General Product Description

The Electro-Voice®model HP94 is a wide-range, flat-front, high-frequency, constant-directivity horn. The horizontal angle is controlled over a frequency range of 1.2 kHz to 20 kHz and the vertical angle is controlled from 2.1 kHz to 20 kHz, both with unusual precision and adherence to the intended angle. Furthermore, excellent loading is maintained to a low frequency of 1000 Hz.

The flat-front design makes the HP94 suitable for all modern boxed and clustered systems. A special vaned waveguide throat detail gives the HP94 unusually good high-frequency control, vertically, when compared to similar 2-inch-throat horn designs.

Architects’ and Engineers’ Specifications

The horn shall be of the constant-directivity type. It shall produce a horizontal beamwidth (6 dB-down angle) of 90 degrees, deviating no more that 30 degrees from this angle over the frequency range 1,200 to 20,000 Hz. It shall produce a vertical beamwidth of 40 degrees, deviating no more than 20 degrees from this angle over the frequency range 2,100 to 20,000 Hz. In addition, it shall provide useful acoustic loading at all frequencies above 1000 Hz.

The horn shall be of hybrid fiberglass-and-zinc construction. The driver-mounting flange and initial throat section shall be constructed of die-cast zinc and

HP94

TransPlanar

Constant-Directivity

Horn

shall be integrally laminated into the fiberglass portion of the horn.

The horn shall possess a throat of 4.92-cm (1.94in.) diameter and its flange shall be provided with four ¼-20 clearance bolt holes on a 10.2 cm (4.0 in.) circle for the mounting of the compression driver. The horn shall be

27.9cm (11.0 in.) high, 22.2 cm (8.8 in.) wide, and

22.2cm (8.7 in.) long. It shall weigh no more than 2.5 kg (4.5 lb).

The horn shall be the Electro-Voice model HP94 constant-directivity horn.

Specifications:

The following specifications are in accordance with or exceed the AES Recommended Practice for Specification of Loudspeaker Components Used in Professional Audio and Sound Reinforcement (AES2-1984; ANSI S4.26-1984).

Horizontal Beamwidth:

90° (+30°, -10°) (-6 dB 1.2 kHz to 20 kHz)

Vertical Beamwidth:

40° (+20°, -10°) (-6 dB, 2.1 kHz to 20 kHz)

Directivity Factor Rθ (Q):

18.1 (average 1.6 kHz to 20 kHz)

Directivity Index Di:

10.1 dB (+1.9, -0.9 dB)

10 log Rθ, (average 1.6 kHz to 20 kHz)

Lowest Recommended Crossover Frequency:

Construction:

Polyester resin and glass-fiber laminate integrally molded to a die-cast zinc throat section. This hybrid construction assures a rigid driver mount, accurate, loss-free throat-wave transmission and low total weight compared to horns of similar size.

Mechanical Connection of Driver:

Bolt on; standard 2" diameter throat, 5" diameter mounting flange and four clearance holes for ¼" bolts on a 4" diameter bolt circle.

Recommended Driver:

DH1A, DH2A

Weight:

2.5 kg (4.5 lb)

1000 Hz

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Electro-Voice HP94 specifications General Product Description, Architects’ and Engineers’ Specifications

HP94 specifications

The Electro-Voice HP94 is a versatile and high-performance microphone that has made its mark in both live sound and studio environments. Known for its exceptional sound quality and robust construction, the HP94 is designed to meet the demands of professional audio engineers and musicians alike.

One of the standout features of the HP94 is its hypercardioid pickup pattern. This design allows it to capture sound directly from the front while minimizing ambient noise and feedback from the sides and rear. This characteristic makes it particularly suitable for live performances where controlling sound quality is paramount. The hypercardioid pattern also aids in isolating vocals or instruments, ensuring clear and focused audio reproduction.

The HP94 utilizes advanced microphone technology, including a high-performance transducer that delivers a wide frequency response. It provides a rich and natural sound character, enhancing vocal clarity and presence while also accommodating a variety of musical styles and instruments. The frequency response spans from 30 Hz to 20 kHz, ensuring that both low and high-end frequencies are reproduced accurately.

In terms of build quality, the HP94 is constructed with durable materials that can withstand the rigors of frequent use. Its rugged metal chassis not only adds to its longevity but also helps minimize handling noise, allowing for clean recordings even in dynamic performance situations. The microphone is designed to perform reliably in various environments, making it a trusted choice for touring musicians and sound engineers.

Another notable feature is the internal shock mount system, which reduces handling noise and unwanted vibrations. This ensures that only the desired sound is captured, contributing to a higher quality recording or performance. Additionally, the HP94 is equipped with a pop filter that minimizes plosive sounds, providing clean vocal recordings without distortion.

The Electro-Voice HP94 is compatible with various audio equipment, making it a flexible choice for different setups. Whether used with a PA system, recording interface, or mixing console, the microphone’s performance remains consistent and top-notch.

In summary, the Electro-Voice HP94 combines advanced technology, durable construction, and professional-grade sound quality, making it an excellent choice for both live performances and studio recordings. Its hypercardioid pickup pattern, wide frequency response, and internal shock mount system collectively contribute to its capability as a trusted and effective microphone for any audio professional.