Altec Lansing 418-8H User Manual
418-8H
The ALTEC 418-8H Musical Instrument Loudspeaker is a rugged, 15” loudspeaker designed
for use in musical entertainment systems of moderate size and coverage area where true
high-fidelity reproduction must be combined with high power output.
The 418-8H has a heavy permanent magnet, a structurally reinforced die-cast aluminum
frame, a 3"-diameter edge-wound voice coil of copper ribbon and a cone suspension having
exceptional compliance. It is sealed against dust and dirt.
The smooth response and excellent linearity of the 418-8H loudspeaker is achieved by strict
adherence to precision design and manufacturing tolerances. The axial retention of the
voice coil in a magnetic field, uniform over the full excursion, ensures clarity of music
reproduction at high power levels. The low cone resonance, when the speaker is mounted
in a suitable enclosure, virtually eliminates all 'doubling' or self-generation of unwanted
harmonic components.
The 418-8H has a continuous power rating of 150 watts and a frequency response from 45
to 8000 Hz. Its design provides high efficiency, high linearity, low distortion, wide range
and optimum cone resonance.
A DIVISION or ALTEC CORPORATION
1515 S. Manchester Ave., Anaheim, Calif. 92803
ALTK 418-8И !л^крвЛ»
SPECIFICATIONS
Type:
Power Rating:
Frequency Response:
Pressure Sensitivity:
Nominal Impedance:
Nominal Free-Air Cone
Resonance:
Voice Coil Diameter:
Magnetic Assembly —
Magnet Weight:
Musical instrument loudspeaker
For sound system use with amplifiers having continuous
power rating of up to 150 watts with program material
45 Hz to 8000 Hz (see Figure 1)
99 dB SPL with 1 watt input of band-limited pink noise from
100 Hz to 10 kHz measured on axis 4' from cone (Ref.:
0.0002 dyne/cm2). Equal to EIA rating of 52 dB SPL meassured on axis 30' from cone with 1 milliwatt input.
98 dB SPL with 1 watt input of band-limited pink noise from
100 to 1000 Hz measured on axis 4'from cone (Ref.;0.0002
dyne/cm^)
8 ohms (other impedances available in production quantities)
55 Hz
3"
2.4 pounds
Assembly Weight:
Magnet Type:
Flux Density:
Construction —
Frame (Basket):
Cone:
Cone Suspension:
Voice Coil:
Voice Coil Support
Material:
Maximum Cone Excursion:
Diameter:
Weight:
Mounting Data —
10.5 pounds
Alnico V
13,000 gauss
Structurally reinforced die-cast aluminum
Molded fiber
High-compliance cloth surround with mechanical resistance
Edge-wound copper ribbon
Aluminum with *Kapton® insulation
1/2"
15-5/16" (38.89 cm)
14 pounds, 6 ounces (6.53 kg)
Mounting Hole Diameter:
Mounting Bolt Centers:
Loudspeaker Depth:
13-5/8" (34.61 cm) (may be either front or rear mounted)
8holesequallyspacedon 14-9/16" (36.99 cm) diameter circle
7" (17.78 cm)
*Kapton® is a registered trademark of DuPont.
Loading...