BT25/BT50 BASS AMPLIFIER USER’S GUIDE
BT25/BT50 Bass Amplifier Table Of Contents: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .4,5 Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . .6 System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . .7 Technical Specifications . . . . . . . . . . . . . . . .
BT25/BT50 Bass Amplifier Congratulations! You are now the proud owner of the compact but powerful Crate BT25/BT50 Bass Amplifier. The BT25/BT50 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.
BT25/BT50 Bass Amplifier The Front Panel: 1 2 3 4 5 6 7 8 1. INPUT: Use this 1/4” jack to connect your bass to the amplifier by means of a shielded instrument cable. 2. GAIN: Use this control to adjust the amount of distortion for the Distortion channel. As you rotate the control clockwise the amount of distortion increases. 3. SHAPE: Use this control to adjust the tone of the Distortion channel, from a studio “V”-shaped tone to a more “live,” more present sound. 4.
BT25/BT50 9 10 11 Bass Amplifier 12 13 14 15 13. CD INPUT: Use these RCA jacks to connect the line level (or headphones) output of a CD player, tape deck or rhythm machine to the amplifier. The signal level from these jacks is adjusted by the Master control (#12). If the signal from the source connected to these jacks is too strong, use the output level control on the source to adjust the signal to obtain the proper level for a good mix. 14.
BT25/BT50 Bass Amplifier Suggested Starting Settings: Rock: OUT * * Jazz: OUT * * Country: OUT * * Funk: OUT * * Solo Fuzz: IN * * Super Fat Fuzz: IN * 6
BT25/BT50 Bass Amplifier System Block Diagram: OCTAVE LEVEL TUNER FOOT SWITCH A BC D EF G BUFFER EQ INPUT LEVEL LOW LOW HIGH HIGH MID MID CHANNEL SWITCH NOISE GATE SHAPE DISTORTION LEVEL GAIN POWER AMP EXTERNAL SPEAKER MASTER SPEAKER CD INPUT ATTENUATOR HEAD PHONES 7
BT25/BT50 Bass Amplifier BT25/BT50 Technical Specifications: BT25 BT50 Output Power Rating 25W RMS 2% THD, 4Ω, 120 VAC 50W RMS 2% THD, 4Ω, 120 VAC Gain 100dB 104dB Clean Channel 60dB 63dB CD Inputs 33dB 37dB 21dB @ 50Hz 21dB @ 50Hz Lo Mid 23dB @ 150Hz 23dB @ 150Hz Hi Mid 18dB @ 1kHz 18dB @ 1kHz 34dB @ 10kHz 34dB @ 10kHz Signal to Noise Ratio 75dB 75dB Input Impedance 220k ohms 220k ohms Maximum Signal Accepted 15 volts peak-to-peak 15 volts peak-to-peak Input Power Requirem
