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Presonus - Eris E44 (Active MTM Series Nearfield Monitor) (Single)

The Eris E44 and E66 deliver an expanded and highly accurate frequency response and the widest stereo field available in their class. Their nested Midwoofer-Tweeter-Midwoofer (MTM, also known as “D'Appolito”) configuration offers improved off-axis response and spatial resolution. The result is a more consistent listening experience, smoother frequency response, and an ultra-wide, detailed stereo soundstage.

Conventional 2-way designs can cause significant early reflections from their surrounding environment. The E44 and E66 overcome this by positioning a 1.25-inch, silk dome high-frequency driver between two 4.5-inch (E44) or 6.5-inch (E66) midrange drivers. The two smaller woofers work in parallel to partially contain the dispersion of the tweeter, minimizing phase displacement. The result is incredibly detailed stereo imaging.

Both the E44 and the E66 feature two midrange drivers that cover the same frequency range. The drivers are placed so that their acoustic centers are less than one wavelength apart for any of the frequencies they reproduce; as a result, the combined signal of both drivers propagates forward like a single waveform. This makes the comparatively small midrange drivers in the E44 and E66 behave like a single, larger driver. This mutual coupling provides a highly dynamic output in a compact footprint.

Components and Construction

Dual 4.5", custom-woven Kevlar LF/midrange drivers
1.25", silk-dome HF driver ensures smooth high-frequency performance
Balanced XLR, balanced 1/4" TRS, and unbalanced RCA inputs provide flexibility

User Controls

Acoustic tuning controls help to compensate for room anomalies, providing a consistent frequency response
Continuously variable HF and MF controls (-6 to +6 dB)
Low-cut filter (flat, 80 Hz, 100 Hz)
Acoustic Space settings (Flat, -2 dB, -4 dB) compensates for room placement

Power and Safety

90/140 W Class A/B bi-amplification for an open, clear sound
RF interference, output-current limiting, over-temperature, and subsonic filter protection
Amplifier soft start feature eliminates popping on power-up
Internal power supply with IEC connector

PreSonus E44 Specs

Performance
Frequency Response 55 Hz to 22 kHz
Crossover Frequency 2.9 kHz
LF Amplifier Power 50 W
HF Amplifier Power: 35 W
SPL Peak: 103 dB
LF Driver Size 4.5" (11.43 cm)
HF Driver Size 1.25" (3.17 cm) silk dome
Input Impedance 10 kOhms
User Controls
Volume A-type taper
Control MF: variable (-6 to +6 dB)
HF: variable (-6 to +6 dB)
Low Cut Filters Flat, 80 Hz, 100 Hz
Acoustic Space: flat, -2 dB, -4 dB
General Specifications
Inputs Balanced XLR, balanced 1/4" TRS, unbalanced RCA
Protection RF interference, output-current limiting, over-temperature, turn-on/off transient, subsonic filter, and external mains fuse
Power 100 to 120 V, 50/60 Hz and 220 to 240 V, 50/60 Hz
Cabinet Construction Vinyl-laminated, medium-density fiberboard
Dimensions 14.3 x 7 x 7" (36.5 x 18 x 18 cm)
Weight 11.9 lb (5.4 kg)
Packaging Info
Package Weight 14.65 lb
Box Dimensions (LxWxH) 17.165 x 10.945 x 9.764"

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