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JL Audio ACS112LG-TW1 Active Enclosed Subwoofer Built-In 400W Class D Amplifier

JL Audio ACS112LG-TW1 Active Enclosed Subwoofer Built-In 400W Class D Amplifier

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SKU: JLA-ACS112LGTW1
GTIN: 0699440933353
MPN: 010-03255-00
  • 12TW1 active subwoofer with built-in 400W Class D amp (sealed box)
  • Low-profile 168 mm depth, black carpet finish, steel mesh grille
  • RCA & high-level inputs with auto turn-on for easy install
  • Low-pass filter (50–200 Hz) and polarity control
  • Nominal impedance 0.25 Ω, recommended 8 AWG wiring, 30A fuse

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Our Price:
£699.99
RRP:   £873.99
Our Price:
Now: £583.32
RRP:   £728.32

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Active Subwoofer

Amplified Subwoofer System with Single 12TW1-0.25 Subwoofer, Built-In 400W Class D Amplifier, Black Carpet - Sealed Enclosure.

In PowerWedge+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this subwoofer system employs our exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency.

Harnessing the performance and insanely small box requirements of the TW1 Subwoofer, this subwoofer system is designed to deliver amazing sub-bass from an enclosure that is only 6.625 in. (168 mm) deep. Its low-profile enclosure design has been carefully engineered to the optimum sealed enclosure alignment for the 12TW1 driver and has been fine-tuned through extensive real-world listening.

Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space.

Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage.


  • Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)
  • Nominal Impedance: 0.25 Ω
  • Continuous Power Handling (RMS): Built-in amplifier 400 W @ 0.25 Ω
  • System Nominal Impedance: 0.25 Ω
  • Input Voltage Range @ RCA Inputs: 70 mV - 1.40 V RMS
  • Input Voltage Range @ High-Level Inputs: 280 mV - 5.4 V RMS
  • Recommended Copper Power / Ground Wire Gauge: 8 AWG wire
  • Fuse Rating: 30 A (ATO or ATC)
  • Enclosure Type: Sealed
  • Finish: Black carpet
  • Grille Included: Black Steel Mesh
  • Construction: CNC-Cut High-Grade MDF

UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).


Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).


Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.


Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.


More information (including international delivery on our Delivery Information page.

Description

Active Subwoofer

Amplified Subwoofer System with Single 12TW1-0.25 Subwoofer, Built-In 400W Class D Amplifier, Black Carpet - Sealed Enclosure.

In PowerWedge+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this subwoofer system employs our exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency.

Harnessing the performance and insanely small box requirements of the TW1 Subwoofer, this subwoofer system is designed to deliver amazing sub-bass from an enclosure that is only 6.625 in. (168 mm) deep. Its low-profile enclosure design has been carefully engineered to the optimum sealed enclosure alignment for the 12TW1 driver and has been fine-tuned through extensive real-world listening.

Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space.

Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage.


  • Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)
  • Nominal Impedance: 0.25 Ω
  • Continuous Power Handling (RMS): Built-in amplifier 400 W @ 0.25 Ω
  • System Nominal Impedance: 0.25 Ω
  • Input Voltage Range @ RCA Inputs: 70 mV - 1.40 V RMS
  • Input Voltage Range @ High-Level Inputs: 280 mV - 5.4 V RMS
  • Recommended Copper Power / Ground Wire Gauge: 8 AWG wire
  • Fuse Rating: 30 A (ATO or ATC)
  • Enclosure Type: Sealed
  • Finish: Black carpet
  • Grille Included: Black Steel Mesh
  • Construction: CNC-Cut High-Grade MDF

Active Subwoofer

Amplified Subwoofer System with Single 12TW1-0.25 Subwoofer, Built-In 400W Class D Amplifier, Black Carpet - Sealed Enclosure.

In PowerWedge+™ systems, the power is built right into the subwoofer system. Housing a proprietary Class D amplifier, this subwoofer system employs our exclusive DCD™ amplifier technology to extract maximum output from its specially engineered, ultra low-impedance TW1 driver. By combining direct power conversion with an ultra-high current output section, DCD™ amplifiers are free of conventional switching power supplies, enabling them to generate remarkable power with unprecedented efficiency.

Harnessing the performance and insanely small box requirements of the TW1 Subwoofer, this subwoofer system is designed to deliver amazing sub-bass from an enclosure that is only 6.625 in. (168 mm) deep. Its low-profile enclosure design has been carefully engineered to the optimum sealed enclosure alignment for the 12TW1 driver and has been fine-tuned through extensive real-world listening.

Integration to OEM and aftermarket head units is a snap thanks to a variety of input options and automatic turn-on capability (via signal sensing or DC offset sensing). Also included is a variable frequency low-pass filter (50-200 Hz), along with output polarity control switch. Adding an optional RBC-1 remote level control (sold separately) lets you control subwoofer levels directly from the driver’s seat. A quick-disconnect power connector makes it easy to remove the subwoofer when you need the extra space.

Note: DCD™ amplified systems use very specific components. Never use a DCD™ amplifier or its companion subwoofer(s) with incompatible, non-DCD™ products. Doing so will void the warranty and may cause severe damage.


  • Amplifier power: Built-in DCD™ Class D amplifier (400 W @ 0.25 Ω)
  • Nominal Impedance: 0.25 Ω
  • Continuous Power Handling (RMS): Built-in amplifier 400 W @ 0.25 Ω
  • System Nominal Impedance: 0.25 Ω
  • Input Voltage Range @ RCA Inputs: 70 mV - 1.40 V RMS
  • Input Voltage Range @ High-Level Inputs: 280 mV - 5.4 V RMS
  • Recommended Copper Power / Ground Wire Gauge: 8 AWG wire
  • Fuse Rating: 30 A (ATO or ATC)
  • Enclosure Type: Sealed
  • Finish: Black carpet
  • Grille Included: Black Steel Mesh
  • Construction: CNC-Cut High-Grade MDF
Shipping

UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).


Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).


Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.


Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.


More information (including international delivery on our Delivery Information page.

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