JBL LSR4312SP 12 inch Powered Subwoofer (Discontinued)
Usually arrives in 5-9 business days.
The A-120 subwoofer was designed for exceptional performance and value. It features a 12'' extra-long excursion woofer with high BL motor. The bass reflex enclosure with flared port ensures extended bass response and high acoustic efficiency.
The woofer is driven with an integral 300W class A/B amplifier utilizing the patented BASH technology for high electrical efficiency. The integral rear-mounted 300 watt amplifier includes level, phase (continuously variable 0-180°) and crossover control to contour the subwoofer’s output to blend with virtually all loudspeakers and room environments. The integral low pass crossover network is continuously-variable from 40Hz to 120Hz and can be bypassed if it is preferable to use an external crossover located in an outboard receiver or processor.
The A-120’s integral amplifier incorporates a defeatable signal-sensing circuit that automatically powers up the amplifier when a signal is detected. A double-insulated isolated-ground electrical supply prevents electrical ground loops and reduces the noise floor of the entire audio system.
What's in the box?
| Frequency Response | 28Hz - 300 Hz (System Response) |
|---|---|
| Crossover Response | 40Hz - 120Hz (Low-pass filter with bypass switch) |
| Phase Adjustment | 0 - 180 degrees (Continuously variable) |
| Amplifier Output Power | 300 watts, with thermal and clipping limiters |
| Audio Inputs | Speaker Level (Stereo 5-way binding post) |
| Input Impedance: | ine Level - 20k ohms, Unbalanced Speaker Level -220 ohms |
| Input Power | 120V 60Hz AC |
| Input Power Connection | IEC 2-wire receptacle with integral fuse holder |
| Power (Mains) Fuse | 3.15A 250V T3.15AL (5x20mm) style Slow Blow |
| Power Modes | Auto signal sensing and always on |
| Auto Off Delay | ~10 minutes |
| Overall Dimensions (H x W x D) (Without Feet) | 17-5/16" (440 mm) x 15-3/8" (390 mm) x 14-3/4" (375 mm) |
| Shipping Dimensions (H x W x D) | 20" (440 mm) x 21" (533 mm) x 20" (508 m) |
| Weight | 43 lbs (19.5 kg) |
| Shipping Weight | 51 lbs (23.2 kg) |
Model #:
Usually arrives in 5-9 business days.
Model #:
Usually arrives in 5-9 business days.
Model #:
Usually arrives in 5-9 business days.
Model #:
Usually arrives in 5-9 business days.
Model #:
Usually arrives in 5-9 business days.