Electro-Voice HPT64 specifications General Product Description, Specifications

General Product Description

The Electro-Voice®model HPT64 is a wide-range, flat- front, constant-directivity super-tweeter horn. Both horizontal and vertical angles are controlled from 3 kHz to 20 kHz with unusual precision and adherence to the intended angle. Furthermore, excellent loading is maintained to 1,600 Hz. The flat-front design makes the HPT64 suitable for all modern boxed and clustered systems.

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 than 20 degrees from this angle over the frequency range 3 kHz to 20 kHz. It shall produce a vertical beamwidth of 40 degrees, deviating no more than 20 degrees from this angle over the frequency range 3 kHz to 20 kHz. In addition, it shall provide useful acoustic loading at all frequencies above 1.6 kHz.

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

Specifications:

HPT64

Constant-Directivity

Supertweeter Horn

laminated into the fiberglass portion of the horn.

The horn shall possess a throat of 2.36 cm (0.93in.) diameter and shall be provided with a 1-3/8"-18 threaded hole for the mounting of a compression driver. The horn shall be 13.3 cm (5.3 in.) high, 13.3 cm (5.3 in.) wide, and 10.4 cm (4.1 in.) long. It shall weigh no more than 1.8 kg (4.0 lb).

The horn shall be the Electro-Voice model HPT64 constant-directivity horn.

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° (+20°, -10°) - (-6 dB 3 kHz to 20 kHz)

Vertical Beamwidth:

40° (+20°, -10°) - (-6 dB, 4 kHz to 20 kHz)

Directivity Factor Rθ (Q):

15.8 (average 3 kHz to 20 kHz)

Directivity Index Di:

12.0 dB (+1.2, -1.6 dB)

10 log Rθ, (average 3 kHz to 20 kHz)

Lowest Recommended Crossover Frequency:

1.6 kHz

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:

1-3/8"-18 thread allows the attachment of the DH2010A or DH2T drivers

Recommended Driver:

DH2010A or DH2T

Weight:

1.8 kg (4.0 lb)