Gearank

The JBL SRX828SP has one of the highest Max SPL levels of the powered subwoofers we've analyzed.

JBL packed these with features: HiQnet networking giving you complete control over tuning your system with a tablet app for iOS and Android; user-configurable DSP; Drivecore amplification by Crown; LCD screen and a handy glow in the dark rear panel.

Features

• Frequency Response: 29 Hz to 150 Hz (-10 dB)
• Crossover: 80 Hz
• Max SPL: 141 dB
• Power Rating: 2000 Watts Peak - 1500 Watts Continuous
• Drivers: 2 x 18"
• Input Connectors: 2 x XLR/TRS
• Output Connectors: 2 x XLR
• Polarity: Not specified
• Enclosure Material: 18 mm Plywood
• Dimensions: 22.57" x 47.42" x 26.79"
• Weight: 145 lbs (65.9 kg)

The following video explains the SRX Connect app:

Pros

The most common comment in positive reviews is that these are loud - the term "earth shaking" came up more than once in customer reviews. Many people, including a few that operate or hire companies, said this unit is incredibly strong and sturdy.

Cons

There were very few complaints - someone suggested that casters should ship with it instead of being optional, someone else pointed out that some control features only work via the app - EG if you mute a speaker you can only unmute it if you have the app running - even after turning them off and on.

Overall

If you want nothing less than earth shaking bottom end, then the JBL SRX828SP is definitely a good option. These were on our recommended list for over 3 years and only came off when in November 2019 when a thorough review of the category showed there were more highly rated options available which you can see in our guide to The Best PA Subwoofers.