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JBL Stage 1220B Loaded Subwoofer Enclosure and GTX500 Amp Combo

Your Price: $275.00
Retail Price:$379.90
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Part Number:501-Audio-JBL-1220BCombo

JBL's Stage 1220B, a dual 12" sub enclosure, delivers powerful bass at an affordable price. The high-tech subs are designed to handle lots of power for deep, rich bass, yet play nimbly and efficiently to deliver impressive musical accuracy. The subs pair perfectly with the handlome, rugged slot-port enclosure, which increases the overall efficiency, and is built to last.

General Specifications
Power handling500 watts RMS/1000 watts peak
Sensitivity94 dB
Frequency response34Hz - 200 Hz
Nominal impedance2 ohms
Voice coil diameter (each)2" (50.8mm)
Enclosure dimensions30-1/8"W x 15"H x 13-11/16"D1 x 10-1/2"D2
Enclosure materials5/8" MDF with black carpet covering


  • The JBL GTX500 is the ideal upgrade for those car audio enthusiasts who want exceptional bass without breaking the bank. And don’t let its size fool you. While the GTX500 may be compact, with a max power output of 750 watts you can drive your subs as you see fit. While its true JBL sound sets it apart from other subwoofer amps, it’s ease-of-use and installation, configuration and calibration makes it truly stand out—it connects to OEM or aftermarket systems without complicated adapters or setup routines.

General Specifications

Max Power770W X 1
Rated Power350W RMS x 1 @ 4 ohms,500W RMS x 1 @ 2 ohms
Input sensitivity/impedance (low-level input)100mV – 2V/>7k ohms
Input Sensitivity/Impedance (speaker-level input)Input sensitivity/impedance (speaker-level input) 2V – 15V/120 ohms
Fuse Replacement25A x 2
Weight6.4 lb (2.9kg)

Audio Specifications

Signal-to-Noisegreater than 80dB ref. 1W
Frequency Response20Hz – 200Hz (±0.5dB); 10Hz – 300Hz (±3dB)


Height (in)2-9/16
Width (in)9-11/16
Depth (in)8-3/8
Height (mm)66
Width (mm)246
Depth (mm)213

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