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K3

K3 is built on same technologies as every other K Series model, and indeed, the K3 produces the same great sound quality, no matter what type of loudspeaker it is connected to.

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FEATURE

  • Weight and space saving: unequaled, extremely efficient switch mode PSU and Class D design in only one rack space (1U) and 12kg/26.5lbs

  • Power saving: more amp output power from the AC power distro thanks to >90% efficiency, resulting in more overall 

    power from less rack space1)

  • Fewer amplifiers for more speakers: designed for, stable and sounding consistently good with 2Ω loads

  • Outstanding sonic quality per design, including patented output filters

  • Highly integrated: internal state-of-the-art DSP optional

  • Versatile: large number of amp/system/venue parameters can be configured, locked, and monitored

  • Communicative: serial PC interface on board; Ethernet interface including AES3 over Cat-5e optional (KAESOP) for 

    complete remote monitoring and control

SPECIFICATIONS

GENERAL     
Number of channels2    
Output power2 Ω
4 Ω
8 Ω
4 Ω BridgedΩ Bridged
     EIAJ test, 1 kHz, 1% THD2 x 2,800 W2 x 2,600 W2 x 1,4001 x 5,600 W1 x 5,200 W
Max. output voltage165 V(peak)
Max. output current102 A(peak)
AC MAINS POWER     
Power supplyUniversal, regulated switch mode with PFC (Power Factor Correction)
Operating voltage100-240 V ±10%, 50/60 Hz
Power factor cos (φ)>0.95 @ >500 W
Consumption / current draw @ 230 V@ 115 V
    Idle112 W0.57 A1.14 A
    1/8 of max. output power @ 4 Ω*813 W4.0 A8.0 A
    1/4 of max. output power @ 4 Ω*1,625 W7.4 A14.8 A
THERMAL     
Environmental operating temperature0-45° C / 32-113° F 
Thermal dissipationFan, continuously variable speed, temperature controlled, front to rear airflow
    Idle96 kcal/hr382 BTU/hr 
    1/8 of max. output power @ 4 Ω*211 kcal/hr836 BTU/hr 
    1/4 of max. output power @ 4 Ω*326 kcal/hr1,390 BTU/hr 



AUDIO     
Gain (selectable via user menu)26 dB29 dB32 dB35 dB
Input sensitivity @ 8 Ω5.30 V3.75 V2.66 V1.88 V
Max input level27 dBu24 dBu21 dBu18 dBu
Gate-52 dBu-55 dBu-58 dBu-61 dBu
Input impedance10 kΩ balanced   
Frequency response20 Hz - 20 kHz (1 W @ 8 Ω, ±0.5 dB)
THD+N / SMPTE IMD / DIM100 IMD<0.3% from 1 W to full power (typically <0.05%)
S/N ratio>106 dBA (20 Hz - 20 kHz, A weighted)
Crosstalk separation>70 dB @ 1 kHz
Slew rate50 V/µs @ 8 Ω. input filter bypassed
Damping factor>5000 @ 20 - 200 Hz
FRONT PANEL
Indicators7 meter LEDs: 5 x green, 1 x yellow, 1 x red, top yellow and red show alarm with protect description on LCD panel
Controls4 pushbuttons, function depending on user menu
MaintenanceSmartCard reader/writer for firmware updates and preset storage. 
Easily accessible dust filter foam behind two steel covers
REAR PANEL
Audio signal input connectorsAnalog: 2 x balanced Neutrik® XLR female; AES3: use channel 2 XLR
Audio signal output connectorsAnalog: 2 x balanced Neutrik® XLR male
Loudspeaker output connectors2 x Neutrik® Speakon NL4MD
Network data port RS4851 x RJ45 with 2 recessed rotary encoders for ID selection
Aux voltage1 x 2-pin Phoenix P. 3.81mm
AC mainsIEC20A with IEC20A Schuko for EU, IEC20A/American 15A pin plug
Controls1 x link switch, linking analog inputs 1 and 2 
AES3/analog input switch
CONSTRUCTION
DimensionsW 483 mm / 19", H 44.5 mm / 1U, D 380 mm / 15"
Weight8kg / 17.7 lbs
Chassis1 mm / 0.04” steel chassis and removable dust cover 
3 mm / 0.12” steel front panel, screw hole protection, side reinforcement & rear support
DSP SPECIFICATIONS (optional)
A/D converterDual 24bit 96 kHz Tandem® architecture with 127 dBA of dynamic range and THD <0.005% (20 Hz - 20 kHz)
D/A converterDual 24bit 96 kHz Tandem® architecture with 122 dBA of dynamic range and THD <0.003% (20 Hz - 20 kHz)
Memory8 MB (RAM) plus 2 MB (flash for presets)
Presets50 stored locally + 150 stored on a smartcard
Digital audio inputAES3 (glitchless fallback to analog audio selectable)
Delay for time alignmentUp to 4 s on the input section, up to 32 ms per output, sample-by-sample stepping
Crossover filtersButterworth, Linkwitz-Riley, Bessel, Arbitrary Asymmetric, 6dB/oct to 48dB/oct (IIR), linear phase (FIR), hybrid (FIR+IIR)
Output equalizer16 fully parametric filters per channel, IIR: peaking, hi/lo shelving, hi/lo pass eq, band pass, band stop, all pass. Custom FIR up to 384 taps @ 48 or 96 kHz
Input equalizerThree layers (PEQ, raised cosine, shelving), 32 filters each + group filters, up to 256 filters per channel
Cable compensation networkUp to 2 Ω negative/positive wire compensation (Active DampingControl™)
LimiterPower limiter (TruePower™, RMS voltage, RMS current) + Peak Limiter

 

 








 

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