The SW-D2000 is a 12-inch powered subwoofer made in Guangzhou by Tonewinner Electronics, which has more than 30 years of experience building audio equipment. It pairs a long-excursion driver with a Class D amplifier and on-board DSP, and it can be adjusted through a touch screen on the top or a mobile app.
Key specs that matter
Amplifier output is rated at 400 W RMS into 3 ohm, with a peak of 2000 W at the same load, and the driver has a rated impedance of 3 ohm. The frequency range is given as 18 Hz to 240 Hz. The cabinet measures 426 mm wide, 440 mm high and 472 mm deep, and net weight is 23 kg. A dual-voltage supply covers 110-115 V and 220-230 V.
Engineering and use context
Tonewinner builds the driver with a high-strength cone and frame, a durable rubber surround and a dual magnet assembly, and its 50 mm voice coil is wound with four layers of OFC wire for heat resistance. The reflex port has a rectangular opening, which the maker says improves airflow and lowers unwanted resonance. The LCD panel is mounted upside down so that the settings can be read by looking down over the top of the cabinet, and four touch buttons change them. The DSP offers four modes - deep, normal, strong and user - plus a 7-band EQ, adjustable high-pass and low-pass cutoff with selectable slope and an on or off switch, a 0 or 180 degree phase selector and an adjustable input matching level. Auto standby puts the unit to sleep without signal and wakes it when signal returns, with an adjustable turn-on threshold. The Tonewinner subwoofer app mirrors these controls and handles wireless firmware updates. Connections comprise XLR balanced and RCA unbalanced inputs, and a sub output feeds a further unit. Circuit protection is built in. Packed for shipping, the subwoofer measures 530 x 542 x 570 mm and weighs 27 kg. The dual magnet is intended to cancel part of the stray flux and withstand long periods of hard driving, and the rubber surround is chosen to stay elastic at high excursion. Three of the modes are fixed presets, and the fourth holds user settings.
Pairing
The XLR input makes a direct balanced connection to AV processors and receivers that have one, and the pass-through output allows two SW-D2000 units to be chained without a splitter. Tonewinner receivers with three subwoofer outputs, such as the AT-2300PRO, can drive up to three of them independently.
Alternatives
The Tonewinner SW-D6000 is a larger model in the same range, using a 15-inch driver with an 800 W amplifier.