Transcript
Near-Field Monitors
O 300 O 300 D Active Near-Field Monitors
When developing
the O 300 product category, the goal was to achieve the most accurate, uncolored sound, combined with ideally shaped waveguides, in a compact size. Complex computer simulations and extensive listening tests were conducted. The result is unique in its class: an unbeatably neutral and even sound stage. A precise bass response, perfect dispersion pattern, and a stunningly real reproduction with remarkable imaging and depth leave nothing to be desired. The O 300 is available with an analogue input (O 300) or with additional digital inputs (O 300 D).
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Maximally compact driver layout
Elliptical waveguide for very
Electronically balanced
Room compensation EQ:
wide horizontal and narrow vertical dispersion patterns
analog input
bass, mid, treble
Frequency response
THD at 95 dB SPL at 1 m
total
2nd
3rd
dB 100
dB – 10 – 20
Design: silver-colored
90
– 30 – 40
80
– 50 – 60
70
O 300
– 70
High-quality digital input
Direct input for external
integrated as standard
Pro C 28 digital FIR controller
– 80
60 0.05
0.2
0.5
1
2
5
10 kHz
0.05
Group delay
0.2
0.5
Max. SPL at 1 m at 1 %
1
2
and 3 %
5
kHz
THD
ms
O 300 / O 300 D
0 90
3-way system design Q Q Q
Q Q Q Q Q Q Q Q Q
– 20
The most important part of the frequency spectrum is reproduced by a separate midrange driver Extremely low-distortion reproduction Exceptionally neutral sound stage from 35 Hz to 20 kHz No standing waves in the enclosure and no bass driver cone break-up
Unconventional enclosure concept
Very compact enclosure constructed using ideal materials with excellent self-damping properties Structural resonances avoided using LRIM (Low Resonance Integral Molding) Very accurate bass reproduction due to sealed enclosure Acoustic centers of loudspeaker positioned on one plane Homogenous front baffle with no diffraction or acoustical discontinuities Wider effective listening area for main monitor when horizontally installed Modern-looking design with optional baffle cover/grill Extensive accessories allow for a multitude of installation possibilities Magnetically shielded for use next to CRT screens
0.05
0.2
0.5
1
2
Q Q
Q Q Q Q Q
Integrated electronic limiter for each driver Active three-way crossover with 24 dB/oct. slopes Transformer balanced input equipped with special distortion reduction crossover function Power and overload/limiter-display integrated into the front panel K+H logo Controls adapt the monitor’s response to compensate for the room location
Q Q
Additional 24-bit and 32-96 kHz digital input for AES/EBU, AES 3id and S/P-DIF Input connector for external Pro C 28 FIR digital controller Transformer balanced analog input
0.2
0.5
1
2
5
kHz
70
Cumulative spectral decay dB 100
0 –5 – 10 – 15 – 20 – 25 0,0
90 80 +5 0 –5 – 10 – 15 – 20 – 25
70 60 0.05
0.2
0.5
1
2
5
10 kHz
Horizontal directivity
125
250
500
1,000 2,000 f[Hz] 0 to 3
2.3 ms 4.5 ms 6.8 ms
100 Hz
1,000 Hz
10 kHz
9.1 ms
Vertical directivity
O 300 D Q
0.05
Acoustical controls EQ: bass, mid, high
Wide horizontal directivity gives increased freedom of movement along the mixing console Narrow vertical directivity reduces the effect of early reflections off the console surface Perfect directivity pattern leads to a smooth power response
Advanced Electronics
80
5 10 kHz
Functional waveguide Q
110 100
O 300 / O 300 D Active Studio Monitors Q
dB
20
O 300 D
– 90
4,000
8,000
–3 to 0
16,000
90
90
60
60
30
30
0 degree
0 degree
– 30
– 30
– 60
– 60
– 90
– 6 to – 3
125
– 9 to – 6
250
– 12 to – 9
500
1,000 2,000 f[Hz] – 15 to – 12
4,000
8,000
– 18 to – 15
16,000
– 90
– 21 to – 18
Decrease of SPL (dB)
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