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manual abstract
Each product feature is numbered. Refer to the control and rear panel diagrams in this manual to locate the particular features next to their number. Please read this guide carefully to ensure your personal safety as well as the safety of your amplifier. Features · 4-channels (KB2 and KB3) · KB2: biamped 45 watts and 12 watts · KB3: 80 watts external‚ 60 watts internal · balanced line out · effects send/return jack · external speaker capability (KB3 only) ENGLISH quick set-up guide 1. Connect the line cord to the appropriately rated receptacle 2. Be certain that all levels are down or set to the fully counter-clockwise position and set all the EQs flat 3. Set the master level to the 12:00 position 4. Connect left output of your keyboard to the left input of the KB2/KB3 and connect right output of your keyboard to the right input of the KB2/KB3 5. Set the DDT switch to the enable position 6. Set the main/monitor switch to the monitor position 7. Turn on power to the KB2/KB3 8. Adjust the channel level for proper volume 9. Adjust the channel EQ as needed (1) Level Controls the 1/4" jack input level on channels 1 and 2 and the 1/4" jack input and XLR input on channel 3. (2) Low EQ An active tone control (shelving type: +/-15 dB) that varies the low frequency range. Caution: Excessive low frequency boost causes greater power consumption and increases the possibility of speaker damage. (3) Hi EQ An active tone control (shelving type: ± 15 dB) that varies the hi frequency range. (4) Mid EQ An active tone control (peak/notch type: ± 15dB) that varies the mid frequencies. (channel 3) (5) CH4/Monitor Level Controls the input level for channel 4. Controls high-impedance microphones or other high-level sources equipped with a 1/4" phone plug. (6) Headphone Level (KB3 only) This sets the level to the headphone jack on the rear panel. To avoid damage to your hearing‚ make sure to turn the dial fully counter-clockwise before using headphones. Slowly turn the knob clockwise until a comfortable listening level is set. This does not affect the master level. (7) Master Level (KB3 only) This knob sets the overall level for the unit. Make sure the Master level is completely down (full counterclockwise) before powering up the unit. This does not affect the headphone level. (8) Power Switch This two-way rocker switch applies power to the unit when placed in the ON position. front panel 1 5 6 2 3 4 7 8 rear panel Main Line Out (9) This low-noise‚ electronically-balanced XLR connector can be used to route signals to a mixing console‚ recording device‚ etc. Send/Return Jacks Mains (10 & 11) This pair of 1/4" jacks allow the use of various auxiliary units (effects units‚ equalizers‚ etc.) in-line‚ before the power amp section. Headphone Jack (12) This 1/4" jack accepts stereo headphones only. CH4/Monitor Input Jack (13) Use this 1/4" jack to connect to the output of any line-level device. Channel: 3 Low-Impedance Input (14) For use with low-impedance microphones or other line-level sources equipped with a male XLR connector. Channels 3‚ 2 & 1 (15) These 1/4" jacks accept high-impedance microphones or line-level sources equipped with 1.4" phone plugs. External Speaker Jack (16) (KB3 only) This 1/4" jack provides the powered signal from the amplifier. Use this jack to add a second speaker cabinet in parallel. The external minimum speaker load impedance is 8 ohms. IEC connector/detachable line cord (17) This is a standard IEC power connector. An AC mains cord having the appropriate AC plug and ratings for the intended operating voltage is included in the carton. The mains cord should be connected to the amplifier before connecting to a suitable AC outlet. U.S. Domestic AC Mains Cord The mains cord supplied with the unit is heavy-duty‚ 3-conductor type with a conventional 120 VAC plug with ground pin. Never break off the ground pin on any equipment. It is provided for your safety. If the outlet used does not have a ground pin‚ a suitable grounding adapter should be used and the third wire should be properly grounded. 17 12 9 14 10 11 13 15 16 kB2/3 Block diagram 7 Preamp section The following preamp specs are measured @ 1 kHz‚ nominal signal levels are with channel level controls set at 5‚ minimum levels are with channel level controls set at 10. Channel 1 & 2 Inputs: Input Impedance: 100k Nominal Input Level: 6 dBV‚ 2 V RMS Minimum Input Level: -10 dBV‚ 316 mV RMS Channel 3 Input: Low Z Input Impedance: 10k Ohms Nominal Input Level: -15 dBV‚ 178 mV RMS Minimum Input Level: -33 dBV‚ 22 mV RMS High Z Input Impedance: 75k Nominal Input Level: -15 dBV‚ 178 mV RMS Minimum Input Level: -33 dBV‚ 22 mV RMS Channel 4 Input: Input Impedance: 10k Ohms Nominal Input Level: 0 dBV‚ 1 V RMS Minimum Input Level: -25 dBV‚ 56 mV RMS Headphone Output Load Impedance: 8 Ohms or greater Nominal Output: 100 mW RMS Main Line Out Output Impedance: <100 Output Level: 18 dBV POWER AMPLIFIER section Rated Power & Load: 80 W RMS/4 Ohms or 60 W RMS/8 Ohms (1 kHz, 1...
Other models in this manual:Musical Instruments - KB2/KB3 (1.8 mb)