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A budget powered PA sub should be judged by its published driver size, usable frequency range, maximum SPL, input/output routing, and whether it will physically support your tops. Peak-watt figures alone are not a comparison. The lower-cost models here suit small DJs, bands, rehearsal rooms, and event systems; the last two are clearly labelled step-up options for buyers whose budget can stretch. Match crossover and output routing to your tops, and use a pole only where the manufacturer provides a rated socket or threaded mount.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Alto Professional TX18S | $500–$650 | Amazon · eBay |
| 2 | Alto Professional TS18S | $700–$900 | Amazon · eBay |
| 3 | Behringer Eurolive VQ1800D | $400–$550 | Amazon · eBay |
| 4 | Harbinger VARI V2318S | $700–$850 | Amazon · eBay |
| 5 | Harbinger VARI S12 | $450–$600 | Amazon · eBay |
| 6 | Mackie Thump115S | $600–$750 | Amazon · eBay |
| 7 | Mackie Thump118S | $700–$850 | Amazon · eBay |
| 8 | Samson RSX18SA | $600–$800 | Amazon · eBay |
| 9 | JBL IRX115S | $850–$1,050 | Amazon · eBay |
| 10 | Electro-Voice ELX200-18SP | $1,000–$1,300 | Amazon · eBay |
The picks, in detail
Alto Professional TX18S
A current value 18-inch sub with 900 W peak Class-D amplification, published 36–115 Hz response and 126 dB maximum SPL; a strong budget choice for basic stereo PA routing.
- 18-inch woofer with 3-inch voice coil
- 450 W RMS / 900 W peak Class D
- 36–115 Hz (-3 dB), 126 dB max SPL
- Two combo inputs and two XLR outputs
- 36 mm pole socket and selectable 80/100/120 Hz low-pass filters
- Large 87.7-pound enclosure
- No advanced network control
Alto Professional TS18S
A more powerful 18-inch Alto option with a 2,500 W peak Class-D amp, two combo inputs, XLR thru outputs, selectable EQ, and a 36 mm pole socket.
- 18-inch driver with 3-inch voice coil
- 2,500 W peak Class D
- Combo XLR/¼-inch inputs and XLR thru
- Phase-alignment settings
- Clip, thermal and driver-overload protection
- Priced above entry-level TX18S
- Check current dealer price before calling it a bargain
Behringer Eurolive VQ1800D
A compact-priced 18-inch active sub with 500 W Class-D output, a 40–200 Hz published range, 124 dB maximum SPL, and onboard active stereo crossover.
- 18-inch custom-designed transducer
- 500 W Class D
- 40–200 Hz, 124 dB max SPL
- Active stereo crossover simplifies small PA setups
- Usually one of the lowest-priced 18-inch options
- Lower stated SPL than many larger-budget alternatives
- Confirm regional voltage version
Harbinger VARI V2318S
An 18-inch active vented sub with 600 W RMS / 2,400 W peak rating, 35–150 Hz response and 134 dB maximum SPL, plus plywood cabinet construction.
- 18-inch woofer
- 600 W RMS / 2,400 W peak
- 35–150 Hz, 134 dB max SPL
- Two XLR/TRS inputs and two XLR outputs
- 35 mm pole mount and locking casters
- 86-pound cabinet
- Dealer availability is narrower than major brands
Harbinger VARI S12
A smaller 12-inch active sub for compact systems where an 18-inch cabinet is excessive; its published 400 W RMS / 1,000 W peak rating and 35–150 Hz range suit modest tops.
- 12-inch active vented subwoofer
- 400 W RMS / 1,000 W peak
- 35–150 Hz, 130 dB max SPL
- 46.2-pound compact cabinet
- XLR/TRS inputs, XLR outputs, delay and adjustable crossover
- Less cone area than 15- or 18-inch models
- Not the choice for a large dance floor
Mackie Thump115S
A current 15-inch, 1,400 W peak powered sub with 36–200 Hz response and 131 dB maximum SPL. It is a practical middle size for portable rigs.
- 15-inch ferrite woofer
- 1,400 W peak Class D
- 36–200 Hz, 131 dB max SPL
- Stereo XLR inputs plus high-pass and full-range outputs
- M20 threaded pole mount
- More expensive than entry 18-inch models
- Published power is peak, not continuous
Mackie Thump118S
An 18-inch, 1,400 W peak sub with 30–200 Hz response and 132 dB maximum SPL, configurable with Flat, Deep, Punch, or variable crossover voicings.
- 18-inch ferrite woofer
- 1,400 W peak Class D
- 30–200 Hz, 132 dB max SPL
- Stereo XLR input, high-pass and full-range output routing
- M20-threaded pole mount
- 65.5-pound cabinet
- Usually above the strict entry-budget tier
Samson RSX18SA
A powered 18-inch PA sub with a 500 W continuous / 1,000 W peak amp, 40–150 Hz response, balanced stereo XLR I/O, and a pole-mount socket.
- 18-inch woofer
- 500 W continuous / 1,000 W peak
- 40–150 Hz frequency response
- Stereo XLR inputs and outputs
- Compact value alternative to the largest touring cabinets
- Check dealer stock and price
- Less sophisticated DSP than newer models
JBL IRX115S
Near-miss step-up option: a 15-inch 1,300 W powered sub with a published 35–147 Hz range, 128 dB maximum SPL, two combo inputs and XLR pass-through.
- 15-inch driver
- 1,300 W amplifier
- 35–147 Hz, 128 dB max SPL
- Compact 15-inch professional-brand format
- Two combo inputs simplify small mixers
- Often above entry-budget pricing
- Confirm the pole-mount hardware for your setup
Electro-Voice ELX200-18SP
Near-miss step-up option: an 18-inch powered sub with 1,200 W Class-D amplification, 132 dB maximum SPL, QuickSmartDSP, XLR I/O, and an M20 pole mount.
- 18-inch EVS-18L woofer
- 1,200 W Class D
- 132 dB max SPL with QuickSmartDSP
- DSP screen and presets
- M20 threaded pole mount
- Generally exceeds a strict budget cap
- Higher purchase price than the entry picks
Buying tips
- Set the crossover to complement the low-frequency limit of your top speakers, not to the largest number on the sub’s box.
- Use balanced XLR runs where possible and keep gain staging conservative to avoid limiter abuse.
- Verify a pole socket or threaded mount before putting a top cabinet above the sub.
- Compare peak-power claims separately from RMS or continuous ratings.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.