JBL E140 Low Frequency Driver
The JBL E140 is a 15-inch musical instrument driver for bass guitar and live sound. It belongs to JBL’s E Series. It is efficient and built to take stage abuse, and gigging musicians and system techs used it for that reason.
Specifications
| Type | 15" (380mm) Musical Instrument Driver |
|---|---|
| Voice Coil Diameter | 3 inches (76mm) |
| Magnet | Ferrite |
| Nominal Impedance | 8 Ω |
| Power Handling | 200W continuous |
| Frequency Response | 35 Hz - 2.5 kHz |
| Sensitivity | 98 dB/W/m |
| Resonant Frequency (Fs) | ~35 Hz |
Design Features
- High Efficiency: With 98 dB sensitivity, the E140 turns every watt into raw, room-filling bass
- Musical Instrument Optimized: Voiced specifically for bass guitar and instrument amplification—tight, punchy, and articulate
- Robust Construction: Engineered for the road, with components that withstand the shock, heat, and humidity of touring
- Extended Low Frequency: A true 15-inch powerhouse, capable of deep, controlled lows that anchor any rig
Applications
- Bass guitar cabinets
- Sound reinforcement systems
- Stage monitoring
- General purpose low-end reinforcement
Enclosure Design
JBL’s Professional Enclosure Guide lays out enclosure designs for the E140, for either a single or a dual-driver cabinet.
Single Driver Configuration
| Application | General purpose low-end |
|---|---|
| Chart Reference | #6 |
| Enclosure Volume | 4.0 cubic feet (113 liters) |
| Tuned Frequency | 40 Hz |
| Internal Dimensions | 23.6" H x 19.2" W x 16.7" D |
| Vent Area | 25.1 sq in (2x 4" ducts) |
| Duct Length | 6.5 inches |
Dual Driver Configuration
| Application | General purpose low-end |
|---|---|
| Chart Reference | #11 |
| Enclosure Volume | 10.0 cubic feet (283 liters) |
| Tuned Frequency | 30 Hz |
| Internal Dimensions | 32.0" H x 26.1" W x 22.6" D |
| Vent Area | 75.4 sq in (6x 4" ducts) |
| Duct Length | 15.2 inches |
View the complete JBL Professional Enclosure Guide →
Related Drivers
- JBL E145 - Higher power 15" MI driver
- JBL E130 - Full-range 15" MI driver
- JBL E155 - 18" bass guitar driver
- JBL 2205H - Professional 15" alternative
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Documentation
- Lansing Heritage - Comprehensive JBL specifications, photos, and historical documents
- HiFi Engine - JBL manuals, service documents, and brochures
- Audio Karma JBL Forum - Community discussions and restoration guides