General Product Description

The Electro-Voice®model HP64 is a wide-range, flat-front, high-frequency, constant-directivity horn. The horizontal angle is controlled over a frequency range of 1.7 kHz to 20 kHz and the vertical angle is controlled from 1.8 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 HP64 suitable for all modern boxed and clustered systems. A special vaned waveguide throat detail gives the HP64 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 60 degrees, deviating no more that 30 degrees from this angle over the frequency range 2,000 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 1,600 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

HP64

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 27.9 cm (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 HP64 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:

60° (+30°, -10°) (-6 dB 1.7 kHz to 20 kHz)

Vertical Beamwidth:

40° (+20°, -10°) (-6 dB, 1.8 kHz to 20 kHz)

Directivity Factor Rθ (Q):

18.1 (average 1.6 kHz to 20 kHz)

Directivity Index Di:

12.6 dB (+0.9, -2.9 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 1/4" bolts on a 4" diameter bolt circle. (See Figure 1).

Recommended Driver:

DH1A, DH2A

Weight:

2.5 kg (4.5 lb)

1000 Hz

HP64 specifications

Electro-Voice has long been recognized as a leader in professional audio solutions, and the HP64 is a remarkable addition to its lineup of high-performance microphones. Designed primarily for live sound applications, the HP64 offers exceptional audio quality and durability, making it a favorite among sound engineers and performers alike.

One of the standout features of the HP64 is its high-output dynamic capsule, which delivers clear and detailed sound reproduction across a wide frequency range. This microphone is particularly well-suited for capturing vocals, as it effectively reproduces the nuances and tonal characteristics of the human voice. The HP64 also showcases excellent off-axis rejection, allowing it to isolate the intended sound source while minimizing background noise and feedback.

The build quality of the HP64 is another key characteristic that sets it apart. Constructed with rugged materials, this microphone is designed to withstand the rigors of live performances and studio sessions. Its robust metal housing ensures durability, while the heavy-duty grille protects the capsule from impact and moisture, making it a reliable choice for vocalists and speakers in various environments.

In terms of technology, the HP64 incorporates advanced neodymium magnet technology, which contributes to its high sensitivity and output level. This not only enhances the overall sound quality but also allows for greater versatility in different performance settings. The microphone's cardioid polar pattern further enhances its performance, focusing on sound directly in front of it and rejecting sound from the sides and rear, which is particularly useful in noisy environments.

Another notable feature is the HP64’s ergonomic design. The microphone is lightweight and easy to handle, ensuring that performers can comfortably use it for extended periods without fatigue. Its user-friendly interface makes it suitable for both seasoned professionals and newcomers, providing reliable performance right out of the box.

Overall, the Electro-Voice HP64 stands out due to its impressive audio fidelity, robust construction, and innovative technologies. Whether on stage, in the studio, or at events, the HP64 delivers exceptional results, making it a solid investment for anyone looking for a quality vocal microphone. With its combination of performance and reliability, the HP64 is sure to impress anyone who values superior sound quality in their audio equipment.