Rockford Fosgate T3S1-19 Power 19" T3 Single 1-Ohm Superwoofer

Rockford Fosgate T3S1-19 Power 19" T3 Single 1-Ohm Superwoofer 19 Inches, 1-Ohm Ready, Maximum Output

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Product Overview

The Rockford Fosgate T3S1-19 is a 19" single 1-ohm superwoofer from the flagship Power T3 series the 1-ohm stable counterpart to the T3S2-19, and equally the largest, most powerful subwoofer Rockford Fosgate has ever built. Sharing every technology, construction specification, and performance characteristic of the T3S2-19, the T3S1-19 is differentiated solely by its single 1-ohm voice coil configuration presenting a direct 1-ohm load to the amplifier for maximum power extraction from 1-ohm stable mono amplifiers without any wiring configuration required.

The complete T3 superwoofer technology stack is present: 19 inches of effective radiating cone area, dual gap multi-pole neodymium push/pull motor structure, single layer edge wound aluminium 5" voice coil with push/pull dual windings, three-layer glass fibre/Aramid honeycomb/glass fibre composite cone, injection-moulded foam surround with VAST technology, proprietary surround mechanical clamping ring, dual Nomex progressive spiders with integrated lead wires, aluminium die-cast basket with integrated heat sink fins and venting, and custom 4 AWG push spring terminals. Integrated die-cast aluminium trim ring included.

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Key Specifications

• Driver size: 19"
• Voice coil configuration: Single 1-ohm
• Motor structure: Dual gap multi-pole neodymium push/pull
• Voice coil: Single layer edge wound aluminium 5"; push/pull dual windings
• Cone: Three-layer glass fibre / Aramid honeycomb / glass fibre composite
• Dust cap: Aluminium
• Surround: Injection-moulded foam with VAST technology
• Surround retention: Proprietary mechanical clamping ring
• Spiders: Dual Nomex progressive with integrated lead wires
• Basket: Aluminium die-cast with integrated heat sink fins and venting
• Input terminals: Custom push spring insulated 4 AWG
• Trim ring: Integrated die-cast aluminium
• Power handling: Confirm with supplier
• Frequency response: Confirm with supplier
• Sensitivity: Confirm with supplier
• Xmax: Confirm with supplier
• Mounting depth: Confirm with supplier
• Cutout diameter: Confirm with supplier

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Features & Benefits

• Single 1-ohm voice coil direct 1-ohm load, maximum amplifier power: The defining differentiator from the T3S2-19. A single 1-ohm voice coil presents a direct 1-ohm load to any 1-ohm stable mono amplifier no parallel or series wiring required. For builds where a 1-ohm stable high-output mono amplifier is already specified, the T3S1-19 is the direct T3 superwoofer choice, extracting maximum rated power from the amplifier in the simplest possible wiring configuration.
• 19" effective radiating cone area the largest Rockford Fosgate has ever built: At 19 inches, the T3S1-19 produces more cone surface area than any subwoofer Rockford Fosgate has ever manufactured. More cone area means more air displaced per unit of excursion delivering deeper, higher-output bass from a single driver than any smaller-diameter subwoofer can match at equivalent excursion levels.
• Dual gap multi-pole neodymium push/pull motor structure: The push/pull motor configuration places voice coil windings in two magnetic gaps simultaneously one pushing and one pulling the cone effectively doubling the active motor force contribution relative to a single-gap design. Neodymium magnets provide the strongest magnetic field per unit mass available, enabling an exceptionally powerful and efficient motor assembly within the physical constraints of a 19" driver.
• Single layer edge wound aluminium 5" voice coil with push/pull dual windings: Edge winding positions the aluminium ribbon flat against the former with no air gaps between turns the most thermally efficient winding method available, allowing heat generated during high-power input to transfer rapidly to the former and dissipate. The 5" diameter voice coil provides a large surface area for heat dissipation and a long winding length for high motor force. Push/pull dual windings in the dual-gap motor work in concert to maximise driving force and linearity across the full excursion range.
• Three-layer glass fibre/Aramid honeycomb/glass fibre composite cone: A sandwich composite structure combining two stiff glass fibre skins with an Aramid (Kevlar-family) honeycomb core. The honeycomb core provides an extremely high stiffness-to-mass ratio the cone behaves as a true piston at the high excursion levels a 19" driver operates at, without the mass penalty of a solid composite. Aramid honeycomb is the same structural concept used in aerospace panel applications.
• Injection-moulded foam surround with VAST technology: The injection-moulded process produces a foam surround with consistent cell structure and density throughout, delivering the compliance uniformity of a precision rubber surround with the lighter mass of foam. VAST repositions the surround attachment to maximise effective radiating cone area across the full 19" diameter.
• Proprietary surround mechanical clamping ring: Physically secures the surround to the cone and basket simultaneously, providing a retention system beyond adhesive bonding alone. At the excursion levels and driving forces a 19" push/pull motor generates, the clamping ring ensures surround attachment integrity over the long term.
• Dual Nomex progressive spiders with integrated lead wires: Dual progressive spiders provide linear restoring force symmetry across the full, considerable excursion range of a 19" push/pull motor driver. Integrated lead wires eliminate the separate tinsel lead removing a common failure point in a driver engineered for extreme excursion.
• Aluminium die-cast basket with integrated heat sink fins and venting: Active heat dissipation from the motor and voice coil during sustained high-power use. At the power levels the T3S1-19 is designed to handle, passive thermal management at the basket level is a meaningful contributor to long-term reliability.
• Custom push spring insulated 4 AWG terminals: The heaviest terminal gauge in the Rockford Fosgate subwoofer range, appropriate for the extraordinary current demands of a 1-ohm superwoofer at high power input. 4 AWG push spring terminals allow fast, secure wiring for the cable gauges a system of this scale demands.
• Integrated die-cast aluminium trim ring: Provides a finished, professional installation appearance at the cutout. Integrated into the basket casting for a permanent, rigid finish.

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Technical Specs

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Compatible With

• The highest-output mono amplifiers available, stable at 1 ohm confirm recommended amplifier power with Rockford Fosgate T3S1-19 documentation
• Rockford Fosgate Power T3 series mono amplifiers (1-ohm stable)
• Custom ported and sealed enclosures designed specifically for the T3S1-19 enclosure volume and port specifications must be confirmed with Rockford Fosgate documentation before building
• Dedicated audio vehicles, show builds, and competition SPL installations with purpose-built enclosure bays
• Rockford Fosgate 4 AWG and heavy-gauge power wiring kits appropriate for high-current 1-ohm superwoofer installations
• High-capacity capacitors and upgraded electrical systems appropriate for the current demands of a 1-ohm superwoofer at rated power

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Frequently Asked Questions

What is the difference between the T3S1-19 and T3S2-19? Both are 19" T3 superwoofers with identical construction, motor technology, and performance specifications. The T3S1-19 has a single 1-ohm voice coil presenting a direct 1-ohm load, while the T3S2-19 has a single 2-ohm voice coil presenting a direct 2-ohm load. Choose the T3S1-19 when your amplifier is 1-ohm stable and 1-ohm wiring is the system target; choose the T3S2-19 for 2-ohm stable amplifier pairings.

What amplifier does the T3S1-19 require? The T3S1-19 presents a direct 1-ohm load and requires the highest-output mono amplifier available that is stable at 1 ohm. Confirm the recommended amplifier power rating with Rockford Fosgate's official T3S1-19 documentation or a qualified installer before specifying an amplifier power handling figures for this driver must be confirmed with the supplier before system design.

What is the push/pull motor structure and why does it matter for a 19" superwoofer? The dual gap push/pull motor places voice coil windings in two separate magnetic gaps simultaneously one gap's field pushes the cone while the other pulls, effectively doubling the active driving force compared to a single-gap design. For a 19" cone that requires significantly more motor force to control and drive than a standard subwoofer, the push/pull architecture is fundamental to achieving the output and linearity the T3S1-19 is designed to deliver.

What enclosure does the T3S1-19 require? The T3S1-19 requires a custom enclosure built specifically to Rockford Fosgate's published enclosure specifications for this driver. Standard subwoofer box calculators and generic designs are not appropriate for a 19" superwoofer with a push/pull motor. Confirm sealed and ported enclosure volumes and port tuning with Rockford Fosgate documentation or a qualified installer before building.

Is the T3S1-19 suitable for a street-driven Australian vehicle? The T3S1-19 is designed for dedicated audio vehicles, show builds, and competition SPL installations where a purpose-built enclosure bay and upgraded electrical system can be properly engineered. It can be installed in a street-driven vehicle with appropriate professional fabrication, but demands a complete purpose-designed system build professional installation and system design are strongly recommended.