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Car Audio
JBL  |  SKU: JBLSUBST122AM
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JBL Stage122 12" Subwoofer Single 4 Ohm

Sale price $109.99 Regular price $131.99
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Key features

  • Subwoofer size: 12.0 inches
  • RMS power per subwoofer: 250 W
  • Voice-coil options: S4
  • Frequency response: 34 Hz–200 Hz
  • Sensitivity (2.83 V): 91 dB
  • Cone and surround: Polypropylene with rubber surround

Coil Configuration

Description

Product Overview

Add JBL bass to your car audio system with the JBL Stage 122 12-inch car subwoofer. Its 250W RMS power handling, 4-ohm single voice coil, and 34Hz–200Hz frequency response make it a straightforward choice for a first subwoofer upgrade.

The polypropylene cone and Hi-Roll rubber surround are designed for accurate, deep bass. JBL transducer engineers individually voice each Stage 122 for consistent JBL bass character.

Key Features & Benefits

  • 250W RMS power handling: Match it with an amplifier rated for 150–250W RMS at 4 ohms.
  • Single 4-ohm voice coil: Keep system wiring simple without managing dual voice coil configurations.
  • Polypropylene cone: Its lightweight, rigid construction supports accurate, low-distortion bass reproduction.
  • Hi-Roll rubber surround: Supports cone excursion for deep, punchy bass.
  • 91dB sensitivity: The stated sensitivity is 91dB at 2.83V/1m.
  • 34Hz–200Hz frequency response: Covers deep sub-bass through upper bass.

Technical Specifications

Specification Value
Brand JBL
Model Stage 122
Size 12"
Power Handling (RMS) 250W
Power Handling (Peak) 1,000W
Sensitivity (@ 2.83V/1m) 91dB
Frequency Response 34Hz – 200Hz
Impedance 4 ohms (Single Voice Coil)
Voice Coil Diameter 2" (50.8mm)
Cone Material Polypropylene
Surround Material Hi-Roll Rubber
Weight 4.5 kg

Why Choose This Product?

The Stage 122 combines a familiar 12-inch format with a single 4-ohm voice coil, making amplifier matching and wiring more direct. Its 250W RMS rating gives you a clear target when choosing a mono amplifier, while the JBL-voiced sound and stated frequency range help shape the system’s bass character.

Choose a ported enclosure tuned to 35–40Hz for greater output with bass-heavy music. A sealed enclosure is the suggested option for tighter, more accurate bass with rock, jazz, or everyday listening.

Installation & Compatibility Notes

Pair the subwoofer with a mono amplifier rated at 150–250W RMS at 4 ohms. The JBL Stage GT 50011 is rated at 300W RMS at 4 ohms; if using it, keep the gain conservative to stay within the subwoofer’s 250W RMS rating.

For a ported enclosure, the source recommends an 80Hz low-pass crossover and a 30Hz subsonic filter. It also recommends 8 AWG or heavier speaker wire from the amplifier to the subwoofer, plus 4-gauge power and ground wire to the amplifier.

Frequently Asked Questions

Is the JBL Stage 122 single or dual voice coil?

It has a single 4-ohm voice coil, so there is no dual voice coil wiring configuration to manage.

What amplifier rating should I use?

Choose a mono amplifier rated for 150–250W RMS at 4 ohms. If using the 300W RMS JBL Stage GT 50011, keep its gain conservative.

Which enclosure should I choose?

A ported enclosure tuned to 35–40Hz is recommended for maximum output. A sealed enclosure is suggested for tighter, more accurate bass.

What crossover and subsonic filter settings are recommended?

For a ported enclosure, the source recommends an 80Hz low-pass crossover and a 30Hz subsonic filter.

What are the subwoofer’s power ratings?

It is rated for 250W RMS and 1,000W peak power handling. Use the RMS rating when matching amplifier power.

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