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S250-N 250W 15" Powered Subwoofer

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Overview

High-end performance in a small, low-cost package.

The 20/20 S250 is designed for control rooms and project studios where space is at a premium, and complete control over system bass response and Dolby LFE (Low Frequency Effects) channel information is required. This sub is ideal for recording musicians who previously shied away from surround-sound monitoring due to high costs.

The S250 features a custom 15" long-throw woofer and 250W linear power amp, providing the high SPL low-frequency output necessary for multichannel production work. The bass management circuitry is identical as well, with 6 discrete, active, balanced inputs with pass-throughs, independent controls for the LFE and mains channels, and continuously variable phase control. This lets the listener compensate for phase differences that arise from subwoofer and mains-to-listener placement.

Signals appearing at the S250's LFE input are fed to the 250W linear amplifier through
a dedicated crossover. The other 5 inputs - designed to accommodate the 5 mains channels - are summed into an additional bass channel and fed to the amplifier via a second, continuously variable crossover. By setting the crossover to match the natural low frequency roll-off of the mains users can extend the overall LF response of their entire system well below the natural roll-off of the mains.

Features

  • Powerful output
  • Provides solid musical foundation
  • Perfect for the control room or project studio
Specs

S250-N 250W 15" Powered Subwoofer Specifications:

  • Low-frequency driver: long-throw, 15" coated paper cone with foam surround and high-temperature voice coil
  • Frequency response: 28Hz-120Hz, -3dB
  • Amplifier power: 250W, linear
  • LFE crossover: -3dB at 120Hz, 3rd order
  • Monitor blend crossover: -3dB, variable 30Hz-80Hz, third order
  • Maximum sound pressure level: 117dB peak @ 1 meter
  • Noise: >100dB below full output, 1kHz bandwidth
  • Inputs: one LFE channel, 5 mains monitor channels. All inputs 40kOhm balanced via gold combination XLR 1/4" connectors
  • Monitor input sensitivity: 1.1V at any monitor input produces full output with monitor group input sensitivity control at maximum.
  • LFE input sensitivity: 0.35V at any LFE input produces full output with LFE input sensitivity control at maximum
  • Pass-through outputs: one LFE channel pass-through, 5 mains monitor channel pass-throughs, all via male XLR connectors
  • Controls: LFE input sensitivity, polarity invert, phase delay, monitor group input sensitivity, monitor input disable, monitor-sub crossover tuning, mains
  • Power indicators: power on/overload LED
  • Polarity: positive signal at any + input produces outward LF cone displacement (with polarity invert off)
  • Cabinet: 3/4" vinyl-laminated MDF, internally insulated
  • Dimensions: 20-1/4"W x 17-1/2"H x 17"D
  • Weight: 64 lbs.
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