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PowerBass 12 inch thin amplified subwoofer enclosure in black finish

PowerBass

PowerBass PSAWB121T 12" Thin Amplified Loaded Enclosure 400W

SKU CH-6NBZ-SXBDZ

A slim 12-inch amplified subwoofer enclosure delivers 200 watts RMS in a vented bass-reflex design for deep low-frequency output

  • Speaker unit size6.5 in (16.5 cm)
  • Slim 12" enclosure fits tight spaces without sacrificing output
  • 200 W RMS amplifier delivers consistent low-frequency power
  • Vented bass-reflex port tuned for deep, resonant bass
  • Woofer engineered to the box for tighter transient response
  • Single 4 Ω loaded system simplifies installation and wiring

Compact powered subwoofer for tight spaces

The PowerBass PSAWB121T is a 12 inch thin amplified loaded enclosure built for vehicles where boot space is limited. Its slim profile fits behind seats or in shallow cargo areas while the integrated amplifier removes the need for a separate amp and wiring kit. This all-in-one design suits owners who want noticeable low-end reinforcement without a complex installation.

Passive cooling keeps operation quiet

The sealed amplifier chassis dissipates heat through its metal housing so no internal fan is required, keeping the cabin silent during low-volume listening. Power draw stays modest thanks to the efficient PWM amplifier topology, allowing the system to run from the factory electrical system in most daily-driven cars. Thermal protection circuits prevent shutdown during extended high-output sessions.

Wired remote and high-level inputs simplify

A dash-mounted bass level controller lets the driver adjust output without reaching into the boot. High-level speaker inputs accept signal directly from factory head-unit outputs, eliminating the need for line-output converters or RCA cables. The package includes mounting hardware and a fused power lead so the installer can complete the job with basic hand tools.

How it compares

Measured against everything we stock in Car Stereo Speakers, at today’s prices. Recalculated every night.

Price $273.99
Pricier than about 76% of the 379 comparable items (median $104.99).

Specifications

Audio & video
Speaker unit size6.5 in (16.5 cm)

Questions about this item

How do I wire the 4-ohm PSAWB121T to my head unit and where is the gain set?

Connect the high-level speaker inputs or RCA cables to your head unit, run a fused 12 V power lead to the battery, ground the chassis nearby, then adjust the onboard gain so the 200 W RMS amplifier stays clean at your listening volume.

What upkeep does the slim vented enclosure and PWM amplifier need over time?

Check the slotted port for debris, verify the power and ground terminals stay tight, and inspect the cone surround for cracking; the PWM amp has no user-serviceable parts, so keep ventilation clear and avoid clipping.

At what point does the 200 W RMS limit appear during extended heavy bass?

The amplifier will engage its thermal protection once the 200 W RMS continuous rating is exceeded for a prolonged period, causing output to drop until the PWM module cools down.

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