Qms) 8.28
Total Q (Qts) .29
Compliance Equivalent Vol. (Vas) 441.2 Liters/15.58cu. ft.
Voice Coil Overhang (Xmax) 6.1mm
BL Factor (BL) 22.1 T-M
Surface Area of Cone (Sd) .1140 m2
2)GBS 2618
* Magnet Weight: 125 oz (ca. 2,94 kg)
* Diaphram Mass inc. Airload (Mms): 142 grams
* Nominal Impedance: 8 ohm
* Mechanical Q (Qms): 8,14
* Reproduction Frequency Response: FS-2.5 kHz
* Total Q (Qts): 0.26
* Power RMS: 1000 W
* max. Power: 1800 W
* Sensitivity/SPL: 99 dB ±2 dB
* Equivalent Diaphram Radius: 100 mm (4")
* Electromagnetic Q (Qes): 0.28
* Equivalent Volume (Vas): 205 liters
* Maximum Linear Excursion (Xmax): 8.0 mm
* Minimum Frequency Response: 30 Hz
* Resonant Frequency (fs): 38 Hz
* DC Resistance (Re): 5.6 ohm
Vorrei metterli in una cassa reflex da 675 x 545 x 455 mm
Grazie in anticipo
Qualche tempo fa acquistai un subwoofer da 600 watt RMS con cono da 18" ma non spinge molto, Ho letto che sviluppa 99db max sensivity, quindi credo che sa il valore massimo che il woofer emette!
Ora vorrei cambiare solo il woofer e girando per internet ne ho trovati alcuni... I valori a cui mi sono rifatto sono stati i watt RMS e i db 1w\1m...
Ora sono un po indeciso:
Quale tra questi 2 mi consigliate? E Perchè?
1) Eminence Sigma Pro 18 A-2
Nominal Basket Diameter 18" / 457.2mm
Impedance 8 ohms
RMS Power Rating 650 Watts
Program Power Handling 1,300 Watts
Frequency Response 41Hz - 2.4kHz
Sensitivity (1W/1m) 99dB
Voice Coil Diameter 3" / 76.2mm
Max. Crossover Frequency 2.5kHz
Rec. Enclosure Volume(Vented) 3.3-7.5cu. ft./92-212 Liters
Mounting Information
Overall Diameter 18" / 457.2mm
Bolt Circle Diameter 17.25" / 438.2mm
Baffle Cutout Diameter 16.625" / 422.3mm
No. Of Mounting Holes 8
Mounting Hole Diameter 0.275" / 7mm
Overall Depth 8.15" / 207mm
Magnet Weight 120 oz.
Shipping Weight 28.1 lbs. / 12.8kg.
Thiele-Small Parameters
Resonant Frequency (fs) 28 Hz
Impedance (Re) 6.29 ohms
Coil Inductance (Le) 1.9mH
Electromagnetic Q (Qes) .3
Mechanical Q (Qms) 8.28
Total Q (Qts) .29
Compliance Equivalent Vol. (Vas) 441.2 Liters/15.58cu. ft.
Voice Coil Overhang (Xmax) 6.1mm
BL Factor (BL) 22.1 T-M
Surface Area of Cone (Sd) .1140 m2
2)GBS 2618
* Magnet Weight: 125 oz (ca. 2,94 kg)
* Diaphram Mass inc. Airload (Mms): 142 grams
* Nominal Impedance: 8 ohm
* Mechanical Q (Qms): 8,14
* Reproduction Frequency Response: FS-2.5 kHz
* Total Q (Qts): 0.26
* Power RMS: 1000 W
* max. Power: 1800 W
* Sensitivity/SPL: 99 dB ±2 dB
* Equivalent Diaphram Radius: 100 mm (4")
* Electromagnetic Q (Qes): 0.28
* Equivalent Volume (Vas): 205 liters
* Maximum Linear Excursion (Xmax): 8.0 mm
* Minimum Frequency Response: 30 Hz
* Resonant Frequency (fs): 38 Hz
* DC Resistance (Re): 5.6 ohm
Vorrei metterli in una cassa reflex da 675 x 545 x 455 mm
Grazie in anticipo
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