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The BX5a refines our highly acclaimed BX5
near-field reference monitors, renowned for packing a lot of punch for
their size. Our new 5” low-frequency driver cones are crafted from
Kevlar, an extremely resilient material typically found in much more
expensive monitors. Curved cone design coupled with high-temperature
voice coils and damped rubber surrounds deliver incredible fidelity and
durability. The 1” high-frequency drivers’ magnetically shielded
natural silk domes produce crisp top end while still being gentle on
the ears. Integral cabinet and electronic engineering work together to
deliver improved bass response. 70-watt bi-amped power and expertly
tuned crossovers round out an incredible sounding pair of reference
monitors with a footprint small enough to fit just about anywhere.
M-Audio's new BX5a employs Kevlar for low-frequency driver
construction. The same material used in bulletproof vests, Kevlar's
high resilience makes it ideal for use in speaker cones—although it is
typically reserved for monitors with higher price tags than the BX5a.
Needless to say, Kevlar represents a significant improvement over the
polypropylene and paper used in most monitors for this price.Kevlar Drivers 
Magnetically shielded for desktop use
Unchecked,
the electromagnetic waves emanating from your speakers can wreak havoc
with your computer's video monitor or a nearby TV. The BX5a is
magnetically shielded so that all of your electronic equipment can
coexist on your desktop without interference.
Bi-amplified efficiency Active
monitors have a distinct advantage over unpowered monitors, in that the
built-in power amps are designed specifically to work with the drivers
and crossovers in a tuned system. Bi-amplification further refines the
concept by dedicating separate power amps to the highs and lows.
Combined with a finely tuned crossover, this design insures that both
the high- and low-frequency drivers are asked to deliver only the
frequencies they are more efficient at reproducing. Specifications
 | | frequency response: | 56Hz-22kHz | | | crossover frequency: | 3kHz | | | crossover filter network: | 4th-order Linkwitz-Riley | | | amplifier type: | class AB monolithic | | | low-frequency amplifier power: | 40 watts RMS into 4 ohms (woofer) at 0.5% (-46 dB) THD | | | high-frequency amplifier power: | 30 watts RMS into 6 ohms (tweeter) at 0.5% (-46 dB) THD | | | signal-to-noise: | > 100dB (typical A-weighted) | | | polarity: | positive signal at + input produces outward LF cone displacement | | | input impedance: | 20k Ohms balanced, 10k Ohms unbalanced | | | input sensitivity: | 85mV pink noise input produces 90dBA output SPL at one meter with volume control at maximum | | | power: | factory programmed for either 115V ~50/60Hz, 230V~50/60Hz or 100V~50/60Hz; | | | protection: | RF interference, output current limiting, over temperature, turn-on/off transient, subsonic filter, external mains fuse | | | cabinet: | vinyl laminated MDF (enclosure natural Helmholtz resonance frequency: 40 Hz) | | | size: | 250 mm (H) x 176 mm (W) x 200 mm (D) | | | weight: | 5.0 kg/unit - 11.02 lbs/unit |
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