Cant locate serial number - Jl Audio 12W7 Car Subwoofer question. The serial numbers on the FS130, HL90K,HT101 and BG55 would be on stickers if they are still there. The MS250 serial numbers are located on a 'flat' by the side of the exhaust and sprocket cover. (depending on the year. Got to echo the comments about buying from a non-authorized on-line dealer. When a non-dealer sells a JL Audio woofer he cuts the serial number out which is concealed under the spider by slicing the spider and gluing it back with lord knows what type of glue.
Sidebar 1: Specifications Fathom f212v2: Powered, sealed-box subwoofer. Drive-units: two 12-W7 12' cone woofers with 3.5'-diameter voice-coil and 3' peakpeak excursion. Effective piston area: 168 in3. Magnet weight: not specified. Low-pass filter: variable, 30130Hz, 12 or 24dB/octave. High-pass filter: not supplied. Inputs: stereo or mono balanced (single XLR connector), stereo or mono unbalanced (single RCA connector).
Input modes: Master, Slave. Outputs: single balanced (XLR) to additional subwoofer. Input impedance: 50k ohms (RCA), 100k ohms (XLR). Input sensitivity: 166V for 105dB SPL.
Front-panel controls: Power (On/Off/Automatic Signal Sensing); Digital Automatic Room Optimization (Demo/Defeat/Calibrate, with supplied calibration microphone); Level (Reference, Variable); Master Level (variable, full mute to +15dB over reference); lights (on/off/dim); Low-Pass filter (12dB/24dB/Off); Extreme Low Frequency (ELF) Trim (variable, 12dB to +3dB at 25Hz); Polarity (0°/180°); Phase (variable, 0280°, at 80Hz). Amplifier: switching, class-D, 3600W RMS short-term. Frequency response (anechoic): 2097Hz, ±1.5dB; 19110Hz, ±3dB; 15157Hz, ±10dB. Distortion: 115dB, ref. Rated output voltage. Low-pass frequency response: +0/1dB, 5Hz to ¼ of filter frequency. High-pass frequency response: +0/1dB from 4x filter frequency to 80kHz.
![Audio Audio](/uploads/1/2/5/4/125415113/285424380.jpg)
Power consumption: 30W typical, with or without signal. Dimensions: 17.4' (441mm) W by 3.8' (97mm) H by 15.67' (398mm) D. Weight: 22 lbs (10kg). Finish: Brushed aluminum.
![Serial Serial](http://mediacdn.jlaudio.com/media/mfg/9013/product_image/x4_30cb61dc905c38b6c6862391fafc846e.jpg?1543935070)
Serial number of unit reviewed: 56. Price: $3000. Both: Approximate number of dealers: 200. Warranty: 2 years, parts & labor, nontransferable. Manufacturer: JL Audio, 10369 N. Commerce Parkway, Miramar, FL.
Tel: (954) 443-1100. Fax: (954) 443-1111.