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Powerwerks built the PW4EX as a four-channel MIC/LINE mixer with a mono output, positioned as an expansion unit within the Powerwerks tower system. It functioned both as a standalone mixer and as a satellite unit that could be chained to other Powerlink-equipped Powerwerks products to increase the total number of available channels.
Each of the four inputs accepted a balanced XLR microphone connection or an unbalanced 1/4" line-level connection at a nominal level of -10 dBV. All XLR inputs carried phantom power at 17 V, current-limited to 5 mA. Each channel provided independent volume control along with a two-band EQ: a high shelf operating at 2.6 kHz and above (±2.0 dB at 8.0 kHz) and a low shelf operating at 0.9 kHz and below (±9.8 dB at 63 Hz). The unit measured a signal-to-noise ratio of 74 dB with all controls at maximum undipped level across a 22 kHz bandwidth, and a system gain of 21 dB at 1 kHz from line input to master output. Frequency response ran from 43 Hz to 20 kHz with channel volume knobs set at three-quarters full scale. The Powerlink IN jack accepted a pre-master signal from another PW4EX or a compatible PW50, PW100, or PW150 unit, while the Powerlink OUT exported a pre-master signal to those same products. Main output was available via XLR and 1/4". Power was supplied by an included 18 V DC wall adapter.
Owners requiring service, recalibration, or help sourcing a compatible replacement wall adapter or Powerlink-compatible unit should consult a qualified audio technician.
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Since 2007
