Electro-Voice FRi-152/64
A 70-pound birch-ply trapezoid rated to survive 1,400-watt peaks.
Overview
The FRi-152/64 is a two-way full-range loudspeaker built around a 15-inch LF transducer and a 2-inch/50 mm voice-coil HF compression driver. The HF section is loaded onto a constant-directivity horn with 60° horizontal by 40° vertical coverage. That fits the high-end install systems that Mix Magazine (June 2008, p.32) reported were being specified for new venues that year. That pattern is the "/64" in the model number. It tells you what the box is for: medium-throw coverage in rooms where the sound needs to point at rows of seats, not spray at a hemisphere. The manual lists stadiums, arenas, houses of worship, discos, live music clubs and gymnasiums. The horn is user-rotatable, so the same cabinet can go up horizontally or vertically and still put its 60×40 pattern where you aimed it.
The published spec sheet claims system frequency response varying no more than ±3 dB from 70 Hz to 15 kHz measured on axis, with -10 dB points at 42 Hz and 16 kHz. Sensitivity is quoted at 98 dB on axis at 1 meter with 1 watt of input — a number that puts it firmly in the efficient, horn-loaded camp. Full-power peak output is rated at 129 dB on axis at 1 meter. Power handling is where the FRi-152/64 starts to look serious: 350 watts long-term per EIA Standard in passive mode, with a 1,400-watt short-term peak rating. In biamp, the LF section carries the same 350/1,400 watt figures, while the HF compression driver is rated 60 watts long-term (AES) and 240 watts short-term peak. Nominal impedance is 8 ohms in passive, and 8/8 ohms in biamp for LF and HF respectively.
Read those numbers as a system. The 98 dB sensitivity means a modest amplifier gets you into loud territory well before the power ceiling. A 100-watt amp is already knocking on 118 dB at a meter on paper. The 1,400-watt peak figure is the headroom spec. The 60-watt AES long-term figure on the HF driver is the one to watch, since compression drivers are the part of a two-way that dies first, and EV rated this one conservatively.
The cabinet is trapezoidal, 28.0 inches high, 19.0 inches wide at the front narrowing to 7.3 inches at the back, 23.2 inches deep, with 15° per side of taper. The shape isn't cosmetic. It lets you array multiple boxes side by side with minimal interference between adjacent cabinets, and the manual notes the FRi series is dimensioned at 28 inches high specifically "creating a uniform look in arrays." Construction is 13-ply void-free cross-grain-laminated birch plywood with extensive internal bracing, finished in black acrylic. Net weight is 70 pounds (31.8 kg); shipping weight is 82 pounds (37.3 kg). That's a heavy box for a two-way, and the weight is the plywood and bracing. A 15-inch woofer moving that much air will find every resonance in a cheap cabinet.
The front is covered with a powder-coated perforated 16 GA steel grille. Input connection is a 2×2 barrier strip. The input panel is changeable from passive to biamp operation via a strip connector, and that's the detail installers care about most. You run it passive off a single amp channel, and later flip it to biamp without pulling the cabinet or ordering a different version.
Mounting hardware is generous: twelve 3/8-16 threaded mounting/suspension points, distributed as three each on top and bottom, two per side, and two on the rear. That lets you rig it in a lot of orientations without drilling a new hole. The manual also cites EV's RMD (Ring-Mode Decoupling) as the technology behind the system's vocal clarity and intelligibility. RMD is EV's approach to damping the mechanical resonances that smear midrange detail.
Coverage angle is specified at -6 dB for both the 60° horizontal and 40° vertical figures. Recommended high-pass frequency is 40 Hz with a 12 dB/octave minimum slope, which is useful if you're running subs and want to keep the 15 from working below its comfort zone. Finish options beyond the standard black acrylic are WH (white acrylic) and UN (unfinished). The part number for the standard black box is FRi-152/64-BLK. The LF section is the DL15BFH 15-inch woofer in a vented enclosure, and the HF section is the DH2t compression driver with a 2-inch titanium diaphragm on the constant-directivity horn. The system ships with a five-year warranty.
One thing that dates this manual in an interesting way: the contact block lists Telex Communications, Inc. as the parent, with the copyright line reading 4/2000 and the part number 535882-4.00. By the time this document was printed, EV was operating as part of Telex, with distribution addresses in the USA, Canada, Switzerland, Germany, France, Australia, Hong Kong, Japan, Singapore, and Mexico. That's a genuinely global install-market footprint, and it tells you who EV expected to buy the FRi-152/64 — not bedroom hobbyists, but system integrators specifying venues on four continents.
The FRi series as a family is built around that 28-inch height and the shared trapezoidal profile, which is what makes the array-uniformity claim work. A pair of FRi-152/64s stacked or flown side by side presents a coherent vertical line, and the rotatable horn lets you splay them without losing pattern control.
Maintenance-wise, the FRi-152/64 is about as serviceable as install loudspeakers get. The barrier strip input is field-rewireable, the passive-to-biamp conversion is a strip-connector change, the horn rotates without disassembly, and the 3/8-16 suspension points mean re-rigging is a matter of moving hardware rather than fabricating brackets. The five-year warranty is the manufacturer's own confidence statement, and for a box rated at 350 watts long-term continuous, it's not an unreasonable one. The realistic failure mode on any horn-loaded two-way is the HF driver, and the 60-watt AES rating gives you a clear ceiling to respect when you're setting limiters.
For anyone running a mid-sized venue — a 500-to-1,500-seat room, a club with a real stage, a gym with a speech-and-music program — the FRi-152/64 is the kind of speaker that gets installed once and then quietly does its job for a decade. It's not a lifestyle product and it was never marketed as one. It's a tool, and the spec sheet reads like one.
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