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©1999 SLM Electronics, Inc. • A Division of St. Louis Music, Inc.
1400 Ferguson Avenue • St. Louis, MO 63133
47-046-01 • 02/99
KX-220 Stereo Keyboard Amplifier
Technical Specifications
Due to ongoing product development and improvement, the specifications
contained herein are subject to change without notice.
Output Power Rating 160 watts RMS minimum @5% THD @ 4 ohm internal speaker
220 watts RMS with 4 ohm extension speaker
Maximum Signal Accepted Channels 1,2,&3 Right/mono / Left: 6 volts peak to peak
Channel 4 Instrument: 28 volts peak to peak; Microphone: 4 volts peak to peak
Effects Return Right/mono: 27 volts peak to peak; Left: 27 volts peak to peak
Nominal Input Impedance Channels 1,2,&3 Right/mono / Left: 22k ohm
Channel 4 Instrument: 220k ohm; Microphone: 600 ohm
Gain Channels 1,2,&3 Right/mono / Left: 30dB
Channel 4 Instrument: 37dB; Microphone: 64dB
Power Amp 36dB
Channel 4 EQ Low: ±10dB @ 50Hz; High: ±10dB @ 10kHz
Master EQ ±12dB @ 40Hz, 100Hz, 225Hz, 625Hz, 1.6kHz, 4kHz, 8kHz, 16kHz
Line Out/Line In Levels 1 volt RMS typical
Input Power Requirements 120 VAC, 60Hz, 205VA
100/110 VAC, 50/60Hz, 205VA
230 VAC, 50/60Hz, 205VA
Limiter Range 20dB, maximum distortion 1%
Speaker Specifications Low Frequency 15” Crate Custom Design, 2.5” voice coil, 56 oz. magnet
High Frequency 4”x4” Bullet Horn, 1” voice coil, replaceable phenolic diaphragm,
8 oz. magnet
Size and Weight 20.5” H* x 20.5” W x 17.5” D; 73 lbs (*add 1.5” for casters)