Shure P6HW
A hardwired beltpack that outlived the wireless system it shipped alongside, and still turns up on arena stages two decades later.
Overview
The P6HW is the wired half of Shure's PSM 600 Personal Stereo Monitor line. It is a beltpack receiver fed by a 12-foot input cable ending in a 5-pin connector that fans out to two female XLRs. That cable is the whole idea. No RF dropouts, no frequency coordination, no antenna farm. You plug the monitor console straight into the pack and the performer hears what the console sends.
The spec sheet is respectable for its class. Shure rated the receiver's frequency response at 20 Hz to 20 kHz, total harmonic distortion at 0.18 (typical), and signal-to-noise at 85 dB. Those are wired-system numbers, and the P6HW was never the weak link in a monitor chain. A 15 dB pad handles hot console outputs. The pack has a stereo/MixMode switch, a high-frequency boost, and a limiter. Output is a ¼-inch TRS earpiece jack, and the whole thing runs on a 9V battery.
MixMode is the feature owners still talk about, and it is more than a pan knob. In normal stereo the pack passes a conventional two-channel mix to the earpieces. Engage MixMode and the system becomes dual-mono: two discrete signals, each assigned to a channel, with the pack's balance control setting the relative level between them. EQ (June 1997, p.34) covered this in its first look at the PSM600 family, describing how the former balance control becomes a relative-level control between two separate feeds. A performer can take a mix-minus-one in one ear and their own instrument or vocal in the other, then set their own level against the band without bothering the monitor engineer. That is the reason the P6HW stayed in rental inventories long after newer packs arrived.
The earpieces bundled with the system were Shure's E1 universals - a tube surrounded by a replaceable foam tip, with six pairs of tips in the box. Sensitivity was rated at 114 dB SPL/mW. Through an arrangement with Ultimate Ears/Westone, owners could have the E1s converted into permanent custom molds for roughly $80. The P6HWE1 package bundled the P6HW beltpack with the E1 universals, ten replacement foam tips, dual-XLR-to-LEMO interconnect cables, a 9V battery, a cleaning tool, and a plastic carrying case.
The P6HW did not launch alone. Shure built the PSM600 series as two packages: the hardwired P6HWE1 and the wireless P6TRE1, the latter pairing a P6T half-rackspace transmitter with a P6R beltpack receiver. The wireless system was rated at 50 Hz to 15 kHz, 0.8% THD, 80 dB S/N, and up to 300 feet of range across two transmission frequencies. The P6HW's 20 Hz - 20 kHz, 0.18% THD, 85 dB S/N figures are better than the RF version's, and the only thing you give up is the cable. Studio Sound (April 1997) noted that both versions shared the same three listening modes - mono, stereo, and MixMode - so the choice came down to mobility versus fidelity, not features.
The P6HW stayed on riders for a long time. A 2004 Mix (February 2004, p.79) piece on Tyler Stewart's drum setup lists a hardwired P6HW beltpack for his ear mix, augmented with a Meyer USW-IP subwoofer. That is a drummer choosing wired over wireless on a major tour. By 2006 it was still appearing in monitor rigs alongside the newer PSM700 wireless systems, and a 2012 Mix (July 2012, p.29) account of Magik*Magik's nine-piece setup describes every player on their own in-ear mix via Shure P6HW hardwired belt packs.
The P6HW has its caveats. It is a battery-hungry 9V device with a proprietary 5-pin input cable. Lose that cable and you have a paperweight, because the pack will not accept a standard XLR feed directly. The E1 foam tips are consumable, and the custom-mold conversion path depends on a third party that has changed hands over the years. None of this is disqualifying for a collector or a working engineer with a complete system, but it is the difference between a $40 flea-market find and a usable rig. Buyers should confirm the interconnect cable is present and test the MixMode switch and limiter before committing. Those are the parts that fail.
For anyone assembling a period-correct late-'90s monitor rig, the P6HW is the sensible anchor. It is quieter and cleaner than the wireless P6TRE1 it shipped beside, and it does everything the wireless pack does except cut the cord. Collectors note that complete P6HWE1 packages with the case, cables, and cleaning tool are worth seeking out over loose beltpacks. The accessories are the scarce part.
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