Casio CTK-230 Sep. 2003 manual Specifications

		SPECIFICATIONS
GENERAL
Keyboard:	49 standard-size keys, 4 octaves
Tones:	100
Polyphony:	12 notes maximum (6 for certain tones)
Auto Accompaniment
Rhythm Patterns:	100
Tempo:	Variable (236 steps, = 20 to 255)
Chords:	2 fingering methods (CASIO CHORD, FINGERED)
Rhythm Controller:	START/STOP, SYNCHRO/FILL-IN
Accomp Volume:	0 to 9 (10 steps)
Song Bank
Tunes:	50
Controllers:	PLAY/PAUSE, STOP, MELODY ON/OFF
Display
Name display:	TONE, RHYTHM, SONG BANK name/number, keyboard setting names/
	values
Tempo:	Tempo value, metronome, synchro standby, beat indicator, volume set-
	ting
Chord:	Chord name
Song Bank Status:	PLAY, PAUSE, MELODY ON/OFF
Other Functions
Transpose:	12 steps (–6 semitones to +5 semitones)
Tuning:	Variable (A4 = approximately 440Hz ± 50 cents)
Volume:	0 to 9 (10 steps)
Terminals
Phones/Output Terminal:	Stereo standard jack (Output is monaural.)
	Output Impedance: 78Ω
	Output Voltage: 3V (RMS) MAX
Power Supply Terminal:	9V DC
Power Supply:	Dual power supply system
Batteries:	6 AA-size batteries
Battery Life:	Approximately 6 hours continuous operation on alkaline batteries
	Approximately 3 hours continuous operation on manganese batteries
AC Adaptor:	AD-5
Auto Power Off:	Turns power off approximately 6 minutes after last operation.
	Enabled under battery power only, can be disabled manually.
Speaker Output:	ø 10cm × 2 (1.6W + 1.6W)
Power Consumption:	9V	6.5W
Dimensions:	87.5 ×	30.0 × 10.0 cm (34 1/2 × 11 13/16 × 3 15/16 inch)
Weight:	Approximately 3.2 kg (7.1 lbs) (without batteries)

ELECTRICAL

Current drain with 9 V DC:

No sound output	79 mA ± 20 %
Maximum volume	426 mA ± 20 %
with 12 keys C3 to G4 pressed in Synth-Lead 1
Volume: 9 (Max.)
Phone output level (Vrms with 32 Ω load each channel):	200 mV ± 20 %
with key C5 pressed in Synth-Lead 1
Speaker output level (Vrms with 4 Ω load each channel):	640 mV ± 20 %
with key E2 pressed in Synth-Lead 1
Output level (Vrms with 47 KΩ load each channel):	675 mV ± 20 %
with key C5 pressed in Synth-Lead 1

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