TrueLine TL218SS

TrueLine TL218SS

Extreme high SPL extended bass loudspeaker system

Key Features 

  • Extended Low Frequency
  • High Level Output
  • High Power Handling
  • Low Power Compression
  • Removable Caster Board
  • Tour grade enclosure and mechanics
  • A perforated powder coated steel grill with a high transmission ratio

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System Performance  
Frequency Response (-3dB)* 25 Hz – 150 Hz
Frequency Range (-10dB) 18 Hz – 150 Hz
Recommended High-Pass 20 Hz – with minimum 24 dB / octave (4th order) Butterworth slope
Nominal directivity (-6dB) Omni or cardioid
Recommended Crossover Frequency 90 Hz (acoustic, active, external DSP)
RMS handling capacity** LF: 4000 W
Maximum SPL @ 1 Meter*** 143 dB ([WorxAudio] preset)
Components LF: 18” (457.2mm) x 2
Nominal Impedance LF = 4 ohms, Self Powered
Enclosure Baltic birch plywood, engineered plastics, and aluminum frame
Finish Two-part spray catalyzed Polyurea coating on plywood
Grill 14-gauge (1.0 mm) perforated steel, powder-coated finish, black
Environmental Indoor use only
Connectors Two (2) parallel-wired NL4 Neutrik® Speakon® connectors
Power Amp Connectors Neutrik® powerCON (AC) XLR M/F (In/Out)
Suspension/Mounting Internal bracket w/ threaded .375” Flying points (x24)
Dimensions 22.5” H x 48” W x 30.0” D (571.5 mm x 1,219.2 mm x 762 mm)
Net Weight 285 lb. (129.27 kg)
Shipping Weight 295 lb. (133.80 kg) - approximate with carton
Product Versions TL218i, TL218i-P, TL218T, TL218T-P
Digital Power Amp PXD-2500
2500W (x1) LF
Digital (100) program processing, LCD readout
XLR M/F Isolated I/O
AC powerCON I/O
* Frequency response and range measured on-axis with anechoic environment.
** Power handling tested using pink noise filtered to meet IEC 268-5, 6 dB crest factor, 100 hours, with recommended EQ.
*** Peak level measured at 1m under free field conditions using 10 dB crest factor pink noise with specified ([WorxAudio] preset) and corresponding EQ settings.


The TrueLine TL.218SS is designed to satisfy the need for an extreme high SPL sub bass loudspeaker system. Components have been selected solely for their performance.

The TrueLine TL.218SS utilizes two direct radiating 18” 2000W cone drivers in a tuned enclosure, which provides maximum output with minimal distortion and smooth extended low frequency response. The tour tested 21 ply Baltic Birch highly braced enclosure and 24mm thick baffle board construction provide unsurpassed rigidity and strength. The enclosure is built to truck pack dimensions for efficient transportation of multiple units, and should be arrayed to increase performance in large or outdoor venues.

The TrueLine TL.218SS is designed to be used for low frequency sections in multi-way speaker systems, or as a sub bass section in any sound system requiring extend low frequency response and the highest quality audio reproduction. The TrueLine TL.218SS comes with a multi-layered catalyzed Polyurea finish and is offered with a variety of color options.

The TrueLine TL.218SS delivers the transparent sonic quality and easy portability necessary for the demands of professional audio today.

System Components

Screen View EASE Focus

EASE Focus 2 Array Software

EASE Focus 2 to be used when arraying multiple V-SERIES or X-SERIES line array.

AC Cable

AC Cable

PowerCon cable to be used with our PMD, PSD, and PXD Series Amplifiers.


To be used with Ethernet cable to control PXD-2500, PXD-2580, PXD-8080 Series Amplifier.

3/4" Rigging Shackle

To be added to the X-SERIES and V-SERIES rigging grids.


PowerCon to Edison cable 6ft in length to be used with our PMD, PSD, and PXD Series Amplifiers.

Stainless Steel 3/8" Rigging Pins

Rigging Pins in case original pins are damaged or lost.

Dolly PlateTD-218

Transport Dolly w/ Camloc Connectors for the TL218S sub speaker.

Stainless Steel 3/8" Rigging Pins

Rigging Pins in case original pins are damaged or lost.


The Lamb's Chapel - Hall River, NC

Products Used

  • TrueLine X1
  • TrueLine TL118SS
  • TrueLine  TL218SS
  • WaveSeries 8M
“Everyone at the church—including the clergy, music staff, and the congregation—has been extremely enthusiastic. The sound quality from the Worxaudio loudspeakers is clear and even no matter where one happens to be seated. The pastor, choir, and others on stage can hear clearly. Combine all this with a first-rate visual presentation and you have a recipe for success.”

— Paul Boone, President and CEO of Boone Audio

White Oak Worship Center - Blairs, VA

Products Used

  • TrueLine X1
  • TrueLine V5
  • TrueLine  TL218SS
  • TrueLine V8
  • WaveSeries 8M
“The church wanted the sound to be clear, comfortable, and distinct, and that’s exactly what we delivered. We continue to receive compliments for the design and performance of the entire system. Several pastors from various area churches have visited the facility to experience the system and this has led to new projects for our firm. In my mind, that’s the best compliment of all.”

— Paul Boone, Boone Audio

Christ Fellowship Church - Royal Palm Beach, FL

Products Used

  • TrueLine  TL218SS
  • TrueLine V8
“With this setup, coverage is extremely even no matter where you sit and the system has a commanding presence all the way to the rear of the room. We’ve received very positive comments from the church’s senior level worship team and after hearing the system in their Royal Palm Campus sanctuary, church management decided to explore the possibility of upgrading other locations.”

— Paul Boone, President and CEO of Boone Audio 

South Aiken Church of God - Aiken, SC

Products Used

  • TrueLine  TL218SS
  • TrueLine TL215S
  • TrueLine V8
“Everyone is very impressed with the clarity and natural-sounding music reproduction quality of the system,” Templeton said. “The WorxAudio setup offers phenomenal low end and delivers consistent sound no matter where you happen to be seated throughout the sanctuary. There’s also plenty of headroom to support the most ambitious musical performances. When my clients are happy, that’s the best compliment of all.”

— Michael W. Templeton, President of Templeton Sound Systems 

Gospel Temple Worship Center - Florence, SC

Products Used

  • TrueLine  TL218SS
  • TrueLine X1M
  • TrueLine X3
“There’s a lot of sound system in this room and yet, it’s visually quite unimposing. No matter where one sits, the coverage is extremely even and clear. This is a high performance system that offers tremendous return on investment. Both Church officials and members of the congregation have commented numerous times about the coverage and the consistency of the sound throughout the entire room.”

— Michael W. Templeton, President of Templeton Sound Systems, Orangeburg, SC

Cross Pointe Ministries - Tupelo, MS

Products Used

  • TrueLine  TL218SS
  • TrueLine X1
“WorxAudio’s support was terrific. They did a great job modeling the room and had my back every step of the way. Speech intelligibility is terrific and the sound remains consistent throughout the entire space. The client is thrilled and I’ve had other churches come by to listen and observe the system. I can say with confidence, they're the best speakers I’ve ever heard!

— Terry Hayes, owner of Pro Concert Music, Inc., Tupelo, MS

World Overcomers Christian Church - Durham, NC

Products Used

  • TrueLine  V5
  • TrueLine TL218SS
  • TrueLine V8
  • UltraMax M1-P
“From day 1, everything has worked really well. The coverage is consistent from side to side and front to rear. The broad horizontal dispersion characteristics of the WorxAudio loudspeakers made all the difference in this extremely wide room. The audio quality is terrific. Speech intelligibility is excellent, as is the system’s ability to reproduce music accurately. We’ve received numerous compliments on this setup.”

— David Williams, HiTech Electronics of Greenville, North Carolina 

Marion Church of God - Marion, SC

Products Used

  • TrueLine  TL118SS
  • TrueLine X1M
  • TrueLine  TL218SS
  • WaveSeries 8M
“We’ve received a huge number of compliments from both church management and the congregation. No matter where you walk, the sound coverage is crystal clear and even. WorxAudio’s TrueLine X5i-P is a really unique line array system that offers tremendous bang for the buck and the TL118SSi-P subwoofers output a tremendous amount of low-end punch you have to feel to appreciate.”

— Michael W. Templeton, President of Templeton Sound Systems, Orangeburg, SC

University of Tennessee - Knoxville, TN

Products Used

  • TrueLine X5
  • TrueLine  TL218SS
  • TrueLine V10
"We received nothing but compliments on the sound system. At the end of the day, it all boils down to the sound quality—and WorxAudio delivers. The V10’s have an amazing frequency range. They go quite low, so it’s just amazing what you can get out of the system. Speech intelligibility was terrific and the sound was as good as it gets."

— Scott Grimsley, President of Sound Ventures, Knoxville, TN

Springs First Church - Colorado Springs, CO

Products Used

  • TrueLine X1
  • TrueLine  TL218SS
“One of the greatest strengths of the WorxAudio X1i-P line array is its very wide 160-degree horizontal dispersion. Because of this, with just a left - right hang, we were able to achieve excellent coverage throughout the entire seating area. As for the TL218SS subwoofers, low frequency sources such as the bass drum and bass guitar are finally getting the low end support they deserve.”

— Doug Hood, President of CSD (Custom Sound Designs) Group, Inc., Fort Wayne, IN