Buy Turbosound THL4 and TSW721 PA System at musicconcertevent.com

If you are looking to buy a used Turbosound THL4 and TSW721 PA system with original components at a direct price, musicconcertevent.com has this complete top and sub combination available now and shipping worldwide. The listing includes 2 Turbosound THL4 full-range tops at $1,500 for the pair and 4 Turbosound TSW721 single 21-inch subwoofers at $2,100 for the set of four. Compatible Powersoft amplifiers are also available for this system, ask for details when ordering.

This is a complete working PA foundation for sound engineers, production companies, rental businesses, club managers, festival DJs, and live event organizers who need a proven Turbosound system with original internal components and do not want to start from scratch sourcing matched gear from multiple sellers. No grills and no wheels are included, and that is stated clearly so there are no surprises on delivery.

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What Is the Turbosound THL4

The Turbosound THL4 is a bi-amped 3-way full-range loudspeaker enclosure from Turbosound’s Hilight Series. Based on confirmed product documentation, it is designed to provide full-range frequency response from 55Hz to 20kHz and is intended for sound contracting and touring sound reinforcement applications.

Confirmed specifications:

• Type: Bi-amped 3-way full-range loudspeaker enclosure
• Frequency range: 55Hz to 20kHz
• Driver complement: 18-inch LF driver loaded with a TurboBass device, 10-inch MF driver loaded with a TurboMid device, HF compression driver
• Application: Primary sound reinforcement, sound contracting, touring
• Designed for use with the LMS-D6 or LMS-A6 loudspeaker management systems
• Dispersion: 55 degrees horizontal by 40 degrees vertical at -6dB
• Condition in this listing: Used, original components, no grills, no wheels

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What Is the Turbosound TSW721

The Turbosound TSW721 is a single 21-inch passive subwoofer incorporating Turbosound’s patented TurboBass loading technology. It is designed for applications that require accurate and powerful low-frequency reproduction at very high levels, in both fixed installations and mobile touring systems.

Confirmed specifications from product documentation:

• Driver: Single long-excursion 21-inch LF driver
• Enclosure type: Vented (bass reflex) with TurboBass partial horn loading
• Power handling: 600 watts RMS, 1,200 watts program, 1,500 watts peak
• Sensitivity: 101dB at 1W/1 meter
• Maximum peak SPL: 137dB
• Recommended crossover point: 80 to 150Hz with 24dB/octave low-pass filter
• Cabinet material: 18mm birch plywood, rebated, screwed and glued
• Connector: NL4 Speakon (as noted in comparable listings)
• Condition in this listing: Used, original components, no grills, no wheels

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What Is a PA Package and How Does This System Function Together

A PA package is the full signal chain from audio source to audience, combining mixing, signal processing, amplification, and loudspeakers. The Turbosound THL4 and TSW721 combination covers the speaker side of that chain, handling everything from the deep sub-bass range up through full-range program material.

In a typical deployment, the TSW721 subwoofers handle frequencies from the low end up to the crossover point of 80 to 150Hz, and the THL4 full-range tops carry everything above that crossover point up to 20kHz. With 4 TSW721 subwoofers and 2 THL4 tops, the system is configured for medium to large events where sub-bass output and coverage consistency are required. Production professionals working at companies like Sasphonik or Boston Pro Sounds regularly work with this class of Turbosound system for live events, touring, and installed sound contracts.

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Compatible Powersoft Amplifiers for This System

Powersoft amplifiers are available separately to drive this Turbosound system. Since the THL4 is a passive bi-amped cabinet and the TSW721 is a passive subwoofer, external amplification and signal processing are required for both. Powersoft multi-channel DSP amplifiers are a natural pairing for systems of this type due to their per-channel DSP control, network management capability, and power efficiency.

Contact musicconcertevent.com directly to get details on the specific Powersoft amplifier models available for this system. Buying the amplifiers from the same source as the speakers reduces compatibility guesswork and simplifies system setup.

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Best Amplifiers to Consider for Turbosound THL4 and TSW721

For buyers who need to source amplification independently, the following requirements apply based on the confirmed TSW721 specifications:

• Minimum 600 watts RMS per subwoofer channel at the correct impedance
• DSP processing with low-pass filter capability at 80 to 150Hz with 24dB/octave slope
• Separate amplifier channels or a dedicated amp for the THL4 bi-amp configuration (LF and HF/MF channels)
• Limiting protection to prevent exceeding the 1,500 watt peak rating of the TSW721

Multi-channel DSP amplifiers from manufacturers such as Powersoft reduce the rack unit count while providing the processing and protection required for both cabinet types in this system.

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What to Consider Before Starting a PA Event Company

Before building a PA rental or event production business around a system like this, the following points determine whether the operation is viable:

• Amplifier rack: passive systems require external amps and a signal drive chain
• System processing: a dedicated drive processor or DSP amplifiers are required for correct crossover and time alignment
• Rigging and transport: road cases for the THL4 tops and subwoofer covers for the TSW721 units protect the investment during transport
• Crew: load-in, system setup, and tuning require trained personnel
• Insurance: equipment insurance and public liability at events are non-negotiable for professional operation
• Redundancy: backup amplifiers and cable spares prevent avoidable show failures

Owning a complete matched system with a known signal chain is a significant advantage over renting piece by piece. This Turbosound lot gives a new PA company a foundation that can be built around immediately.

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Why Start a PA Rental Business With This System in 2026

The live event market in the USA and Europe continues to grow in 2026. Venues, festivals, corporate events, and touring productions all need local production support, and rental companies that own professional-grade passive systems can service that demand competitively. Buying used touring-grade gear with original components at direct prices is how established rental businesses built their inventories, and that model is more accessible now than it was five years ago because of the volume of touring gear coming off professional use.

The Turbosound THL4 and TSW721 combination is recognized equipment in the professional audio market. It is not entry-level gear. When you show up to a venue with a matched Turbosound system, production managers and sound engineers know what they are working with.

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Estimated Retail Value and Resale Margin

These are estimates based on comparable used Turbosound listings in the professional audio market. Actual resale prices depend on platform, buyer, and condition verification at delivery.

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Real Profit Example

An AV reseller purchases both lots, spending $3,600 total. After testing and photography, they list the 4 TSW721 subwoofers individually on GearSource at $950 each. Selling all four returns $3,800, already recovering the full investment with $200 margin remaining. The 2 THL4 tops are then listed at $900 each on Reverb. Selling both returns $1,800, adding to the profit. Total return: $5,600. Net profit on a $3,600 investment: $2,000. Alternatively, a rental company retains all 6 units and charges $250 per event day for the full system. Two events per month return $500 per month, recovering the investment in 7 to 8 events.

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Where to Sell Used Turbosound PA Equipment

Used Turbosound gear sells consistently on the following platforms across the USA and Europe:

• GearSource: production professionals and rental companies actively purchasing
• Reverb: established pro audio community in North America and Europe
• eBay: broad reach, Turbosound is a recognized brand with a motivated buyer base
• Facebook Marketplace: fast local transactions without shipping logistics
• LinkedIn: direct outreach to venue owners, production managers, and touring companies

For complete system lots, contacting production companies and regional rental houses directly produces faster results than listing unit by unit on consumer platforms.

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Why Our PA Units Are Different

Both the THL4 tops and the TSW721 subwoofers in this listing carry their original components. No drivers have been substituted. The cabinets are from the same system, meaning they have been run together and are acoustically matched in terms of component age and service history. The condition is stated clearly: used, original components, no grills, no wheels. Nothing is hidden and nothing is overstated.

Most used touring speaker listings do not confirm original component status. They list condition as good or excellent without specifying whether repairs have been made. This listing does not operate that way.

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Why Buy From musicconcertevent.com

musicconcertevent.com sources professional audio and event equipment from touring productions, installation contractors, and verified sellers. Every listing is based on what the gear actually is, not what would help it sell faster. Condition is stated accurately, including limitations like missing grills and wheels when that is the case.

For buyers in the USA and across Europe, worldwide shipping is available on this listing. Compatible Powersoft amplifiers are available for this system and can be purchased alongside the speakers. All transactions are completed through the website.

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Shipping Information

Orders within the USA are processed and dispatched within 3 to 5 business days. International orders to Europe and other regions are dispatched within 5 to 7 business days. Tracking information is provided at the time of dispatch for all orders.

Local pickup is not available for individual unit or standard quantity purchases. All such orders are conducted online only through the website. Local pickup by appointment is available exclusively for truckload purchases. If you are purchasing a truckload volume, contact us directly to coordinate pickup logistics.

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Comparison: musicconcertevent.com vs SoundBroker vs GearSource

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Frequently Asked Questions

Where can I buy a Turbosound THL4 and TSW721 PA system?

You can buy both the Turbosound THL4 tops and TSW721 subwoofers directly at musicconcertevent.com. Two THL4 units are available at $1,500 for the pair and four TSW721 units at $2,100 for the set, with worldwide shipping.

Where to buy used Turbosound TSW721 subwoofers?

musicconcertevent.com has 4 used Turbosound TSW721 units available at $2,100 for the set with original components. Other platforms such as GearSource, SoundBroker, and Reverb carry used TSW721 listings periodically, typically at higher per-unit prices.

What amplifier do I need for the Turbosound TSW721?

The TSW721 requires an external amplifier delivering at least 600 watts RMS at the correct impedance, with a low-pass crossover filter set between 80 and 150Hz at 24dB/octave. Compatible Powersoft amplifiers are available through musicconcertevent.com for this exact system.

What amplifier do I need for the Turbosound THL4?

The THL4 is a bi-amped cabinet requiring separate amplifier channels for the LF and HF/MF sections. It is designed for use with a compatible loudspeaker management system such as the Turbosound LMS-D6 or LMS-A6. Multi-channel DSP amplifiers can handle this configuration.

Do the TSW721 and THL4 units in this listing include grills?

No. Grills and wheels are not included with any unit in this listing. This is stated clearly in the product description.

Can I buy just the subwoofers or just the tops?

The listing is structured as a pair for the THL4 tops and a set of 4 for the TSW721 subwoofers. Contact musicconcertevent.com directly if you have questions about purchasing individual units.

What is the maximum SPL of the Turbosound TSW721?

Based on confirmed product specifications, the Turbosound TSW721 is capable of a peak SPL of 137dB with a sensitivity of 101dB at 1W/1 meter.

Do you accept local pickup for this listing?

Local pickup is not available for this purchase. Sales are conducted online only. Local pickup by appointment is available exclusively for truckload volume purchases.

Is worldwide shipping available for this Turbosound system?

Yes. musicconcertevent.com ships worldwide. USA orders dispatch within 3 to 5 business days and international orders within 5 to 7 business days.