Toa HFD-260-8/16 Specifications

COMPRESSION DRIVER
DESCRIPTION
The TOA HFD-260-8/16 compression driver, in 8-ohm and
16-ohm versions, is designed for use in high-level applica-
tions where sound systems of the highest quality are
required. With a throat diameter of 2 in. (49mm), the TOA
HFD-260-8/16 is intended for use with the TOA LE Series
constant directivity horns, and it will provide highly efficient
sound reproduction and a smooth frequency response
from 500Hz to 18kHz. The voice coil of the TOA HFD-260-
8/16 compression driver consists of a 2.83 in. (72mm)
edge-wound, copper-clad aluminum ribbon coupled to a
50-micron hard duralumin diaphragm. The diaphragm
voice coil assembly can be replaced in the field without
having to disassemble the entire driver. The diaphragm
voice coil employs self-aligning dowels to center it
perfectly in the voice coil gap. The gap has a flux density
of 22,000 gauss, generated by a 7.1 Ibs. (3.2kg) ferrite
magnet. A machined phasing plug with three acoustic
slots serves as the pole piece, providing the proper phase
relationship between the sound emanating from the center
and that coming from the edge of the diaphragm/voice coil
assembly.
TOA PROFESSIONAL SOUND SYSTEM
HFD-260-8/16
FEATURES
1. Smooth frequency response from 500Hz to 18kHz.
2. Flux density of 22,000 gauss generated by a 7.1 Ibs.
(3.2kg) magnet.
3. Highly efficient sound pressure level of 111dB/W/m
with LE-940 horn.
4. High power capacity: 50 watts continuous pink noise
(500Hz to 20kHz, test duration: 24 hours).
5. Throat diameter of 2 in. (49mm).
6. Edge-wound, copper-clad aluminum ribbon voice coil.
7. 50-micron duralumin diaphragm.
8. Diaphragm voice coil can be easily replaced in the field.