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Resumen del manual
5. ULTRA HIGH: Use this switch to boost the high frequencies. The adjacent LED illuminates when the Ultra High is active. 6. ULTRA LOW: Use this switch to boost the low frequencies. The adjacent LED illuminates when the Ultra Low is active. 7. BASS: Use this control to adjust the low frequency output of the amplifier. 8. ULTRA MID: Use this control to adjust the midrange frequency output of the amplifier. 9. TREBLE: Use this control to adjust the high frequency output of the amplifier. 10. FX BLEND: Use this control to adjust the mix between the direct (dry) signal and the effects (wet) when the effects loop (#24-25) is used. Full counterclockwise results in all direct signal (no effect) and full clockwise gives all effect and no direct signal. The clockwise position is equivalent to a series effects loop and should be used with such devices as limiters and equalizers. 11. PRESETS: Use these switches to select one of four presets for the amplifier. Complete information on presets and programs is on page 7. 12. MASTER: Use this control to adjust the overall output level of the amplifier. 13. LIMIT DEFEAT: The B500DR employs a limiter circuit to prevent overdrive distortion at or near full power. This switch, when depressed, disables the internal limiter circuit. The adjacent LED illuminates when the limiter circuit is operating. 14. POWER: Use this switch to turn the amplifier on (top of the switch depressed) and off (bottom of the switch depressed). 1 2 3 4 5 6 7 8 9 10 11 12 13 14 B500DR Programmable Bass Amplifier B500DR Programmable Bass Amplifier The Rear Panel: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. 15 16 15. CIRCUIT BREAKER: The B500DR employs an AC line circuit breaker to help protect against damage due to excessive current demands. If the amplifier stops working, check the circuit breaker. If it has opened, the button will be protruding and showing a contrasting color. You can reset the circuit breaker by pushing it in until it latches. The breaker must cool down for a short time before the button will latch. If the circuit breaker opens repeatedly, have the amplifier checked by a qualified service person. 16. AC LINE IN: Firmly insert the supplied AC power cord into this socket until it is fully seated. This grounded power cord is to be plugged into a grounded power outlet, wired to current electric codes and compatible with voltage, power, and frequency requirements stated on the rear panel. Do no attempt to defeat the safety ground connection. 17. SPEAKER OUTPUTS: The 1/4” jacks offer a convenient method of connecting to speaker cabinets using cables terminated with 1/4” plugs. However, when using the amplifier at or near its full output power, using the Speakon® jack is recommended. 18. FOOTSWITCH: Use this jack to connect the Ampeg AFP4BD four button footswitch to the amplifier for remote selection of the four presets. 19. BALANCED LINE OUT: Use this jack to send a pre-Master, line level signal to a house mixing board, recording console or external amplifier(s). Pin 2 = positive (+), pin 3 = negative (-). 7 43565 15531 9 B500DR #98689 (21) SERIAL# BMCDN20083 Line: 120V Freq: 60 Pwr: XXVA 17 18 19 20 21 222324 25 20. LEVEL: Use this control to adjust the level of the signal at the Balanced Line Out jack (#19). 21. POWER AMP INPUT: Use this jack to connect the output of an external preamp directly into the power amp circuitry of the B500DR by means of a shielded signal cable. The preamp signal is disengaged when this jack is used. 22. PREAMP OUTPUT: Use this jack to send a preamp signal to an external power amplifier, mixing board, external effects, etc. by means of a shielded instrument cable. Using this output does not break the connection to the internal power amplifier. 23. PRE/POST: This switch, when depressed, sends a post-EQ preamp signal to the Balanced Line Out jack (#19). The signal at the balanced Line Out jack (#19) is pre-EQ when this switch is in the out position. 24. EFFECTS LOOP RETURN: Use this jack to connect the B500DR to the output of an external effects device by means of a shielded signal cable. 27. EFFECTS LOOP SEND: Use this jack to connect the B500DR to the input of an external effects device by means of a shielded signal cable. OFF OFF OFF ON OFF OFF ON ON 6 Some Suggested Settings ROCK: JAZZ: COUNTRY: FUNK “POPPING:” Rack Mounting When mounting the amplifier into a rack, the four bottom feet should be removed to maintain the two rack space height of the amplifier. Be sure to keep the feet and their attachment bolts for future use. If the feet are reinstalled, never use screws which will protrude farther into the amplifier than the original hardware. The rack must be a high quality enclosure capable of securely supporting the weight of th...