Crate Amplifiers BT220H دليل المستخدم

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BT220H
BASS AMPLIFIER
USER’S GUIDE

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BT220H Bass Amplifier Table Of Contents: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . .6 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . .7 Technical Specifications . . . . . . . . . . . . . . . .back cover CAUTION PRECAUCION ATT

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BT220H Bass Amplifier Congratulations! You are now the proud owner of the Crate BT220H Bass Amplifier. The BT220H 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. An active ele

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BT220H Bass Amplifier The Front Panel: 1 2 34 5 6 7 8 9 1. ELECTRONIC TUNER: This active electronic tuner is on whenever the amplifier is turned on, allowing you constant, “real- time” tuning. The tuner is fully chromatic – use the flat and sharp indicators until the LED between them illuminates, indi- cating proper tuning. 2. INPUT: Use this 1/4” jack to connect your bass to the amplifier by means of a shielded instrument cable. 3. -15dB/0dB: Use this switch to match the output signal level of

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BT220H Bass Amplifier 10 11 12 13 14 15 16 17 18 19 The Rear Panel: 20. AC LINE CORD (not shown): The grounded power cord should only be plugged into a grounded power outlet 21 that meets all applicable electrical 22 codes and is compatible with the volt- PREAMP POWER AMP OUT IN age, power, and frequency require- BALANCED LINE OUT ments stated on the rear panel. Do not PRE POST attempt to defeat the safety ground EFFECTS LOOP connection. 21. PREAMPOUT:Use this jack to 23 send a line level signal

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BT220H Bass Amplifier Suggested Starting Settings: Rock: OUT ** Jazz: OUT ** Country: OUT ** Funk: OUT ** Solo Fuzz: IN ** Super Fat Fuzz: IN * 6

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BT220H Bass Amplifier System Block Diagram: OCTAVE LEVEL TUNER FOOT SWITCHING A BC D EF G SWITCH CIRCUITRY BUFFER EQ INPUT CHANNEL LEVEL -15dB PAD LOW LOW HIGH HIGH SWITCH MID MID NOISE GATE SHAPE DISTORTION LEVEL GAIN EFFECTS LOOP SEND RETURN EFFECTS BLEND MUTE MASTER CD INPUT LIMIT PRE BALANCED LINE OUT EXTERNAL POST SPEAKER BALANCED POWER LINE OUT GND/ AMP VOLUME GND EXTERNAL LIFT SPEAKER POWER AMP IN ATTENUATOR HEAD PREAMP PHONES OUT 7

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BT220H Bass Amplifier BT220H Technical Specifications: Output Power Rating 220W RMS 2% THD @ 4Ω , 120 VAC Gain Distortion Channel 106dB Clean Channel 61dB CD Inputs 36dB Tone Range Low 20dB @ 50Hz Lo Mid 24dB @ 150Hz Hi Mid 18dB @ 1kHz High 34dB @ 10kHz Signal to Noise Ratio 65dB below full power, tones flat, gain and level @ “10” Input Impedance 220k ohms Maximum Input Signal Level Accepted 15 volts peak-to-peak Balanced Line Out Jack 2 volts peak-to-peak @ full rated power w/600 ohm load Input