Electro-Voice 405-8H Specifications
Text of the manual
eneral Product Description
he EV (Electro-Voice®) Model 405-8H and 405-4T
udspeakers are compact 4" speakers that provide the
most in performance obtainable from speakers of this size.
ear, intelligible speech and good music reproduction are
nsured because of the extended 60 - 15,000 Hz range.
he loudspeaker has an 8-ohm voice coil. The model 405-4T
as a factory mounted matching transformer allowing the
udspeaker to be run from 70.7 V or 100 V transmission
nes, drawing 0.5, 1, 2, or 4 watts.
hese quality loudspeakers are designed for continuous,
ouble-free service. The die cast aluminum frame houses
magnetic structure fabricated of heavy gauge steel. The
mall size of the speakers allows either front or rear
ounting in walls, partitions, ceilings, and into volumes as
w as 0.1 cubic feet.
ower Rating: ............. 16 watts continuous pink noise (above 50 Hz)
equency Response: ...................................................60 - 15,000 Hz
essure Sensitivity: ........................................................... 90 dB SPL
easured at one meter on axis with 1 watt input of pink noise, band-limited
m 500 - 3000 Hz (Ref.: 20 µPa)
aximum SPL: .................................................. 102 dB for 16W @ 1M
pedance: .................................................................................8 ohms
.7/100 Volt Taps: ................................ 0.5, 1, 2, 4 watts (405-4T only)
sertion Loss: ............................................ 1.0 dB max. (405-4T only)
ansformer Frequency Response: ............... ±1 dB, 100 - 10,000 Hz
........................................................................................ (405-4T only)
ominal Free-Air Cone Resonance: ........................................ 120 Hz
ominal Distribution Pattern: ......................................................... 90°
istribution Pattern With Polar to Planer Correction:
107' at 2 kHz 69' at 4 kHz
oice Coil Diameter: .................................................. 25.4 mm (1.0 in.)
agnet Structure:
Magnet Type: ....................................................................... Ferrite
Magnet Weight: ............................................................ 9.4 ounces
Flux Density: .................................................................. 1.05 tesla
onstruction:
Frame (Basket):.......... Structurally reinforced die-cast aluminum
Cone: .......................................................................... Molded fiber
one Suspension: ............................. High-compliance foam surround
pecifications:
Voice Coil: ................................................................................ Copper
Voice Coil Support Material: ............................................. Kapton®**
Cone Excursion: ........................................ 0.125" max. peak to peak
Terminals:
Speaker : ............................... 5.2 mm (0.205 in.) spade lug type
Transformer: .................................................................... Pigtails
Mounting Data:
Baffle Opening:
96.8 mm (3.812 in.) diameter (rear mounted)
104.8 mm (4.125 in.) diameter (front mounted)
Mounting Bolt Centers:
4 equally spaced slots 90° apart on 120.7 mm (4.75 in.) diameter
circle
Dimensions:
Diameter: ................................................... 134.9 mm (5.312 in.)
405-8H: ...............................................54.0 mm (2.125 in.) depth
405-4T: .............................................103.2 mm (4.063 in.) depth
Weight:
405-8H: ........................................................ 2 lbs 1 oz. (0.94 kg)
405-4T: .......................................................... 2 lbs 9 oz. (1.2 kg)
Color: .......................................................................................... Black
** Kapton® is a registered trademark of DuPont.
Figure 1, One-Third-Octave Polar Response Charts
Measurements were made in a 1.5 ft3 closed enclosure.
Wiring Diagam
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