ราคา 30,600.00 บาท
ราคาปกติ : 36,000.00 บาท
ประหยัดไป 5,400.00 บาท
Dual 8" 2-Way Surface Mount Subwoofer with 70/100V Multitap Transformer and 8Ω Bypass
The AD-S28Tw, part of the AcousticDesign series from QSC, is a professional-quality surface mount subwoofer designed to provide low frequency enhancement to ceiling or surface mount AD-series speakers. The subwoofer has a marine-grade plywood cabinet that houses a pair of 8" polypropylene woofers. The cabinet has a dual chamber ported bandpass design with a large port to extend low frequency response.
The subwoofer has a defeatable passive 120Hz low-pass filter with impedance compensation and a 70/100V multi-tap transformer that can also be bypassed for use with 8 ohm speaker systems, making it extremely versatile. The subwoofer can be mounted in a number of ways; freestanding with the included rubber feet, or suspended via forged-shoulder eyebolts or the included steel yoke.
Features
Package Includes:
SPECIFICATIONS
|
AD-S28Tw |
---|---|
Configuration | Surface mount bandpass subwoofer, ported |
Low-frequency transducer | Dual 8" (200 mm) weather resistant, polypropylene cone woofers, rubber surround |
Frequency range 1 Frequency response (-6 dB) Useable frequency range (-10 dB) |
42 to 165 Hz 36 to 205 Hz |
Filter | 120 Hz low-pass, passive, bypassable |
Maximum output 2 Calculated peak / continuous Output 2 pi (half space) 4 pi (full space) |
124 dB SPL / 118 dB SPL 118 dB SPL / 112 dB SPL |
Nominal impedance | 8 ohms |
Power rating Continuous power handling3 Recommended max amp power |
250 W (2 hours IEC) 500 W (loudspeaker "program" power) |
Sensitivity | 94 dB, 2.83 V at 1 m, half space (2 pi) |
Transformers | |
Type | Custom low distortion laminated core, wide bandwidth design |
Taps |
70V: 200, 100, 50, 25 W; 8Ω bypass 100V: 200, 100, 50 W; 8Ω bypass |
Enclosure | |
Material | Marine grade plywood, ABS, steel grille |
Environmental | Exceeds Mil Spec 810 for humidity, salt spray and dust; IEC 60529 IP-X4 splash rating |
Finish | Textured black paint |
Grille | Painted steel |
Connectors | Four-position barrier strip; 2 in / 2 out |
Mounting Hardware |
Black powder coated steel yoke with attachment hardware Black zinc coated forged shoulder steel M6 eyebolts Black powder coated steel shear plates with attachment hardware Black rubber feet with integral threaded bolt |
Weight | 43 lb (19.5 kg) / 55 lb (25 kg) |