20/20 S250 System Subwoofer from Event Electronics
December 3, 2002
Event Electronics began shipping the 20/20 S250
System Subwoofer, a small-profile version of their flagship 20/20/15
System Subwoofer. The 20/20 S250 is designed for control rooms and project
studios where space is at a premium, but complete control over system bass
response and Dolby LFE (Low Frequency Effects) channel information is
required. The unit is aimed squarely at recording musicians who previously
shied away from surround-sound monitoring due to high costs---the 20/20 S250
is projected to have a street price of well under $500.
The new subwoofer features the same custom 15" long throw woofer and 250W
linear power amplifier as the 20/20/15, providing the high SPL low frequency
output necessary for multi-channel production work. The bass management
circuitry is identical as well, with six discrete, active, balanced inputs
with pass-throughs, independent controls for the LFE and mains channels, and
continuously variable phase control, which lets the listener compensate for
phase differences that arise from subwoofer/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 five inputs---designed to
accommodate the five 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 monitors, users can extend the overall low frequency
response of their entire system well below the natural roll-off of the
mains.
20/20 S250 System 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 BW
- Inputs: One LFE channel, five mains monitor channels. All inputs 40k ohm 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, five 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
- PowerIndicators: 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: 20.25" W x 17.5" H x 17" D
- Weight: 64lbs
Specifications subject to change without notice.
For more information, visit their web site at www.event1.com. |
