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StereophonicConventional 2-way designs can cause significant early reflections from their surrounding environment. The E66 overcomes this by positioning a 1.25-inch, silk dome high-frequency driver between two 6.5-inch 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.
Seeing DoubleThe 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; as a result, the combined signal of both drivers propagates 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.
Consistent ListeningSound 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.
Transparent and Cohesive SoundThe E66 utilizes custom-woven Kevlar® low-frequency drivers. This provides a more constant dispersion pattern throughout the frequency range, resulting in less time-smeared audio and cleaner overall sound. The weave and nature of the dual Kevlar woofers also helps break up reflected energy, so fewer delayed reflections reach the listener’s ear. In conjunction with the MTM configuration, this works to create a transparent, cohesive sound.
Horizontal or Vertical—It’s Up to YouMany MTM configurations must be arrayed vertically, rather than horizontally, because vertical placement provides a clear, interference-free midrange and treble reproduction to either side, expanding the sweet spot. By bringing the midrange drivers closer together and raising the high-frequency driver, the E66 is able to perform optimally in both orientations. So, like all Eris speakers, the E66 lets you position your speaker the way that works best for you.
You’re in ControlToday’s music producers deal with a wide variety of musical genres and often work in more than one location. That’s why Eris-series studio monitors offer extensive acoustic tuning controls. The three-position Acoustic Space switch helps to compensate for the boundary bass boost that can occur when a monitor is placed in a corner or near a wall. High and Mid controls help to further mitigate room anomalies. A Low Cutoff filter makes it easy to integrate a Temblor subwoofer into your monitor setup.
Making ConnectionsWith three different types of audio inputs, it’s easy to feed audio to your Eris monitors from a mixer, an interface, a media player, or almost any other line-level source. The Eris E66 provides balanced XLR, balanced ¼” TRS, and unbalanced RCA line-level inputs. With this selection, you’ll have no problem hooking your Eris speakers up with virtually any line-level source.
Accuracy DefinedLike all PreSonus studio monitors, the Eris E66 offers consistent, accurate listening. The ultra-wide stereo image afforded by their MTM design, makes them an ideal solution for any one who requires best-in-class spatial resolution. Like the rest of the Eris studio monitors, the E66 sets a new standard for affordable studio monitors.
Components and construction
- Dual 6.5-inch, custom-woven Kevlar® LF/midrange drivers produce dynamic, size-defying bass output
- 25-inch, silk-dome HF driver ensures smooth high-frequency performance that is never fatiguing to the ears
- Balanced XLR, balanced ¼-inch TRS, and unbalanced RCA inputs provide flexibility for seamless integration into any environment
- Acoustic tuning controls help to compensate for room anomalies, providing a consistent frequency response customized for your mix environment
- 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
- 90W/140W 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
- 1 – Balanced XLR
- 1 – Balanced 1/4? TRS
- 1 – Unbalanced RCA
- Frequency Response 45 Hz – 22 kHz
- Crossover Frequency 2.4 kHz
- LF Amplifier Power 80W
- HF Amplifier Power 65W
- Peak SPL (@ 1 meter) 106 dB
- LF Driver Dual 6.5” Kevlar®
- HF Driver 1.25” silk dome
- Input Impedance 10 k?
- Volume Range A-type taper
- MF Control Variable (-6 to +6 dB)
- HF Control Variable (-6 to +6 dB)
- Low Cut Flat, 80 Hz, 100 Hz
- Acoustic Space Flat, -2 dB, -4 dB
- RF interference
- Output-current limiting
- Turn-on/off transient
- Subsonic filter
- External mains fuse
- 100-120V ?50/60 Hz
- 220-240V ?50/60 Hz
- Vinyl-laminated, medium-density fiberboard
- Width 18.1” (460 mm)
- Depth 8.5” (215 mm)
- Height 9.8” (250 mm)
- Weight 23.4 lbs (10.6 kg)
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