Presonus ERIS E66 Studio Monitors
Smooth and Wide 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.
Stereophonic. 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.
Seeing Double. 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.
Consistent Listening. 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.
Transparent and Cohesive Sound. The E44 and E66 utilize 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 You. Many 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 E44 and E66 are able to perform optimally in both orientations. So, like all Eris speakers, the E44 and E66 let you position your speaker the way that works best for you.
You’re in Control. Today’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 Connections With 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 E44 and E66 provide 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 Defined Like all PreSonus studio monitors, the Eris E44 and E66 offer 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 E44 and E66 set a new standard for affordable studio monitors. Hear them at your favorite PreSonus dealer.
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Eris E44
Eris E66
Inputs
1- Balanced XLR
1- Balanced XLR
1- Balanced ¼” TRS
1- Balanced ¼” TRS
1- Unbalanced RCA
1- Unbalanced RCA
Performance
Frequency Response
55 Hz – 22 kHz
45 Hz – 22 kHz
Crossover Frequency
2.9 kHz
2.4 kHz
LF Amplifier Power
50W
80W
HF Amplifier Power
35W
65W
Peak SPL (@ 1 meter)
103 dB
106 dB
LF Driver
Dual 4.5” Kevlar®
Dual 6.5” Kevlar®
HF Driver
1.25” silk dome
1.25” silk dome
Input Impedance
10 kΩ
10 kΩ
User Controls
Volume Range
A-type taper
A-type taper
MF Control
Variable (-6 to +6 dB)
Variable (-6 to +6 dB)
HF Control
Variable (-6 to +6 dB)
Variable (-6 to +6 dB)
Low Cut
Flat, 80 Hz, 100 Hz
Flat, 80 Hz, 100 Hz
Acoustic Space
Flat, -2 dB, -4 dB
Flat, -2 dB, -4 dB
Protection
RF interference
RF interference
Output-current limiting
Output-current limiting
Over-temperature
Over-temperature
Turn-on/off transient
Turn-on/off transient
Subsonic filter
Subsonic filter
External mains fuse
External mains fuse
Power
100-120V ~ 50/60 Hz
100-120V ~ 50/60 Hz
220-240V ~ 50/60 Hz
220-240V ~ 50/60 Hz
Cabinet
Vinyl-laminated, medium-density fiberboard
Vinyl-laminated, medium-density fiberboard
Physical
Width
14.3” (365 mm)
18.1” (460 mm)
Depth
7” (180 mm)
8.5” (215 mm)
Height
7” (180 mm)
9.8” (250 mm)
Weight
11.9 lbs (5.4 kg)
23.4 lbs (10.6 kg)