KnTech KNMK-70 User manual

Amplifier
Model: KNMK-70/KNMK-130/KNMK-260/KNMK-360/KNMK-500/KNMK-640

Integrated amplifier
Functional features：
1. 5-way signal input (front panel one-way microphone input, rear panel two-way microphone
input, two-way line input)
2. With 100V, 70V constant voltage output and 4~16 Ω constant resistance output;
3. The volume of each input channel is adjusted independently;
4. Independent adjustment of treble and bass;
5. Mic1 automatic silent tone;
6. Led level display;
7. It has perfect output short-circuit protection and over temperature protection functions;
8. Forced start of cooling fan;
9. It is very suitable for medium and small public places;
Front panel description
1 Power switch 2 bass adjustment 3 treble adjustment
4 Microphone volume 5 auxiliary volume 6 mic1 microphone jack
7 Power indicator 8 level indicator
Note: when the five level lights are always on, it indicates overload distortion, and the relevant
volume knob should be adjusted to normal.

Rear panel description：
1、fuse 2、AC power interface 3、output terminal
4、Line output port (recording or linking other audio equipment) 5 、line input socket 1, 2
6、Microphone socket 2 and 3
Note: only one pair of the four output terminals of the power amplifier should be used.
Silent sound function:
Mic1 has the highest priority, and the signal input from this socket will suppress the input signals
from other sockets.
Installation precautions
1 .do not block the vent of the equipment.
2. Before use, pay attention to check that the power cord is not damaged
3. The power plug and socket should match. If the socket and plug do not match, a suitable
power socket must be connected. People are not allowed To destroy the power plug.
4. The power supply used by the equipment should have sufficient capacity and independent and
reliable grounding wire.
5. When using this machine, pay attention to good ventilation, prevent dust and humidity, and
avoid direct sunlight and strong vibration. The most suitable working environment 5-28
Centigrade, relative humidity <99%, if working for a long time, when the ambient temperature is
too high, it is recommended to take effective cooling measures.
6. The required power supply voltage of this machine is 220v+10%50/60hz. If the power supply
voltage is too high or too low, it should be switched off immediately Check it and power it up
again after troubleshooting
7 when the power is turned on and the signal is input, if you hear a short alarm signal tone, it
indicates that the load is short circuited, you should immediately cut off the power and add To
check. Power up again after troubleshooting
8. Before starting the power amplifier, be sure to turn the volume to the minimum and turn it up
slowly after starting the power amplifier to prevent damage to the loudspeaker. When shutting

down, please Turn the volume to the minimum, and then turn off the power supply to reduce the
total impact on the power grid
.
Performance index
Model no.
KNMK-70
KNMK-130
KNMK-260
KNMK-360
KNMK-500
KNMK-640
Rated output power
70W
130W
260W
360W
500W
640W
Output mode
4-16 ohms(Ω) Constant resistance output
70W 70V(70ohms(Ω);100V(143ohms(Ω)
130W 70V(38ohms(Ω);100V(77ohms(Ω)
260W 70V(19ohms(Ω);100V(38ohms(Ω)
360W 70V(14ohms(Ω);100V(28ohms(Ω)
460W 70V(10.7ohms(Ω);100V(21.7ohms(Ω)
660W 70V(74ohms(Ω):100V(15.1ohms(Ω)
Mic Input
600ohms(Ω)8-12mV out-off-balance
Auxiliary input
10kohms(Ω)150-470mV, out-off-balance
Line output
0.775V(0dBV)
frequency response
60H7_15KHz(+3dB)
Totalharmonicdistortion
THD
<0.5%at1kh, 1/3 rated output power
Signal to noise ratio S/N
aux:85d, mic:>72db
Tonal range
BASS:100Hz(+10dB)，TREBEL:12KHz(+10dB)
Sound suppression
ability
When mic1 is input, MIC2, mic3, AUX1, aux2 signals attenuate by 0-30db
Output adjustment rate
<3db, from no signal static working state to full load working state
Function control
There are five volume adjustments, one high and low tone adjustment, one silent
tone adjustment and one power switch
Cooling mode
Dc12vfan (start when the internal temperature reaches 50 ℃)
indicator light
Power:'power ', level display: 0246810'
Insurance
4 A
4 A
6 A
8 A
10 A
12A
power cord
(3x0.75mm) x1.5m (standard)
supply voltage
AC220V±10%50-60Hz
Power consumption
95W
185W
350W
485W
620W
880W
Machine size
89(H)×483(W)×366(D)mm
Box size
185(H)×520(W)×435(D)mm
Net weight
10.5kg
11.5kg
13.8kg
14.5kg
17.6kg
19.7kg
Gross weight
11.8kg
13.1kg
15.4kg
15.8kg
19.3kg
21.4kg