BT220 BASS AMPLIFIER USER’S GUIDE
BT220 Bass Amplifier Table Of Contents: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . .6 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . .7 Technical Specifications . . . . . . . . . . . . . . . .
BT220 Bass Amplifier Congratulations! You are now the proud owner of the Crate BT220 Bass Amplifier. The BT220 features two different channels: a distortion channel, featuring Crate’s exclusive Shape control for quick and easy access to the tone you need, and a clean channel with a four-band rotary EQ. Another unique and valuable feature of this amplifier is the Octave control. This feature electronically creates a second signal that is one octave lower than the original signal.
BT220 Bass Amplifier The Front Panel: 1 2 3 4 5 6 7 8 9 10 1. INPUT: Use this 1/4” jack to connect your bass to the amplifier by means of a shielded instrument cable. 2. -15dB/0dB: Use this switch to match the output signal level of your instrument to the amplifier. If your instrument has standard pickups, setting the switch to the 0dB position (switch in the out position) should yield the best results.
BT220 Bass Amplifier The Front Panel: 11 12 13 14 15 16 17 18 17. HEADPHONES: Use this jack to listen to the amplifier through a pair of stereo headphones. The internal speaker is disconnected when the headphones jack is used. To avoid possible damage to your hearing, do not use headphones for extended periods of time at extremely loud listening levels. 18. POWER: Use this switch to turn the amplifier on and off. The adjacent LED illuminates when the amplifier is turned on. 19.
BT220 Bass Amplifier Suggested Starting Settings: Rock: OUT * * Jazz: OUT * * Country: OUT * * Funk: OUT * * Solo Fuzz: IN * * Super Fat Fuzz: IN * 6
BT220 Bass Amplifier System Block Diagram: OCTAVE TUNER LEVEL FOOT SWITCH A BC D EF G SWITCHING CIRCUITRY BUFFER EQ INPUT LEVEL -15dB PAD LOW LOW HIGH HIGH MID MID CHANNEL SWITCH NOISE GATE SHAPE DISTORTION LEVEL GAIN EFFECTS LOOP RETURN SEND EFFECTS BLEND MUTE MASTER CD INPUT GND/ GND LIFT LIMIT PRE BALANCED LINE OUT BALANCED LINE OUT VOLUME SPEAKER POST POWER AMP EXTERNAL SPEAKER ATTENUATOR HEAD PHONES 7
BT220 Bass Amplifier BT220 Technical Specifications: Output Power Rating Gain Distortion Channel Clean Channel CD Inputs Tone Range Low Lo Mid Hi Mid High Signal to Noise Ratio Input Impedance Maximum Input Signal Level Accepted Balanced Line Out Jack Internal Speaker Size Type Magnet Voice Coil RMS Rating Impedance Input Power Requirements Size Weight 220W RMS 2% THD, 4Ω, 120 VAC 103dB 61dB 33dB 20dB @ 50Hz 24dB @ 150Hz 18dB @ 1kHz 32dB @ 10kHz 65dB below full power, tones flat, gain and level @ “10” 2
