Tuesday, 22. May 2012

ER 4

ER 4


A tweeter with air-motion technology for the most demanding high-end applications. The diaphragm material provides for a neutral and detailed sound and its large diaphragm surface and low specific weight allow a high sound pressure without generating significant diaphragm amplitudes. Quick reaction and effortlessness are among the outstanding sound characteristics of this chassis.

Technical DataSymbolER 4
Nominal impedanceZn4 Ω
DC resistanceRe3.5 Ω
Resonance frequency 1 Wfr490 Hz
Suspension complianceCMS
Mechanical Q factorQMS
Electrical Q factorQES
Total Q factorQTS
Equivalent air volume of suspensionVAS
Mech. resistanceRMS
Total moving mass (incl. air mass)MMD0.66 g
Effective piston areaSD67 cm2
Voice coil-Ø
Voice coil former
Voice coil lenght
Voice coiul layers
Voice coil inductanceLE
Magnetic inductanceB
Force factorBLxI
Height of the gap
Magnet-Ø
Height of magnet ring
Mass of speaker0.58 kg
Characteristic sound pressure level SPL 1 W / 1 m88 dB
Rated power60* W
Frequency range3000 - 22000 Hz
Cone material

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