Сабвуферы — Klipsch R-121SW

The R-121SW is a 12-inch powered subwoofer from the Klipsch Reference series, introduced with the 2021 revision of the range together with the 10-inch R-101SW. It takes over from the R-120SW, whose 12-inch IMG woofer it swaps for a new cone material. Compared with the R-100SW, R-120SW and R-101SW, it has the lowest rated limit, the highest output figure and the heaviest cabinet.

Key specs that matter

The front baffle holds one 12-inch long-throw woofer whose cone is Thermoformed Crystalline Polymer (TCP) in a spun-copper color. Power comes from an all-digital amplifier with a rating of 200 W continuous and 400 W peak. The listed frequency range runs from 28 Hz to 120 Hz, with maximum acoustic output of 118 dB. A bass-reflex port vents out of the back of the enclosure. The cabinet is 421 mm tall, 406 mm wide and 500 mm deep, and it weighs 16.0 kg.

Engineering and use context

Klipsch presents TCP as a cone material that is light, rigid and densely packed, limiting breakup and distortion without degrading over the life of the driver. Next to the R-120SW it replaces, rated at 29 Hz and 116 dB, amplifier power is unchanged while extension and output both improve slightly, and the cabinet grows wider and deeper. The enclosure is built from reinforced 19 mm MDF, and a new internal bracing design is used to reduce panel vibration. The outer surface is a scratch-resistant black vinyl printed with a wood grain texture. The rear plate carries level, low-pass and 0 or 180 degree phase controls, with the low-pass dial topping out at 160 Hz. An auto power mode brings the amplifier on when signal appears and sends it to standby after 15 to 20 minutes of silence, while the On setting keeps it running all the time. A front LED turns green while the amplifier is working with signal.

Pairing

Hookup is at line level via two RCA sockets, L/LFE and R. Most receivers and processors will use one lead from the LFE output into the L/LFE socket, while a stereo amplifier or receiver with left and right preamp outputs can drive both sockets. When the upstream unit sets the crossover, Klipsch advises turning the sub's filter all the way up. Without receiver bass management, Klipsch gives 50 Hz to 90 Hz as a starting range for full-size floorstanders and 90 Hz to 150 Hz for small bookshelf or satellite mains.

Alternatives

The Klipsch R-101SW is the 10-inch TCP subwoofer of the same 2021 Reference generation, with 150 W continuous power and a 29.5 Hz lower limit.