PRX418S vs PRX425 — Compare
JBL PRX418S 18" Subwoofer vs JBL PRX425 15" Two-Way Loudspeaker System
The PRX418S is a dedicated subwoofer for adding deep bass extension to existing speaker systems, while the PRX425 is a full-range two-way main speaker that handles vocals, instruments, and highs on its own. Choose the PRX418S if you need focused low-end reinforcement in a sub/satellite setup; choose the PRX425 if you want a complete, portable all-in-one speaker for smaller to mid-sized venues.
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Specs side by side
| JBL PRX418S 18" Subwoofer | JBL PRX425 15" Two-Way Loudspeaker System | |
|---|---|---|
| Price | $1,060.00 | $1,060.00 |
| Brand | JBL | JBL |
| Condition | New | New |
Why choose JBL PRX418S 18" Subwoofer
- ✓ Specialized 18" driver delivers tight, extended bass from 35–250 Hz with 130 dB peak SPL
- ✓ Compact and road-ready design ideal for touring rigs and fixed installations
- ✓ Integrates seamlessly into existing full-range speaker systems without redundancy
Why choose JBL PRX425 15" Two-Way Loudspeaker System
- ✓ Complete two-way system handles full frequency range (48 Hz–19 kHz) without needing a separate sub
- ✓ Dual 15" woofers plus 1" compression driver deliver 134 dB peak SPL with vocal and instrument clarity
- ✓ Lighter at 74 lb and more portable for mobile DJ and touring applications
Frequently asked questions
Which one should I choose for a small-to-medium venue with a DJ rig?
The PRX425 is better suited—it's a complete two-way system delivering 134 dB peak SPL across the full frequency range (48 Hz–19 kHz) in one portable 74 lb cabinet. The PRX418S is a subwoofer-only and requires a separate main speaker to function.
Can I use the PRX418S on its own?
No. The PRX418S is a subwoofer designed for frequencies 35–250 Hz and lacks midrange and treble drivers. It must be paired with full-range speakers to cover vocals, instruments, and highs.
Which has deeper bass?
The PRX418S extends lower (35 Hz –10 dB vs. the PRX425's 48 Hz –10 dB) and delivers tighter, more focused low-end from 52–120 Hz. The PRX425's dual 15" woofers provide full-range bass with highs but less specialized sub-bass extension.
What's the power and SPL difference?
The PRX418S delivers 800W continuous / 130 dB peak SPL, while the PRX425 delivers 600W continuous / 134 dB peak SPL. The PRX425's two-way design with compression driver achieves higher peak output despite lower continuous power.