Studio Monitors Presonus E4.5

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Features
Components and construction
4.5-inch (114 mm) woven composite low-frequency transducer
1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer
Rear-firing acoustic port for superior bass-frequency reproduction
Optimized, resonance-suppressing internal bracing
User controls
High- and low-frequency tuning controls
Front-panel Volume control for speakers and headphone amplifier
Power and safety
50 watt (25W/side), Class AB bi-amplification
RF interference, output current limiting, over-temperature, transient, and subsonic protection
Amplifier “soft start” feature eliminates popping on power-up
Internal power supply with IEC connector
Power switch with on/off LED
Inputs and outputs
Balanced ¼-inch TRS, unbalanced 1/8-inch stereo, and RCA inputs
Integrated stereo headphone amplifier with front-panel 1/8-inch output

Technical Specifications
Inputs
 
 
1- Stereo 1/8"
 
2- Balanced ¼” TRS
 
2- Unbalanced RCA
Performance
 
Frequency Response
70 Hz - 20 kHz
Crossover Frequency
2.8 kHz
LF Amplifier Power
25W/speaker
HF Amplifier Power
(not biamped)
Peak SPL (@ 1 meter)
100 dB
LF Driver
4.5"
HF Driver
1” silk dome
Input Impedance
10 kΩ
User Controls
 
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
Protection
 
 
RF interference
 
Output-current limiting
 
Over-temperature
 
Turn-on/off transient
 
Subsonic filter
 
External mains fuse
Power
 
 
100-120V ~50/60 Hz or 220-240V ~50/60 Hz
Cabinet
 
 
Vinyl-laminated, medium-density fiberboard
Physical
 
Width
6.42" (163 mm)
Depth
7.09" (180 mm)
Height
9.45" (241 mm)
Weight
13 lb. (5.9 kg)