Kempton KA 1200 User manual

Featuring robust power,
efficient operation, impressi-
ve specs, and excellent cost per
watt performance: Kempton’s
KA amplifiers are the perfect
power mates for PW and GT
sound reinforcement speaker
systems. Used in 4-ohm bridged
applications the KA 2000 deli-
vers 2000W, the KA 1200
1200W and the KA 800 800W.
The KA Amplifier Series is the
result of many hours of testing
and performance involving
Kempton’s tech staff and users.
The results are a sophisticated
power amp circuit design featu-
ring high power, superb quality,
reliability and stability to provide
the highest possible sound
performance
Amps with Class
KA 800 and 1200 are feature Class AB design,
while KA 2000 is a Class H (2 steps) amp design.
The KA Series power amps deliver high fidelity
sound quality, high slew rate, wide full range fre-
quency response and extremely low noise. These are
the references of Kempton’s KA Power Amplifiers.
Features & Controls
Sophisticated protection circuits prevent improper
tampering. A variable low noise, high speed fan pro-
vides for improved heat dissipation and to prevent
thermal shutdowns. Balanced XLR and Jack input
connectors. Professional 4-pin speakon and binding
posts outputs. Stereo-Parallel-Bridge modes via
switch. Selectable clipping control / limiter function
switch. Selectable built-in 30Hz low pass filter to
protect speaker systems from damage caused by
subsonic frequencies. LED indicators for the output
balance, as well as LED status indicators of signal
(SIG) and clipping (CLIP). 2-unit 19” rack space desi-
gn for universal rack mount installations.
Model KA 800 KA 1200 KA 2000
Power Specifications
STEREO MODE Wrms 8ohm 200 / 250 300 / 350 560 / 650
(Both channel driven - 1%thd) 4ohm 320 / 400 500 / 600 840 / 1000
Continuous/Impulsive 2ohm 400 / 450 650 / 750 1100 / 1250
BRIDGE MODE Wrms 8ohm 600 / 720 940 / 1100 1500 / 1750
Continuous/Impulsive 4ohm 750 / 800 1200 / 1350 1950 / 2200
Electrical Specifications
Input Sensitivity Vrms 1,3 (4,5dbu) 1,3 (4,5dbu) 1,3 (4,5dbu)
Voltage Gain dB 30 32 34,5
Input Impedance ohm 20K Balanced 20K Balanced 20K Balanced
Frequency Response @ -1db Hz 20 - 40K 20 - 40K 20 - 40K
THD distorsion (50% Pmax) % 0,01 0,01 0,01
S/N Ratio (A weighted) db >100 >100 >100
consumption VA 1200 1800 3000
General Specifications
Class AB AB H, 2step
Protections Short circuit, Thermal
Controls FRONT: AC switch, Input levels
REAR: stereo/parallel/bridge selector,
30Hz Hp filter, clip ON/Off
Indicators SIGNAL, CLIP, POWER led
Connectors IN: XLR and 6.3mm-Jack
OUT: binding posts and NL4 speakons
Power Supply Available for 110-120VAC or 220-240VAC, 50/60Hz
Cooling Variable speed FAN
Dimensions (WxDxH) mm 438x400x88,8 438x400x88,8 438x400x88,8
inch 17,24x15,74x3,49 17,24x15,74x3,49 17,24x15,74x3,49
Weight Kg 14,4 16,5 19
lb 31,74 36,37 41,88
APPLICATIONS
Amplification for Live Sound Reinforcement Speaker
Systems in Clubs, Discos, Piano Bars, Conference Halls,
Houses of Worship, Sports Arenas, Schools, Theatres,
Mobile D.J. use, Recording Studio Monitors, Foreground Music
Reproduction, etc.
POWER AMPLIFIERS
KA
KA 800
KA 1200
KA 2000