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Active MTM Series Nearfield Monitor

  • Presonus ERIS 66 2
£329.00 Inc VAT
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Quick Overview

The Presonus ERIS 66 is an Active MTM Series Nearfield Monitor that features Dual 6.5", custom-woven Kevlar LF/midrange drivers

  • Description
  • Additional Information
  • Alternative Products

Presonus ERIS E66 Packages

Presonus ERIS E66 Product Description

The Eris E66 Active MTM Series Nearfield Monitor from PreSonus delivers an expanded and highly accurate frequency response and a wide stereo field. Its nested Midwoofer-Tweeter-Midwoofer (MTM) 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 E66 overcomes this by positioning a 1.25", silk dome high-frequency driver between two 6.5" midrange drivers. The two smaller woofers work in parallel to partially contain the dispersion of the tweeter, minimizing phase displacement. The result is detailed stereo imaging.

The E66 features 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. This results in the combined signal of both drivers propagating forward like a single waveform. This makes the comparatively small midrange drivers in the E66 behave like a single, larger driver. This mutual coupling provides a highly dynamic output in a compact footprint.

Sound waves radiating from the two components in a conventional speaker design can interfere with one another, creating peaks at some frequencies and dips at others, and these will vary depending on where the listener is relative to the speaker. In an MTM configuration, component interference, and the sonic inconsistencies that go with it, are minimized. This affords listeners an ultra-wide sweet spot and a more consistent listening experience on- and off-axis.


Components and Construction
  • Dual 6.5", 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

Technical Specifications

  • Frequency Response 45 Hz to 22 kHz
  • Crossover Frequency 2.4 kHz
  • LF Amplifier Power 80 W
  • HF Amplifier Power: 65 W
  • SPL Peak: 106 dB
  • LF Driver Size 6.5" (16.51 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 18.1 x 8.5 x 9.8" (46 x 21.5 x 25 cm)
  • Weight 23.4 lb (10.6 kg)

Presonus ERIS E66 Additional Information

Brand Presonus
Condition New
Colour Black
Sold As Single
Speaker Type Active
Speaker Configuration 3-Way
LF Driver Size 6.5"
LF Amplifier 80W
LF Driver Material Kevlar
MF Driver Size 6.5"
MF Amplifier 80W
MF Driver Material Kevlar
HF Driver Size 1.25"
HF Amplifier 65W
HF Driver Material Dome
Total Power 225W
Min Frequency Response (Hz) 45 Hz
Max Frequency Response (kHz) 22 kHz
Max SPL 106 dB
Crossover Frequency 2.4 kHz
Port Configuration Front Ported
Monitor Features Rear Panel Volume Control
Level Control Bass, Mid, Treble
Input Connectivity XLR, 1/4" Jack, RCA / Phono

Presonus ERIS E66 Alternative Products

Presonus ERIS E66 (Pair)

Presonus ERIS E66 (Pair)

£658.00 Inc VAT