Era Design 4 Speaker System, AudioControl Maestro M2 Pre/Pro, and AudioControl Savoy Amplifier HT Labs Measures: Era Design 4 Speaker System

HT Labs Measures: Era Design 4 Speaker System

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Satellite Sensitivity: 82.5 dB from 500 Hz to 2 kHz

Center Sensitivity: 87 dB from 500 Hz to 2 kHz

This graph shows the quasi-anechoic (employing close-miking of all woofers) frequency response of the Design 4 satellite (purple trace), Sub 10 subwoofer (blue trace), and Design 4 LCR center channel (green trace). All passive loudspeakers were measured with grilles at a distance of 1 meter with a 2.83-volt input and scaled for display purposes.

The Design 4's listening-window response (a five-point average of axial and +/–15-degree horizontal and vertical responses) measures +1.73/–2.44 decibels from 200 hertz to 10 kilohertz. The –3-dB point is at 90 Hz, and the –6-dB point is at 72 Hz. Impedance reaches a minimum of 6.73 ohms at 203 Hz and a phase angle of –57.21 degrees at 120 Hz.

The Design 4 LCR's listening-window response measures +2.04/–1.86 dB from 200 Hz to 10 kHz. An average of axial and +/–15-degree horizontal responses measures +1.96/–2.82 dB from 200 Hz to 10 kHz. The –3-dB point is at 88 Hz, and the –6-dB point is at 69 Hz. Impedance reaches a minimum of 4.48 ohms at 244 Hz and a phase angle of –55.21 degrees at 136 Hz.

The Sub 10's close-miked response, normalized to the level at 80 Hz, indicates that the lower –3-dB point is at 29 Hz and the –6-dB point is at 25 Hz. The upper –3-dB point is at 104 Hz with the low-pass switch set to off and the EQ switch set to on.—MJP

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COMMENTS
Mocha6ft3's picture

I remember reading about this fine power amp in one of your issues i bought in a convience store a few years ago. After looking at the review i was sure i would go with seperates. Reading about the class H amp plus there's very little heat, peeked my interest. Plus, the Savoy looks very cool with it's LED lights on the front.

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